CY7C65621-56LTXC_技术文档

CY7C65621/31

EZ-USB HX2LP Lite™

Low Power USB 2.0 Hub Controller Family

Features

■ USB 2.0 hub controller

■ In-system EEPROM programming

■ Configurable with external SPI EEPROM:

❐ Vendor ID, Product ID, Device ID (VID/PID/DID)

❐ Number of active ports

❐ Number of removable ports

❐ Maximum power setting for high speed and full speed

❐ Hub controller power setting

❐ Power on timer

❐ Overcurrent detection mode

❐ Enabled and disabled overcurrent timer

❐ Overcurrent pin polarity

■ Compliant with the USB 2.0 specification

■ USB-IF certified: TID# 30000009

■ Windows Hardware Quality Lab (WHQL) compliant

■ Up to four downstream ports supported

■ Supports bus powered and self powered modes

■ Single transaction translator (TT)

■ Bus power configurations

■ Fit, form, and function compatible with CY7C65640 and

❐ Indicator pin polarity

CY7C65640A (TetraHub™)

❐ Compound device

❐ Enable full speed only

❐ Disable port indicators

❐ Ganged power switching

■ Space saving 56-pin QFN

■ Single power supply requirement

❐ Internal regulator for reduced cost

■ Integrated upstream pull up resistor

❐ Self and bus powered compatibility

❐ Fully configurable string descriptors for multiple language

support

■ Integrated pull down resistors for all downstream ports

■ Integrated upstream and downstream termination resistors

■ Integrated port status indicator control

■ 24 MHz external crystal (integrated phase locked loop (PLL))

Block Diagram CY7C65631

D+

D -

High-Speed

USB Control Logic

USB 2.0 PHY

PLL

Serial

Interface

Engine

24 MHz

Crystal

SPI_SCK

SPI_SD

SPI Communication

Block

SPI_CS

USB Upstream Port

Hub Repeater

Transaction Translator

TT RAM

Routing Logic

USB Downstream Port 1

USB Downstream Port 2

USB Downstream Port 3

USB Downstream Port 4

USB 2.0

PHY

Port

Status

Port Power

Control

USB 2.0 Port Power

PHY

Control

Port

Status

USB 2.0 Port Power

PHY

Control

Port

Status

USB 2.0 Port Power

PHY

Control

Port

Status

D+ D- PWR#[4]

LED

D+ D- PWR#[3]

LED

D+ D- PWR#[1]

OVR#[1]

LED D+ D- PWR#[2]

LED

OVR#[3]

OVR#[2]

OVR#[4]

Cypress Semiconductor Corporation

Document #: 001-52934 Rev. *C

•

198 Champion Court

•

San Jose, CA 95134-1709

•408-943-2600

Revised February 23, 2011

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CY7C65621/31

Block Diagram CY7C65621

D+

D -

High-Speed

USB Control Logic

USB 2.0 PHY

PLL

Serial

Interface

Engine

24 MHz

Crystal

SPI_SCK

SPI_SD

SPI_CS

SPI Communication

Block

USB Upstream Port

Transaction Translator (X1)

TT RAM

Hub Repeater

Routing Logic

USB Downstream Port 1

USB Downstream Port 2

USB 2.0

PHY

Port

Status

Port Power

Control

USB 2.0 Port Power

PHY Control

Port

Status

D+ D- PWR#[1]

LED

D+ D- PWR#[2]

OVR#[2]

LED

OVR#[1]

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CY7C65621/31

Contents

Introduction .........................................................................4

USB Serial Interface Engine ..........................................4

Hub Repeater ................................................................4

Transaction Translator ..................................................4

Supported USB Requests ................................................17

Device Class Commands ............................................17

Hub Class Commands ................................................18

Upstream USB Connection ..............................................20

Downstream USB Connections .......................................20

LED Connections ..............................................................20

System Block Diagram .....................................................21

Applications ........................................................................4

Functional Overview ..........................................................4

System Initialization .......................................................4

Enumeration ..................................................................4

Downstream Ports .........................................................5

Upstream Port ...............................................................5

Power Switching ............................................................5

Overcurrent Detection ...................................................5

Port Indicators ...............................................................5

Electrical Characteristics .................................................22

Absolute Maximum Ratings .........................................22

Operating Conditions ...................................................22

DC Electrical Characteristics .......................................22

USB Transceiver .........................................................22

AC Electrical Characteristics .......................................22

Pin Configuration ...............................................................7

Pin Description Table x ......................................................8

Ordering Information ........................................................23

Ordering Code Defintions ............................................23

Default Descriptors ..........................................................10

Device Descriptor ........................................................10

Configuration Descriptor ..............................................10

Interface Descriptor .....................................................11

Endpoint Descriptor .....................................................11

Device Qualifier Descriptor ..........................................11

Hub Descriptor ............................................................12

Package Diagram ..............................................................24

Acronyms ..........................................................................25

Document Conventions ...................................................25

Units of Measure .........................................................25

ocument History Page ......................................................26

Sales, Solutions, and Legal Information ........................27

Worldwide Sales and Design Support .........................27

Products ......................................................................27

PSoC^®Solutions .........................................................27

Configuration Options .....................................................13

0xD0 Load ...................................................................13

0xD2 Load ...................................................................13

0xD4 Load ...................................................................14

Document #: 001-52934 Rev. *C

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CY7C65621/31

Translator. If a high speed device is connected to this high speed

hub, the route only includes the repeater and no Transaction

Translator because the device and the hub operate at the same

speed. When the hub is operating at full speed (the upstream

port is connected to a full speed host controller), a high speed

peripheral does not operate at its full capability. These devices

only work at full speed. Full and low speed devices connected to

this hub operate at their normal speed.

Introduction

EZ-USB HX2LP Lite™ is Cypress’s next generation family of

high performance, low power USB 2.0 hub controllers. HX2LP

Lite is an ultra low power single chip USB 2.0 hub controller with

integrated upstream and downstream transceivers, a USB Serial

Interface Engine (SIE), USB Hub Control and Repeater logic,

and Transaction Translator (TT) logic. Cypress has also

integrated many external passive components such as pull up

and pull down resistors, reducing the overall bill of materials

required to implement a hub design. The HX2LP portfolio

consists of:

Applications

Typical applications for the HX2LP Lite device family are:

■ Standalone hubs

1. CY7C65631: 4-port/single transaction translator

This device option is for ultra low power applications that re-

quire four downstream ports. All four ports share a single

transaction translator. The CY7C65631 is available in a 56

QFN and is also pin-for-pin compatible with the CY7C65640.

■ Motherboard hubs

■ Monitor hubs

■ Advanced port replicators

■ Docking stations

2. CY7C65621:

This device option is for a 2-port bus powered application.

Both ports share a single transaction translator. The

CY7C65621 is available in a 56 QFN.

■ Split-PC designs

■ External personal storage drives

■ Keyboard hubs

All device options are supported by Cypress’ world class

reference design kits, which include board schematics, bill of

materials, Gerber files, Orcad files, and thorough design

documentation.

Functional Overview

The Cypress CY7C65621/31 USB 2.0 hubs are high perfor-

mance, low system cost solutions for USB. The CY7C65621/31

USB 2.0 hubs integrate 1.5 kΩ upstream pull up resistors for full

speed operation and all downstream 15 kΩ pull down resistors

and series termination resistors on all upstream and downstream

D+ and D– pins. This results in optimization of system costs by

providing built-in support for the USB 2.0 specification.

USB Serial Interface Engine

The Serial Interface Engine (SIE) allows the CY7C65621/31 to

communicate with the USB host. The SIE handles the following

USB activity independently of the Hub Control Block.

■ Bit stuffing/unstuffing

■ Checksum generation/checking

■ TOKEN type identification

■ Address checking.

System Initialization

On power up, the CY7C65621/31 reads an external SPI

EEPROM for configuration information. At the most basic level,

this EEPROM has the Vendor ID (VID), Product ID (PID), and

Device ID (DID) for the customer's application. For more

specialized applications, other configuration options can be

specified. See Configuration Options on page 13 for more

details.

Hub Repeater

The Hub Repeater manages connectivity between upstream and

downstream facing ports that are operating at the same speed.

It supports full speed, low speed, and high speed connectivity.

According to the USB 2.0 specification, the HUB Repeater

provides the following functions:

After reading the EEPROM, if VBUSPOWER (connected to

up-stream V_BUS) is high, CY7C65621/31 enables the pull up

resistor on D+ to indicate its presence to the upstream hub, after

which a USB Bus Reset is expected. During this reset,

CY7C65621/31 initiates a chirp to indicate that it is a high speed

peripheral. In a USB 2.0 system, the upstream hub responds with

a chirp sequence, and CY7C65621/31 is in a high speed mode,

with the upstream D+ pull up resistor turned off. In USB 1.x

systems, no such chirp sequence from the upstream hub is seen,

and CY7C65621/31 operates as a normal 1.x hub (operating at

full speed).

■ Sets up and tears down connectivity on packet boundaries

■ Ensures orderly entry into and out of the Suspend state,

including proper handling of remote wakeups.

Transaction Translator

The Transaction Translator (TT) basically translates data from

one speed to another. A TT takes high speed split transactions

and translates them to full or low speed transactions when the

hub is operating at high speed (the upstream port is connected

to a high speed host controller) and has a full or low speed

devices attached. The operating speed of a device attached on

a downstream facing port determines whether the Routing Logic

connects a port to the Transaction Translator or Hub Repeater.

If a full or low speed device is connected to the hub operating at

high speed, the data transfer route includes the Transaction

Enumeration

After a USB Bus Reset, CY7C65621/31 is in an unaddressed,

unconfigured state (configuration value set to ‘0’). During the

enumeration process, the host sets the hub's address and

configuration.

When the hub is configured, the full hub functionality is available.

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CY7C65621/31

switch device. PWR [n]# output pins of the CY7C65621/31 series

are connected to the respective external power switch's port

power enable signals. Note that each port power output pin of

the external power switch must be bypassed with an electrolytic

or tantalum capacitor as required by the USB specification.

These capacitors supply the inrush currents, which occur during

downstream device hot-attach events. The polarity of this pin can

be configured through the EEPROM; see 0xD4 Load on page 14.

Downstream Ports

The CY7C65621/31 supports a maximum of four downstream

ports, each of which may be marked as usable or removable in

the extended configuration (0xD2 EEPROM load or 0xD4

EEPROM load, see Configuration Options on page 13.

Downstream D+ and D– pull down resistors are incorporated in

CY7C65621/31 for each port. Before the hubs are configured,

the ports are driven SE0 (Single Ended Zero, where both D+ and

D– are driven low) and are set to the unpowered state. When the

hub is configured, the ports are not driven, and the host may

power the ports by sending a SetPortPower command for each

port. After a port is powered, any connect or disconnect event is

detected by the hub. Any change in the port state is reported by

the hubs back to the host through the Status Change Endpoint

(endpoint 1). Upon receipt of SetPortReset request for a port with

a device connected, the hub does as follows:

Overcurrent Detection

Overcurrent detection includes 8 ms of timed filtering by default.

This parameter is configured from the external EEPROM in a

range of 0 ms to 15 ms for both enabled ports and disabled ports

individually. Detection of overcurrent on downstream ports is

managed by control pins connected to an external power switch

device.

The OVR[n]# pins of the CY7C65621/31 series are connected to

the respective external power switch's port overcurrent

indication (output) signals. After detecting an overcurrent

condition, hub reports overcurrent condition to the host and

disables the PWR# output to the external power device. The

polarity of the OVR pins can be configured through the

EEPROM; see 0xD4 Load on page 14.

■ Performs a USB reset on the corresponding port

■ Puts the port in an enabled state

■ Enables the green port indicator for that port (if not previously

overridden by the host)

■ Enables babble detection when the port is enabled.

Babble consists of a non idle condition on the port after EOF2. If

babble is detected on an enabled port, that port is disabled. A

ClearPortEnable request from the host also disables the

specified port.

Port Indicators

The USB 2.0 port indicators are also supported directly by

CY7C65621/31. According to the specification, each

downstream port of the hub optionally supports a status

indicator. The presence of indicators for downstream facing ports

is specified by bit 7 of the wHubCharacteristics field of the hub

class descriptor. The default CY7C65621/31 descriptor specifies

that port indicators are supported (wHubCharacteristics, bit 7 is

set). If port indicators are not included in the hub, disable this bit

through EEPROM settings.

Downstream ports can be individually suspended by the host

with the SetPortSuspend request. If the hub is not suspended, a

remote wakeup event on that port is reflected to the host through

a port change indication in the Hub Status Change Endpoint. If

the hub is suspended, a remote wakeup event on this port is

forwarded to the host. The host may resume the port by sending

a ClearPortSuspend command.

Each port indicator pin is strategically located directly on the

opposite edge of the port with which it is associated. A port

indicator provides two colors: green and amber. This is usually

implemented as two separate LEDs, one amber and the other

green. A combination of hardware and software control is used

to inform the user of the current status of the port or the device

attached to the port and to guide the user through problem

resolution. Colors and blinking provide information to the user.

The significance of the color of the LED depends on the opera-

tional mode of CY7C65621/31. The CY7C65621/31 port

indicators has two modes of operation: automatic and manual.

Upstream Port

The upstream port includes the transmitter and the receiver state

machine. The transmitter and receiver operate in high speed and

full speed depending on the current hub configuration.

The transmitter state machine monitors the upstream facing port

while the Hub Repeater has connectivity in the upstream

direction. This machine prevents babble and disconnect events

on the downstream facing ports of this hub from propagating and

causing the hub to be disabled or disconnected by the hub to

which it is attached.

On power up the CY7C65621/31 defaults to automatic mode,

where the color of the Port Indicator (green, amber, off) indicates

the functional status of the CY7C65621/31 port. In automatic

mode, the CY7C65621/31 turns on the green LED whenever the

port is enabled and the amber LED when an overcurrent

condition is detected. The color of the port indicator is set by the

port state machine. Blinking of the LEDs is not supported in

automatic mode. Table 1 identifies the mapping of color to port

state in automatic mode.

Power Switching

The CY7C65621/31 includes interface signals for external port

power switches. Both ganged and individual (per-port) configu-

rations are supported, with individual switching being the default.

Initially all ports are unpowered. After enumerating, the host may

power each port by sending a SetPortPower request for that port.

The power switching and over-current detection of downstream

ports is managed by control pins connected to an external power

Document #: 001-52934 Rev. *C

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CY7C65621/31

Table 1. Automatic Port State to Port Indicator Color Mapping^[1]

Downstream Facing Hub Port State

Disconnected, Disabled,

Not Configured, Resetting, Testing

Enabled, Transmit, or

TransmitR

Suspended, Resuming,

SendEOR, Restart_E/S

Powered Off

Off or Amber, if due to an

Overcurrent Condition

Off

Green

Off

The LED control lines can also be modulated with a square wave

for power conservation. The polarity of these pins is program-

mable, see 0xD4 Load on page 14.

Table 2. Port Indicator Color Definitions in Manual Mode^[2]

Color Definition Port State

Not Operational

In manual mode, the indicators are under the control of the host,

which can turn on the LEDs, or leave them off. This is done by a

USB hub class request. Blinking of the LEDs is supported in

manual mode. The port indicators allow the user to intervene in

any error detection. For example, when babble is detected while

plugging in a defective device, or when an overcurrent condition

occurs, the port indicators corresponding to the downstream port

blink green or only light the amber LED, respectively.

Off

Amber

Error Condition

Fully Operational

Software Attention

Hardware Attention

Reserved

Green

Blinking Off/Green

Blinking Off/Amber

Blinking Green/Amber

Table 2 displays the color definition of the indicators when

CY7C65621/31 is in manual mode.^[1]

Notes

1. Information presented in Table 1 is from USB 2.0 Specification Tables 11-6.

2. Information presented in Table 2 is from USB 2.0 Specification 11-7.

Document #: 001-52934 Rev. *C

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CY7C65621/31

Pin Configuration

Figure 1. 56-Pin Quad Flat Pack No Leads (8 mm x 8 mm)^[3]

56

55

54

51

50

49

48

47

46

45

44

43

53

52

DD–[4]/NC

1

AMBER#[3]/NC

42

DD+[4]/NC

2

41 GREEN#[3]/NC

40 GND

VCC

3

GND

4

5

VCC

39

38

DD–[3]/NC

AMBER#[2]

DD+[3]/NC

VCC

6

GREEN#[2]

AMBER#[1]

37

36

7

8

GND

GREEN#[1]

GND

35

34

DD–[2]

9

DD+[2] 10

33 VCC

VCC 11

GND 12

32 OVR#[2]

31 PWR#[2]

DD–[1]

13

30 OVR#[1]

29 PWR#[1]

DD+[1] 14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Note

3. NC and Rsvd are for CY7C65621 only.

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CY7C65621/31

Pin Description Table x

Table 3. Pin Assignments^[4]

CY7C65631

Name

CY7C65621

Type Default

Description

Name

VCC

GND

XIN

3

VCC

GND

XIN

Power N/A V_CC. This signal provides power to the chip.

7

11

15

19

23

27

33

39

55

4

Power N/A

V_CC. This signal provides power to the chip.

Power N/A GND. Connect to ground with as short a path as possible.

8

12

16

20

24

28

34

40

47

50

56

21

22

46

Input

N/A 24 MHz Crystal IN or external Clock Input.

XOUT

RESET#

XOUT

RESET#

Output N/A 24 MHz Crystal OUT. (NC if external clock is used)

Input

N/A Active LOW Reset. This pin resets the entire chip. It is normally

tied to V_CCthrough a 100K resistor, and to GND through a 0.1

µF capacitor. Other than this, no other special power up

procedure is required.

45

26

SELFPWR

Input

N/A Self Power. Indicator for bus or self powered. 0 is bus powered,

1 is self powered.

VBUSPOWER VBUSPOWER Input

N/A VBUS. Connect to the VBUS pin of the upstream connector.

This signal indicates to the hub that it is in a connected state,

and may enable the D+ pull up resistor to indicate a connection.

(The hub does so after the external EEPROM is read).

SPI Interface

25

48

49

SPI_CS

SPI_SCK

SPI_SD

SPI_CS

SPI_SCK

SPI_SD

Output

I/O/Z

O

Z

SPI Chip Select. Connect to CS pin of the EEPROM.

SPI Clock. Connect to EEPROM SCK pin.

SPI Dataline Connect to GND with 15 KΩ resistor and to the

Data I/O pin of the EEPROM.

Upstream Port

17

18

D–

D+

D–

D+

I/O/Z

Z

Upstream D– Signal.

Upstream D+ Signal.

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CY7C65621/31

Table 3. Pin Assignments^[4](continued)

CY7C65631

Name

CY7C65621

Name

Type Default

Description

Downstream Port 1

13

14

36

DD–[1]

DD+[1]

I/O/Z

Z

1

Downstream D– Signal.

Downstream D+ Signal.

DD+[1]

AMBER#[1]

AMBER#[1] Output

LED. Driver output for amber LED. Port indicator support.

Default is active LOW. Polarity is controlled through EEPROM.

35

30

29

GREEN#[1]

OVR#[1]

GREEN#[1] Output

1

Z

LED. Driver output for green LED. Port indicator Support.

Default is Active LOW. Polarity is controlled through EEPROM.

OVR#[1]

PWR#[1]

Input

O/Z

Overcurrent Condition Detection Input. Default is active

LOW. Polarity is controlled through EEPROM.

PWR#[1]

Power Switch Driver Output. Default is active LOW. Polarity

is controlled through EEPROM.

Downstream Port 2

9

DD–[2]

DD+[2]

I/O/Z

Z

1

Downstream D– Signal.

Downstream D+ Signal.

10

38

DD+[2]

AMBER#[2]

AMBER#[2] Output

LED. Driver output for amber LED. Port indicator support.

Default is active LOW. Polarity is controlled through EEPROM.

37

32

31

GREEN#[2]

OVR#[2]

GREEN#[2] Output

1

Z

LED. DriveroutputforgreenLED. Portindicatorsupport. Default

is active LOW. Polarity is controlled through EEPROM.

OVR#[2]

PWR#[2]

Input

O/Z

Overcurrent Condition Detection Input. Default is active

LOW. Polarity is controlled through EEPROM.

PWR#[2]

Power Switch Driver Output. Default is active LOW. Polarity

is controlled through EEPROM.

Downstream Port 3

5

6

DD–[3]

NC

I/O/Z

Z

1

Downstream D– Signal.

Downstream D+ Signal.

DD+[3]

42

AMBER#[3]

Output

LED. Driver output for amber LED. Port indicator support.

Default is active LOW. Polarity is controlled through EEPROM.

41

53

GREEN#[3]

OVR#[3]

NC

Output

Input

1

LED. DriveroutputforgreenLED. Portindicatorsupport. Default

is active LOW. Polarity is controlled through EEPROM.

Reserved

Overcurrent Condition Detection Input. Default is Active

LOW. Polarity is controlled through EEPROM.

Reserved. Pull to deasserted state with external resistor on the

CY7C65621/31

54

PWR#[3]

NC

O/Z

Z

Power Switch Driver Output. Default is active LOW. Polarity

is controlled through EEPROM.

Downstream Port 4

1

2

DD–[4]

NC

I/O/Z

Z

1

Downstream D– Signal.

Downstream D+ Signal.

DD+[4]

44

AMBER#[4]

Output

LED. Driver output for amber LED. Port indicator support.

Default is active LOW. Polarity is controlled through EEPROM.

43

51

GREEN#[4]

OVR#[4]

NC

Output

Input

1

LED. DriveroutputforgreenLED. Portindicatorsupport. Default

is active LOW. Polarity is controlled through EEPROM.

Reserved

Overcurrent Condition Detection Input. Default is Active

LOW. Polarity is controlled through EEPROM.

Reserved. Pull to deasserted state with external resistor on the

CY7C65621/31

52

PWR#[4]

NC

O/Z

Z

Power Switch Driver Output. Default is active LOW. Polarity

is controlled through EEPROM.

Note

4. Unused port DD+/DD– lines can be left floating. Leave the port power, amber, and green LED pins unconnected, and deassert the overcurrent pin. Do not

leave the overcurrent pin floating; it is an input.

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CY7C65621/31

Default Descriptors

This section presents the different descriptors that are available. There is a table for each that lists the functionality of each

descriptor.

Device Descriptor

The standard device descriptor for CY7C65621/31 is based on the information found in the SPI EEPROM. The information in the

EEPROM overrides the default descriptor values. If no EEPROM is used, the CY7C65621/31 enumerates with the default

descriptor values as shown in the table. If a blank EEPROM is connected, the hub enumerates as vendor defined class instead

of a hub class. This is for the purpose of programming the EEPROM with the Cypress driver.

Byte

0

Full Speed

0x12

High Speed

0x12

Field Name

bLength

Description

18 Bytes

1

0x01

bDescriptorType

bcdUSB

Device_Descriptor

2,3

4

0x0110

0x09

0x0200

0x09

USB Specification 2.0 (1.1 if forced FS)

Hub

bDeviceClass

bDeviceSubClass

bDeviceProtocol

bMaxPacketSize0

wIdVendor

5

0x00

None

6

0x00

0x01

None

7

0x40

64 Bytes

8,9

10,11

12, 13

14

15

16

17

0x04B4

0x6560

0x0915

0x00

0x04B4

0x6560

0x0915

0x00

VID (overridden by what is defined in EEPROM)

PID (overridden by what is defined in EEPROM)

DID (overridden by what is defined in EEPROM)

Overridden by EEPROM

One Configuration Supported

wIdProduct

wbcdDevice

iManufacturer

iProduct

0x00

iSerialNumber

bNumConfigurations

0x01

Configuration Descriptor

Byte

Full Speed

High Speed

Field Name

Description

9 bytes

0

1

2

4

5

6

7

0x09

bLength

0x02^[5]/0x07^[6]0x02^[5]/0x07^[6]bDescriptorType

Config_Descriptor

Length of all other descriptors

1

0x0019

0x01

0x0019

0x01

wTotalLength

bNumInterfaces

bConfigurationValue

iConfiguration

bmAttributes

0x01

The configuration to use

0x00

0xA0

0xE0

0xA0

0xE0

0x57^[5]

Value depends on pin 45 - SELFPWR signal

SELFPWR = 0 yields 0xA0 and =1 yields 0xE0

8

0x28

bMaxPower

Notes

5. Configured speed descriptor.

6. Other speed descriptor.

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CY7C65621/31

Interface Descriptor

Byte

Full Speed

0x09

High Speed

0x09

Field Name

bLength

Description

0

1

2

3

4

5

6

7

8

9 bytes

Interface_Descriptor

0x04

bDescriptorType

bInterfaceNumber

bAlternateSetting

bNumEndpoints

bInterfaceClass

bInterfaceSubClass

bInterfaceProtocol

iInterface

0x00

0x01

0x09

0x00

Endpoint Descriptor

Byte

Full Speed

0x07

High Speed

0x07

Field Name

bLength

Description

0

1

7 Bytes

0x05

bDescriptorType

bEndpointAddress

bmAttributes

Endpoint_Descriptor

IN endpoint #1

Interrupt

2

0x81

3

0x03

4,5

6

0x0001

0xFF

0x0001

0x0C

wMaxPacketSize

bInterval

Maximum packet size

Polling rate

Device Qualifier Descriptor

Byte

0

Full Speed

0x0A

High Speed

0x0A

Field Name

bLength

Description

10 Bytes

1

0x06

bDescriptorType

bcdUSB

Device_Qualifier

2,3

4

0x0200

0x09

0x0200

0x09

bDeviceClass

bDeviceSubClass

bDeviceProtocol

bMaxPacketSize0

bNumConfigurations

bReserved

5

0x00

6

0x01

0x00

7

0x40

8

0x01

9

0x00

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CY7C65621/31

Hub Descriptor

Byte All Speed

Field Name

bLength

Description

0

1

2

0x09

9 bytes

0x29

0x04^[7]

0x02

bDescriptorType

bNbrPorts

Hub descriptor

Number of ports supported, CY7C65631.

Number of ports supported, CY7C65621.

3,4

0x0089^[7]wHubCharacteristics b1, b0: Logical power switching mode

00: Ganged power switching (all ports’ power at once)

01: Individual port power switching (Default in CY7C65621/31)

b2: Identifies a compound device,

0: Hub is not part of a compound device (Default in CY7C65621/31),

1: Hub is part of a compound device.

b4, b3: Overcurrent protection mode

00: Global overcurrent protection. The hub reports overcurrent as a

summation of all ports’ current draw, without a breakdown of individual port

overcurrent status.

01: Individual port overcurrent protection. The hub reports overcurrent on a

per-port basis. Each port has an over-current status (Default in

CY7C65621/31).

1X: No overcurrent protection. This option is allowed only for bus powered

hubs that do not implement overcurrent protection.

b6, b5: TT Think Time

00: TT requires at most eight FS bit times of inter transaction gap on a full or

low speed downstream bus (Default in CY7C65621/31).

b7: Port indicators supported,

0: Port indicators are not supported on its downstream facing ports and the

SetPortIndicator request has no effect.

1: Port indicators are supported on its downstream facing ports and the

SetPortIndicator request controls the indicators. See Functional Overview and

Supported USB Requests. (Default in CY7C65621/31).

b15,. b8: Reserved

5

6

0x32^[7]

bPwrOn2PwrGood

bHubContrCurrent

Time from when the port is powered to when the power is good on that port

0x28^[7]

Maximum current requirement for the Hub Controller at full speed.

Maximum current requirement for the Hub Controller at high speed.

0xAE^[7]

7

8

0x00^[7]

0xFF^[7]

bDeviceRemovable

bPortPwrCtrlMask

Indicates if the logical port has a removable device attached (0 = removable,

1 = non removable)

Required for compatibility with software written for 1.0 compliant devices

Note

7. This value is configured through the external EEPROM.

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CY7C65621/31

Byte 0: 0xD2

Configuration Options

Needs to be programmed with 0xD2

Byte 1: VID (LSB)

Systems using CY7C65621/31 may have the option of using a

fuse ROM which is preset at the factory to configure the hub.

Otherwise, it must have an external EEPROM for the device to

have a unique VID, PID, and DID. The CY7C65621/31 can

communicate with SPI EEPROM that are either double byte

addressed or single byte with the 9th bit within the instruction

byte, such as the 24LC040 parts use. The 25LC080 EEPROM

uses the double byte address format, and therefore the

CY7C656xx can communicate with these parts. The '010s and

'020s use the same command format as is used to interface with

the ‘040. Therefore, these can also be used to interface with the

CY7C65621/31.

Least Significant Byte of Vendor ID

Byte 2: VID (MSB)

Most Significant Byte of Vendor ID

Byte 3: PID (LSB)

Least Significant Byte of Product ID

Byte 4: PID (MSB)]

Most Significant Byte of Product ID

Byte 5: Reserved

If the attached EEPROM is blank (0xFF), the hub enumerates as

a vendor class device. In this configuration, the hub connects to

the Cypress driver to allow programming of the EEPROM. When

the EEPROM is programmed a power cycle configures the chip

as a hub class device.

Reserved

Byte 6: DID (MSB)]

Most Significant Byte of Device ID

0xD0 Load

Byte 7: EnabledOvercurrentTimer[3:0],

DisabledOvercurrentTimer[3:0]

With this EEPROM format, only a unique VID, PID, and DID must

be present in the external SPI EEPROM. The contents of the

EEPROM must contain this information in the following format:

Count time in ms for filtering overcurrent detection. Bits 7–4

are for an enabled port, and bits 3–0 are for a disabled port.

Both range from 0 ms to 15 ms. See section Port Indicators

on page 5. Default: 8 ms = 0x88.

Byte

Value

0

1

2

3

4

5

6

0xD0

Byte 8: ActivePorts[3:0], RemovablePorts[3:0]

VID (LSB)

VID (MSB)

PID (LSB)

PID (MSB)

reserved

DID (MSB)

Bits 7–4 are the ActivePorts[3:0] bits that indicates if the cor-

responding port is usable. For example, a two-port hub that

uses ports 1 and 4 sets this field to 0x09. The total number of

ports reported in the Hub Descriptor: bNbrPorts field is calcu-

lated from this. Bits 3–0 are the RemovablePorts[3:0] bits that

indicates whether the corresponding logical port is removable

(set to high). Logical port numbers are from 1 to n where n is

the total number of active ports. If port 2 is disabled then phys-

ical ports 1, 3, and 4 map to logical ports 1, 2, and 3. These

0xD2 Load

Byte

Value (MSB->LSB)

bit

values

are

reported

appropriately

in

the

HubDescriptor:DeviceRemovable field. Default: 0xFF.

0

1

2

3

4

5

6

7

0xD2

VID (LSB)

VID (MSB)

PID (LSB)

PID (MSB)

reserved

DID (MSB)

Byte 9: MaximumPower

This value is reported in the ConfigurationDescriptor:bMax-

Power field and is the current in 2 mA increments that is re-

quired from the upstream hub. Default: 0x28 = 80 mA for full

speed and 0x57 = 174 mA for high speed.

Byte 10: HubControllerPower

This value is reported in the HubDescriptor:bHubContrCur-

rent field and is the current in milliamperes required by the

hub controller. Default: 0x50 = 80 mA for full speed and 0xAE

= 174 mA for high speed.

EnabledOverCurrentTimer[3:0],

DisableOvercurrentTimer[3:0]

8

9

ActivePorts[3:0], RemovablePorts[3:0]

MaxPower

Byte 11: PowerOnTimer

10 HubControllerPower

11 PowerOnTimer

This

value

is

reported

in

the

HubDescriptor:

bPwrOn2PwrGood field and is the time in 2 ms intervals from

the SetPortPower command until the power on the corre-

sponding downstream port is good. Default: 0x32 = 100 ms.

12 IllegalHubDescriptor, CompoundDevice,

FullspeedOnly, NoPortIndicators, Reserved,

GangPowered, Reserved, Reserved

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CY7C65621/31

Byte 12: IllegalHubDescriptor, CompoundDevice, Full

speedOnly, NoPortIndicators, Reserved, GangPowered,

SingleTTOnly

Factory

Byte

Value (MSB->LSB)

Fusible

17

IllegalHubDescriptor, Compound-

Device, FullspeedOnly, NoPortIndi-

cators, Reserved, GangPowered,

SingleTTOnly, Reserved

X

Bit 7: IllegalHubDescriptor. For GetHubDescriptor request,

some USB hosts use a DescriptorTypeof 0x00 instead of

HUB_DESCRIPTOR, 0x29. According to the USB 2.0 stan-

dard, a hub must treat this as a Request Error, and STALL the

transaction accordingly (USB 2.0, 11.24.2.5). For systems

that do not accept this, the IllegalHubDescriptor configuration

bit may be set to allow CY7C65621/31 to accept a Descrip-

torType of 0x00 for this command. Default is 1.

18

AmberPolarity, GreenPolarity,

ModulateIndicators, PowerControlPo-

larity, OverCurrentPolarity,

OverCurrentMode1,

X

OverCurrentMode2

19

20

21

22

23

24

Write Protect

NumLangs

Bit 6: CompoundDevice. Indicates whether the hub is part of

a compound device. This is reported in the HubDescriptor,

wHub-Characteristics: b2. Default set to ‘0’.

SupportedStrings

ActivePorts[3:0]

RemovablePorts[3:0]

LangID

Bit 5: Fullspeed. Only configures the hub to be a full speed

only device. Default is set to ‘0’.

X

Bit 4: NoPortIndicators. Turns off the port indicators and does

not report them as present in the HubDescriptor, wHubChar-

acteristics b7 field. Default is set to ‘0’.

a

iManufacturer

=24+2N

b

iProduct

Bit 3: Reserved. Set this bit to ‘0’.

=a+2N

Bit 2: GangPowered. Indicates whether the port power

switching is ganged (set to 1) or per-port (set to ‘0’). This is

reported in the HubDescriptor, wHubCharacteristics field, b4,

b3, b1, and b0. Default is set to ‘0’.

c

iSerialNumber

iConfiguration(FS)

iConfiguration(HS)

iInterface(0)

=b+2N

d

=c+2N

Bit 1: Reserved. Default is set to ‘0’.

Bit 0: Reserved. Default is set to ‘0’.

e

=d+2N

f

0xD4 Load

=e+2N

g

reserved

Factory

Fusible

Byte

Value (MSB->LSB)

=f+2N

h=g+2N Strings

N:NumLangs

0

1

2

3

4

5

6

7

0xD4

VID (LSB)

X

VID (MSB)

PID (LSB)

PID (MSB)

reserved

Byte 0: 0xD4

Needs to be programmed with 0xD4

Byte 1: VID (LSB)

Least Significant Byte of Vendor ID

Byte 2: VID (MSB)

DID (MSB)

X

EnabledOverCurrentTimer[3:0],

DisableOvercurrentTimer[3:0]

Most Significant Byte of Vendor ID

Byte 3: PID (LSB)

8

MaxPower (Full speed)

MaxPower (High speed)

Reserved

X

9

Least Significant Byte of Product ID

Byte 4: PID (MSB)

10

11

12

Reserved

Most Significant Byte of Product ID

Byte 5: Reserved

HubControllerPower Full Speed Bus

Powered

X

Reserved.

13

14

15

16

HubControllerPower High Speed Bus

Powered

Byte 6: DID (MSB)

HubControllerPower Full Speed Self

Powered

Most Significant Byte of Device ID

HubControllerPower High Speed Self

Powered

PowerOnTimer

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CY7C65621/31

Byte 7: EnabledOvercurrentTimer[3:0], DisabledOvercur-

rentTimer[3:0]

that do not accept this, the IllegalHubDescriptor configuration

bit may be set to allow CY7C65621/31 to accept a Descrip-

torType of 0x00 for this command. Default set to 1.

Count time in ms for filtering overcurrent detection. Bits 7–4

are for an enabled port, and bits 3–0 are for a disabled port.

Both range from 0 ms to 15 ms. See section Port Indicators

on page 5. Default: 8 ms = 0x88.

Bit 6: CompoundDevice. Indicates whether the hub is part of

a compound device. This is reported in the HubDescriptor,

wHub-Characteristics: b2. Default is set to ‘0’.

Byte 8: MaximumPower (Full Speed)

Bit 5: Fullspeed. Only configures the hub to be a full speed

only device. Default is set to ‘0’.

This value is reported in the ConfigurationDescriptor:bMax-

Power field and is the current in 2 mA increments that is re-

quired from the upstream hub when connected at full speed.

Default: 0x28 = 80 mA for full speed.

Bit 4: NoPortIndicators. Turns off the port indicators and does

not report them as present in the HubDescriptor, wHubChar-

acteristics b7 field. Default is set to ‘0’.

Byte 9: MaximumPower (High Speed)

Bit 3: Reserved. Set this bit to ‘0’.

This value is reported in the ConfigurationDescriptor:bMax-

Power field and is the current in 2 mA increments that is re-

quired from the upstream hub when connected at high speed.

Default: 0x57 = 174 mA for high speed.

Bit 2: GangPowered. Indicates whether the port power

switching is ganged (set to 1) or per-port (set to ‘0’). This is

reported in the HubDescriptor, wHubCharacteristics field, b4,

b3, b1, and b0. Default is set to ‘0’.

Byte 10: Reserved

Bit 1: Reserved. Default is set to ‘0’.

Bit 0: Reserved. Default is set to ‘0’.

Write zeros to this location.

Byte 11: Reserved

Byte 18: AmberPolarity, GreenPolarity, SelfPowerable,

ModulateIndicators, PowerControlPolarity, OverCurrentPo-

larity, OverCurrentMode1, OverCurrentMode2

Write zeros to this location.

Byte 12: HubControllerPower (Full Speed, bus powered)

Bit 7: AmberPolarity. Indicates the polarity of the amber indi-

cator control. (1 = high, 0 = low)

This value is reported in the HubDescriptor:bHubContrCur-

rent field and is the current in milliamperes required by the

hub controller when connected on the upstream hub as a full

speed. Default: 0x50 = 80 mA for full speed.

Bit 6: GreenPolarity. Indicates the polarity of the green indica-

tor control. (1 = high, 0 = low)

Bit 5: SelfPowerable. Indicates whether the hub is capable of

operating in self-powered mode. If ‘0’, the hub is capable of

bus-powered operation only.

Byte 13: HubControllerPower (High Speed, bus powered)

This value is reported in the HubDescriptor:bHubContrCur-

rent field and is the current in milliamperes required by the

hub controller when connected on the upstream hub as a high

speed. Default: 0xAE = 174 mA for high speed.

Bit 4: ModulateIndicators. If this bit is set, the indicator outputs

are modulated by a square wave of 120 Hz, for power sav-

ings. If ‘0’, the outputs are static.

Byte 14: HubControllerPower (Full Speed, self powered)

Bit 3: PowerControlPolarity. If set, the power control outputs

are active HIGH. If not set, the power control outputs are ac-

tive LOW.

This value is reported in the HubDescriptor:bHubContrCur-

rent field and is the current in milliamperes required by the

hub controller when connected on the upstream hub as a full

speed. Default: 0x50 = 80 mA for full speed.

Bit 2: OverCurrentPolarity. If set, the over-current inputs are

active HIGH. If not set, the over-current inputs are active

LOW.

Byte 15: HubControllerPower (High speed, self powered)

This value is reported in the HubDescriptor:bHubContrCur-

rent field and is the current in milliamperes required by the

hub controller when connected on the upstream hub as a high

speed. Default: 0x64 = 100 mA for high speed.

Bit 1: OverCurrentMode1. Reported as bit 4 of the wHubChar-

acteristics field of the hub descriptor. If set to ‘1’, this bit dis-

ables over-current detection.

Bit 0: OverCurrentMode2. Reported as bit 3 of the wHubChar-

acteristics field of the hub descriptor. If Bit 1 of this byte is set

to ‘0’, over-current detection is enabled. If this bit (Bit 0) is set

to ‘1’, the hub reports over-current on a per-port basis. If set

to ‘0’, the hub reports over-current as the summation of all

ports’ current draw.

Byte 16: PowerOnTimer

This

value

is

reported

in

the

HubDescriptor:

bPwrOn2PwrGood field and is the time in 2 ms increments

from the SetPortPower command until the power on the cor-

responding downstream port is good. Default: 0x32 = 100 ms.

Byte 19: Write Protect

Byte 17: IllegalHubDescriptor, CompoundDevice, Full

speedOnly, NoPortIndicators, Reserved, GangPowered,

Reserved

Writing the value 0x42 to this field enables Write Protect and

any future writes to the EEPROM will fail. Default is set to ‘0’.

Bit 7: IllegalHubDescriptor. For GetHubDescriptor request,

some USB hosts use a DescriptorTypeof 0x00 instead of

HUB_DESCRIPTOR, 0x29. According to the USB 2.0 stan-

dard, a hub must treat this as a Request Error, and STALL the

transaction accordingly (USB 2.0, 11.24.2.5). For systems

Byte 20: NumLangs

Number of supported string languages. CY7C656xx supports

a maximum of 31 languages; if this field is set to ‘0’ or a num-

ber larger than 31, all string support is disabled.

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CY7C65621/31

Byte 21: SupportedStrings

Byte 24: LangID

This field contains a bitmap of strings supported by the hub.

A set bit indicates that the standard string is supported. A bit

not set indicates that the string is not supported. The hub

controller returns a non-zero index for each string that is sup-

ported, and returns 0x00 for each string not supported, as

indicated by this field. The bits in this field correspond to the

following standard strings.

Array of LangID codes supported by the hub. Each LangID

consists of two bytes, stored LSB first. The array has Num-

Langs entries (2 * NumLangs bytes).

Byte a: iManufacturer

Array of addresses for the iManufacturer strings. Each ad-

dress is two bytes long, stored LSB first. The array has Num-

Langs entries (2 * NumLangs bytes). (The starting EEPROM

address is based upon the number entered for NumLangs.

The address a = 24 + 2 * NumLangs.

Table 4. Byte 21 Supported Strings

Bit

Name

Description

7

6

5

Reserved

Interface (0)

Byte b: iProduct

Array of addresses for the iProduct strings. Each address is

two bytes long, stored LSB first. The array has NumLangs

entries (2 * NumLangs bytes).

The iInterface string index

reported in the first interface

descriptor (alternate setting 0)

The address b = a + 2 * NumLangs.

Byte c: iSerialNumber

4

3

iConfiguration (High speed) The iConfiguration

string index reported in the

Array of addresses for the iSerialNumber strings. Each ad-

dress is two bytes long, stored LSB first. The array has Num-

Langs entries (2 * NumLangs bytes).

configuration descriptor, when

operating at high speed

The address c = b + 2 * NumLangs.

iConfiguration (Full speed) The iConfiguration

string index reported in the

Byte d: iConfiguration(Full Speed)

configuration descriptor, when

Array of addresses for the iConfiguration (full speed) strings.

Each address is two bytes long, stored LSB first. The array

has NumLangs entries (2 * NumLangs bytes).

The address d = c + 2*NumLangs.

operating at full speed

2

1

0

iSerial Number The iSerialNumber string index

reported in the device descriptor

iProduct

The iProduct string index

reported in the device descriptor

Byte e: iConfiguration(High Speed)

Array of addresses for the iConfiguration (high speed) strings.

Each address is two bytes long, stored LSB first. The array

has NumLangs entries (2 * NumLangs bytes).

iManufacturer

The iManufacturer string index

reported in the device descriptor

The address e = d + 2 * NumLangs.

Byte 22: ActivePorts[3:0]

Byte f: iInterface(0)

Bits 3–0 are the ActivePorts[3:0] bits that indicates if the cor-

responding port is usable. For example, a two-port hub that

uses ports 1 and 4 would set this field to 0x09. The total num-

ber of ports reported in the Hub Descriptor: bNbrPorts field is

calculated from this. Default 0x0F

Array of addresses for the iInterface(0) strings. Each address

is two bytes long, stored LSB first. The array has NumLangs

entries (2 * NumLangs bytes).

The address f = e + 2 * NumLangs.

Byte g: iInterface(1)

Reserved

Byte 23: RemovablePorts[3:0]

Bits 3–0 are the RemovablePorts[3:0] bits that indicates

whether the corresponding logical port is removable (set to

high). Logical port numbers are from 1 to n where n is the total

number of active ports. If port 2 is disabled then physical ports

1, 3, and 4 map to logical ports 1, 2, and 3. These bit values

are recorded in the HubDescriptor:DeviceRemovable field.

Default 0x0F.

Byte h: Strings

Strings addressed by the string pointers. Strings must comply

with the USB specification. The first byte must be the length

of the string in bytes, the second must be 0x03, and the string

must be in Unicode.

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CY7C65621/31

Supported USB Requests

Device Class Commands

Table 5. Device Class Requests

Request

GetDeviceStatus

bmRequestType bRequest

wValue

0x0000

wIndex

0x0000

wLength

Data

10000000B

10000001B

10000010B

10000000B

00000000B

10000001B

0x00

0x06

0x08

0x09

0xA

0x0002

2 Byte Device

Status

GetInterfaceStatus

0x0000

0x0001

0x0002

0x0006

0x0007

0x0000

Zero or

2 Byte Interface

Status

GetEndpointStatus

2 Byte Endpoint

Status

GetDeviceDescriptor

GetConfigDescriptor

GetDeviceQualifierDescriptor

Descriptor Descriptor

Language ID Length

Zero or

Language ID Length

Descriptor Descriptor

Zero or

Language ID Length

Descriptor Descriptor

GetOtherSpeedConfiguration

Descriptor

Zero or

Language ID Length

Descriptor Descriptor

GetConfiguration^[8]

SetCongfiguration^[8]

GetInterface

0x0000

0x0001

0x0000

0x0001

Configuration

Value

Configuration

Value

None

0x0000

Interface Number

SetInterface

00000001B

0x0B

Alternate

Setting

Interface

Number

0x0000

None

SetAddress

00000000B

0x05

0x03

0x01

Device Address 0x0000

0x0000

None

SetDeviceRemoteWakeup

SetDeviceTest_J

0x01

0x02

0x00

0x01

0x00

0x0000

0x0100

0x0200

0x0300

0x0400

0x0000

SetDeviceTest_K

SetDeviceTest_SE0_NAK

SetDeviceTest_Packet

SetEndpointHalt

ClearDeviceRemoteWakeup

ClearEndpointHalt

Note

8. Only one configuration is supported in CY7C656xx.

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CY7C65621/31

Hub Class Commands

Table 6. Hub Class Requests

Request

bmRequestType bRequest

wValue

0x0000

wIndex

0x0000

wLength

Data

GetHubStatus

10100000B

0x00

0x0004

Hub status (See Table 11-19

of USB 2.0 Specifications)

Change Status (See Table

11-20 of USB 2.0 Specifica-

tions)

GetPortStatus

10100011B

0x00

0x0000

Byte 0: 0x00 0x0004

Byte 1: Port

Port status (See Table 11-21

of USB 2.0 Specifications)

Change Status (See Table

11-20 of USB 2.0 Specifica-

tions)

ClearHubFeature

ClearPortFeature

00100000B

00100011B

0x01

Feature

0x0000

None

Selectors^[9]0 or 1

Feature

Byte 0: 0x00 0x0000

Byte 1: Port

None

Selectors^[9]

1, 2, 8, 16, 17, 18, 19,

or 20

ClearPortFeature

SetHubFeature

SetPortFeature

00100011B

00100000B

00100011B

0x01

0x03

Feature Selectors^[9]Byte 0: -

0x0000

None

22

Byte 1: Port

(PORT_INDICATOR)

Feature

Selector^[9]

0 or 1

0x0000

Port

Feature

None

Selectors^[9]

2, 4 or 8

Feature

Byte 0:

Selector^[9]21

(PORT_TEST)

Selectors^[9]

1,2, 3, 4 or 5

Byte 1: Port

SetPortFeature

00100011B

10100000B

0x03

0x06

Feature

Byte 0:

0x0000

None

Selector^[9]22

Selectors^[10]

(PORT_INDICATOR) 0, 1, 2, or 3

Byte 1: Port

GetHubDescriptor

Descriptor Type and

Descriptor Index

Hub

Descriptor

Length

ClearTTBuffer

ResetTT

00100011B

00100000B

0x08

0x09

Dev_Addr, EP_Num TT_Port

0x0000

None

0x0000

TT_Flags

0x0000

Byte 0: 0x00 0x0000

Byte 1: Port

GetTTState

StopTT

10100011B

00100011B

0X0A

0x0B

Byte 0: 0x00 TT State TT State

Byte 1: Port Length

Byte 0: 0x00 0x0000

Byte 1: Port

None

Notes

9. Feature selector values for different features are presented in Table 7 on page 19.

10. Selector values for different features are presented in Table 9 on page 20.

Document #: 001-52934 Rev. *C

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CY7C65621/31

Table 6. Hub Class Requests (continued)

Request

bmRequestType bRequest

wValue

wIndex

0x00

wLength

Data

Vendor Commands

Read EEPROM

11000000B

0x02

0x00

Length

Data

This request results in length bytes of data being read from the external memory device, and returned to the host. Data is read

beginning with address 0. This request fails if there is no external memory device present. This request is only valid if the hub is

in the Configured state; the request fails otherwise.

Write EEPROM

01000000B

0x01

0x00

Length

Data

This request results in length bytes of data being written to the external memory device. Data is written beginning with address

0. This request fails if there is no external memory device present. This request is only valid if the hub is in the Configured state

or if the external memory device write protect byte is set; the request fails otherwise.

Table 8. Test Mode Selector for Feature Selector

PORT_TEST (0x21)^[11]

Table 7. Hub Class Feature Selector

Feature Selector

C_HUB_LOCAL_POWER

C_HUB_OVER_CURRENT

PORT_CONNECTION

PORT_ENABLE

Recipient

Value

0

PORT_TEST Mode Description

Test_J

Selector Value

Hub

Port

1

2

3

4

5

1

Test_K

0

Test_SE0_NAK

Test_Packet

1

PORT_SUSPEND

2

Test_Force_Enable

PORT_RESET

4

PORT_POWER

8

PORT_LOW_SPEED

C_PORT_CONNECTION

C_PORT_ENABLE

C_PORT_SUSPEND

C_PORT_OVER_CURRENT

C_PORT_RESET

9

16

17

18

19

20

21

22

PORT_TEST

PORT_INDICATOR

Note

11. Selector values for different features are presented in Table 8 on page 19.

Document #: 001-52934 Rev. *C

Page 19 of 27

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CY7C65621/31

Table 9. Port Indicator Selector for Feature Selector PORT_INDICATOR (0x22)

Port Indicator Color

Selector Value

Port Indicator Mode

Color set automatically as shown in Table 1 on page 6

0

1

2

3

Automatic mode

Manual mode

Amber

Green

Off

Upstream USB Connection

The following is a schematic of the USB upstream connector.

Figure 2. USB Upstream Port Connection

BUSPOWER

VCC

D–

2.2 μF

10 V

D+

100 kΩ

GND

SHELL

Downstream USB Connections

The following is a schematic of the USB downstream connector.

Figure 3. USB Downstream Port Connection

PWRx

VCC

D–

150 µF

10 V

0.01 µF

DD–[X]

DD+[X]

D+

GND

SHELL

LED Connections

The following is a schematic of the LED circuitry.

Figure 4. USB Downstream Port Connection

3.3 V

680Ω

GREEN#[x]

AMBER#[x]

680Ω

Document #: 001-52934 Rev. *C

Page 20 of 27

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CY7C65621/31

System Block Diagram

Figure 5. Sample Schematic for 4-Port Self Powered Configuration

5 V

VBUSPOWER

VBUS

VCC

D–

DsPWR1

VCC

PWR1

OVR1

2.2 μF

DD–[1]

DD+[1]

0.01 μF

15 kΩ

D–

D+

DsPWR4

DsPWR3

DsPWR2

DsPWR1

D–

150 μF

10 V

Power

Management

D+

150 kΩ

D+

PWR2

OVR2

PWR3

GND

SHELL

GND

OVR3

PWR4

OVR4

SHELL

3.3 V

680Ω

GREEN#[1]

AMBER#[1]

680Ω

SPI_SD

DO

DsPWR2

DI

SPI_SCK

SPI_CS

VCC

CLK

SPI_SD

DD–[2]

DD+[2]

0.01 μF

D–

D+

150 μF

10 V

CS

SPI

GND

EEPROM

SHELL

24 MHz

3.3 V

680Ω

GREEN#[2]

AMBER#[2]

3.3 V

12 pF

680Ω

10K

SELFPWR

DsPWR3

VCC

D–

GREEN[1]

AMBER[1]

GREEN[1]

AMBER[1]

DD-[3]

DD+[3]

0.01 μF

VBUSPOWER

3.3 V

VBUSPOWER

150 μF

10 V

D+

GREEN[2]

AMBER[2]

GREEN[2]

AMBER[2]

GND

SHELL

100K

GREEN[3]

AMBER[3]

GREEN[3]

AMBER[3]

RESET

3.3 V

0.1μF

680Ω

GREEN#[3]

AMBER#[3]

GREEN[4]

AMBER[4]

GREEN[4]

AMBER[4]

D–

D+

D-

HX2LP Lite

D+

PWR1

OVR1

PWR1

OVR1

DD–[1]

DD+[1]

DD-[1]

DD+[1]

PWR2

OVR2

PWR2

OVR2

DsPWR4

PWR3

OVR3

PWR3

OVR3

DD–[2]

DD+[2]

DD-[2]

DD+[2]

VCC

D–

DD-[4]

DD+[4]

0.01 μF

150 μF

10 V

PWR4

OVR4

PWR4

OVR4

D+

DD–[3]

DD+[3]

DD-[3]

DD+[3]

GND

SHELL

SPI_CS

SPI_SCK

DD–[4]

DD+[4]

DD-[4]

DD+[4]

3.3 V

SPI_SD

680Ω

GREEN#[4]

AMBER#[4]

Document #: 001-52934 Rev. *C

Page 21 of 27

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CY7C65621/31

Electrical Characteristics

Absolute Maximum Ratings

Operating Conditions

Storage temperature ................................ –65 °C to +150 °C

Ambient temperature with power applied:

T_A(Ambient temperature under bias)

Commercial

......................... 0 °C to +70 °C

Commercial

..................................... 0 °C to +70 °C

Supply voltage..........................................+3.15 V to +3.45 V

Ground voltage................................................................. 0 V

Oscillator or Crystal Frequency (FOSC)......24 MHz ± 0.05%

parallel resonant, 12 pF load capacitance, 0.5 mW

Supply voltage to ground potential ..............–0.5 V to +4.0 V

DC voltage applied to outputs

in high Z State...................................... –0.5 V to V_CC+ 0.5 V

Power dissipation (4 HS ports) ..................................... 0.9 W

Static discharge voltage...........................................> 2000 V

Maximum output sink current per I/O .......................... 10 mA

DC Electrical Characteristics

Parameter

V_CC

_CCRampUp Ramp rate on V_CC

Description

Conditions

Min

Typ

Max Unit

Supply voltage

3.15

3.3

3.45

18

V

V/ms

V

V_IH

V_IL

Input high voltage

Input low voltage

Input leakage current

Output voltage high

Output low voltage

Output current high

Output current low

Input pin capacitance

Suspend current

Supply Current

2

5.25

0.8

–0.5

V

I_l

0 < V_IN< V_CC

I_OUT= 4 mA

I_OUT= –4 mA

±10

μA

V

V_OH

V_OL

I_OH

I_OL

2.4

0.4

4

V

mA

pF

μA

4

C_IN

I_SUSP

I_CC

10

80

4 Active Ports

Full speed host, full speed devices

High speed host, high speed devices

High speed host, full speed devices

Full speed host, full speed devices

High speed host, high speed devices

High speed host, Full speed devices

Full speed host

86

231

154

77

110

260

180

100

190

160

90

mA

2 Active Ports

163

136

65

No Active Ports

High speed host

93

120

USB Transceiver

USB 2.0 certified in full, low, and high speed modes.

AC Electrical Characteristics

Both the upstream USB transceiver and all four downstream transceivers have passed the USB-IF USB 2.0 Electrical Certification

Testing.

Document #: 001-52934 Rev. *C

Page 22 of 27

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CY7C65621/31

Table 10. Serial Peripheral Interface

Parameter

Description

Clock rise/fall time

Clock frequency

Data setup time

Hold time

Conditions

Min

Typ

Max

500

250

Unit

ns

KHz

ns

50

100

1.9

ns

Reset period

ms

Ordering Information

Ordering Code

Package Type

CY7C65621-56LTXC

CY7C65621-56LTXCT

CY7C65631-56LTXC

CY7C65631-56LTXCT

CY4606

56-pin QFN 2-Port

56-pin QFN 2-Port tape and reel

56-pin QFN 4-Port

56-pin QFN 4-Port tape and reel

CY7C65631 USB 2.0 4-Port hub reference design kit

CY7C65621 USB 2.0 2-Port hub reference design kit

CY4605

Ordering Code Defintions

CY

7

C

65 621, 631 LTX (C, I)

T

Tape and Reel

Thermal rating:

C = Commercial; I = Industrial

Package type:

LTX = QFN (Sawn Type) Pb-free

621 = Two port hub

631= Four port hub

Family code: 65 = USB hubs

Technology code: C = CMOS

Marketing code: 7 = Cypress products

Company ID: CY = Cypress

Document #: 001-52934 Rev. *C

Page 23 of 27

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CY7C65621/31

Package Diagram

The CY7C65621/31 is available in a space saving 56-pin QFN (8 × 8 mm).

Figure 6. 56-Pin QFN (8 × 8 × 0.90 mm)

51-85187 *E

Document #: 001-52934 Rev. *C

Page 24 of 27

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CY7C65621/31

Acronyms

Document Conventions

Table 11. Acronyms Used in this Document

Units of Measure

Acronym

ASIC

Description

application specific integrated circuit

central processing unit

digital signal processor

error correcting codes

general programmable interface

general purpose I/O

integrated circuit

Table 12. Units of Measure

Symbol

KHz

Unit of Measure

CPU

DSP

ECC

GPIF

GPIO

IC

kilohertz

MHz

uA

megahertz

microamperes

milliamperes

milliseconds

milliwatts

mA

ms

mW

ns

ICE

in-circuit emulator

nanosecond

picoFarads

volts

I/O

input/output

pF

LSb

least-significant bit

V

LVD

low voltage detect

MSb

PLL

most-significant bit

phase locked loop

PCB

POR

PSoC®

SCL

SDA

SPI

printed circuit board

power on reset

Programmable System-on-Chip

serial clock

serial data line

serial peripheral interface

random access memory

universal serial bus

RAM

USB

USB-IF

USB implementor’s forum

Document #: 001-52934 Rev. *C

Page 25 of 27

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CY7C65621/31

Document History Page

Document Title: CY7C65621/31 EZ-USB HX2LP Lite™ Low Power USB 2.0 Hub Controller Family

Document Number: 001-52934

Orig. of

Change

Submission

Date

Revision

ECN

Description of Change

**

2683316 OGC/PYRS 04/15/2009 New Data Sheet for CY7C65621/31

*A

2937054

STVC

05/25/2010 Rearranged parts under Ordering Information in alphabetical order.

Deleted Figure 7: QFN 8x8mm LF56A with 6.1x6.1 EPAD diagram

Updated Package Diagram.

Updated description for Pins 51 and 53.

Updated links in Sales, Solutions, and Legal Information.

Updated table formats.

*B

*C

2953993

3180356

DSG

ODC

06/16/2010 Removed inactive parts from Ordering Information.

02/23/2011 Removed automotive references from the datasheet since the parts are no

longer active.This includes “Automotive AEC grade option (–40 °C to +85 °C)”

in Features section and “Automotive –40 °C to +85 °C" which appears twice

in Electrical characteristics section.

Added ordering code definitions and units of measure table.

Template updates.

Document #: 001-52934 Rev. *C

Page 26 of 27

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CY7C65621/31

Sales, Solutions, and Legal Information

Worldwide Sales and Design Support

Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office

closest to you, visit us at Cypress Locations.

Products

®

Automotive

cypress.com/go/automotive

cypress.com/go/clocks

cypress.com/go/interface

cypress.com/go/powerpsoc

cypress.com/go/plc

PSoC Solutions

psoc.cypress.com/solutions

PSoC 1 | PSoC 3 | PSoC 5

Clocks & Buffers

Interface

Lighting & Power Control

Memory

cypress.com/go/memory

cypress.com/go/image

cypress.com/go/psoc

Optical & Image Sensing

PSoC

Touch Sensing

USB Controllers

Wireless/RF

cypress.com/go/touch

cypress.com/go/USB

cypress.com/go/wireless

any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for

medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as

critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems

application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign),

United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,

and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress

integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without

the express written permission of Cypress.

Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not

assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where

a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer

assumes all risk of such use and in doing so indemnifies Cypress against all charges.

Use may be limited by and subject to the applicable Cypress software license agreement.

Document #: 001-52934 Rev. *C

Revised February 23, 2011

Page 27 of 27

Windows is a registered trademark of Microsoft Corporation. TetraHub and EZ-USB HX2LP Lite are trademarks of Cypress Semiconductor Corporation. All other product and company names mentioned

in this document are trademarks of their respective holders.

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型号：	CY7C65621-56LTXC
厂家：	CYPRESS
描述：	EZ-USB HX2LP Lite? Low Power USB 2.0 Hub Controller Family EZ -USB HX2LP精简版？低功耗USB 2.0集线器控制器系列控制器
文件：	总27页 (文件大小：562K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

CY7C65621-56LTXC [CYPRESS]

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