CM2400 [ETC]
Universal Serial Bus Transceiver with Level Translator ; 通用串行总线收发器，电平转换器\n
| 型号： | CM2400 |
| 厂家： | 
ETC |
| 描述： | Universal Serial Bus Transceiver with Level Translator
|
| 文件： | 总14页 (文件大小：271K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CM2400-01
Universal Serial Bus Transceiver with Level Translator
Features
Product Description
•
•
•
•
•
Complies with USB Specification Rev 1.1 & 2.0
Supports Full Speed Mode (12Mbit/sec.)
Integrated 5V to 3.3V regulator
The CM2400-01HB Universal Serial Bus (USB) trans-
ceiver is fully compliant with the USB specification Rev
1.1 and 2.0. It supports a speed of 12Mbits/s (Full
Speed Mode).
Used as a USB device transceiver
V
disconnection indication through V , V
BUS
P
M
An internal level shifter allows interface to Application
Specific IC's (ASIC's) and Programmable Logic
Devices (PLD's) running at core voltages of 1.65V to
3.3V.
•
•
Two single-ended receivers with hysteresis
USB Detection of V via level translator
BUS
•
•
•
•
•
Stable RCV output during SE0 condition
Low power operation
Supports 1.65V to 3.3V I/O voltage levels
Full industrial operating range -40 to 85 °C
Available in small HBCC16 package
An internal 5V to 3.3V regulator is used to power the
CM2400-01HB USB transceiver via the USB supply
V
. A voltage comparator has been integrated to
BUS
detect the V
voltage via the level translator. This
BUS
insures compatibility with the processor’s core voltage
and outputs to the USB_DET pin. A high level on the
USB_DET output indicates that an active USB cable is
attached. Single and differential input modes are
selectable by a mode input pin (MODE).
Applications
•
•
•
•
Wireless handsets
Digital still cameras
PDAs (Personal Digital Assistants)
IAs (Information Appliances)
This device is ideal for portable electronic devices such
as mobile phones, digital still cameras, PDAs (Personal
Digital Assistants) and IAs (Information Appliances).
The CM2400-01HB is packaged in a small form-factor
16-lead HBCC package to conserve board space.
Simplified Block Schematic
Voltage
Detector
VCC
ENABLE
Voltage
Regulator
V
USB_DET
BUS
V
V
REG
ENUM
OE
PU
V
/FSEO
MO
D+
D-
V
/V
O
PO
MODE
RCV
SPND
V
P
V
M
GND
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1
CM2400-01
PACKAGE / PINOUT DIAGRAM
5
6
7
8
9
SPND
D-
4
3
2
10
11
12
V
D+
V
M
HBCC16
GND
17
V
/V
P
PO
O
RCV
V
/FSEO
MO
1
16 15 14
13
V
OE
REG
HBCC16 Package
Bottom View
Note: This drawing is not to scale.
PIN DESCRIPTIONS
PINS
NAME
DESCRIPTION
1
OE
Input for Output Enable (Active low). Enables transceiver driver to transmit data on the USB bus.
When OE pin = LOW, driver circuitry is enabled.
2
RCV
Differential receiver output of D+ and D- input data lines. The output state of RCV is preserved and
stable during an SE0 condition.
3
4
V
Single-ended D+ receiver output for detection of a single-ended zero or error conditions
Single-ended D- receiver output for detection of a single-ended zero or error conditions.
Suspend input. Allows the device to enter a low power state while the USB is inactive.
P
V
M
5
6
SPND
MODE
Mode input. Selects between differential (V , V ) and single-ended mode (V , FSEO).
PO MO
O
7
V
Supply voltage for digital I/O pins. Voltages supported: 1.65 to 3.3V.
CC
8
9
USB_DET
I/O level USB detect output. Logic High indicates that a USB cable is present.
Negative USB data connection.
D-
10
D+
Positive USB data connection. In full-speed connect mode, connect to V via a 1.5kΩ resistor. Tol-
PU
erance of this resistor is defined in the USB specification REV 1.1 & 2.0
11
12
13
V
/V
PO O
Driver data input.
V
/FSEO Driver data input.
MO
V
Regulated supply voltage output during USB operation of V
. 1uF decoupling capacitor is
REG
BUS
required.
14
15
V
Supply voltage input. Can be directly connected to USB V
.
BUS
BUS
V
Pull-up supply voltage. Pin function is controlled by input ENUM.
PU
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10/01/03
CM2400-01
PIN DESCRIPTIONS
16
17
ENUM
GND
Enumerate, allows software to control connection of the external pull-up via the level translator. If
ENUM = LOW then V is floating. If ENUM = HIGH then V is internally connected to V
.
REG
PU
PU
The ground terminal is connected to the exposed diepad (heatsink).
Ordering Information
PART NUMBERING INFORMATION
1
PADS
Package
Part Marking
Ordering Part Number
16
HBCC16
CM2400-01HB
CMD240001A
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
ESD Protection (HBM, All Pins, See Note 1)
RATING
+2000
UNITS
V
V
V
V
[GND - 0.5] to +5.5
BUS
CC
[GND - 0.5] to +6.0
V
V
V (INPUT)
[GND - 0.5] to [V + 0.5]
I
CC
Storage Temperature Range
-65 to +150
°C
Operating Temperature Range
Junction
-40 to +150
°C
Note 1: Equivalent to discharging a 100pF capacitor via a 1.5kΩ resistor (Human body model).
STANDARD (RECOMMENDED) OPERATING CONDITIONS
SYMBOL
PARAMETER
USB V Supply
MIN
TYP
MAX
UNITS
V
4.1
5.0
5.5
V
BUS
BUS
V
DC System Supply
1.65
0
3.3
3.6
V
V
CC
V
DC Input Voltage
-
-
-
V
CC
I
V
Analog I/O Pins (D+, D-)
Ambient Operating Temperature Range
0
3.6
85
V
I(AI/O)
T
-40
°C
AMB
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3
CM2400-01
Specifications (cont’d)
1
ELECTRICAL OPERATING CHARACTERISTICS
Supply Pins (V
= 4.1V to 5.5V; V = 1.65V to 3.6V)
CC
BUS
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
V
Regulated supply output
Operating supply current
Unloaded
3.0
3.3
3.6
10
V
REG
I
Full-speed TX and RX; C =50pF on
mA
BUS
L
D+/D- outputs
I
Supply current during full
speed idle and SE0
Full-speed idle; Note 2
500
100
µA
µA
BUS(IDLE)
I
Supply current during sus-
pend
SPND = HI; Note 2
BUS(SUSP)
I
Operating I/O supply current Full-speed TX and RX
2.0
mA
µA
µA
CC
I
Static I/O supply current
Full-speed idle, SE0 or suspend
10.0
10.0
CC(STAT)
I
Supply current during shar-
ing mode
V
not connected
CC(SHARE)
BUS
I
D+/D- load current during
sharing mode
V
not connected; ENUMERATE = LOW
10.0
3.6
µA
DX(SHARE)
BUS
V
V
supply detection
Supply lost (USB_D low)
Supply present
V
V
TH(VBUS)
BUS
threshold, USB_D output
4.1
1.4
V
Hysteresis
100
200
mV
TH(BUS)
V
V
supply detection thresh- Supply lost (USB_D low)
0.5
V
V
TH(VCC)
CC
old.
Supply present
Hysteresis
V
mV
TH(VCC)
Digital Pins (V
= 4.1V to 5.5V; V = 1.8V 0.15V)
CC
BUS
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
V
Logic LOW input voltage
Logic HIGH input voltage
Logic LOW output voltage
0.5
V
V
IL
V
V
1.2
IH
I
I
= 100µA
= 2mA
0.15
0.40
V
V
OL
OL
OL
V
Logic HIGH output voltage
I
I
= 100µA
= 2mA
1.50
1.25
V
V
OH
OH
OH
Digital Pins (V
= 4.1V to 5.5V; V = 2.5V 0.2V)
CC
BUS
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
V
Logic LOW input voltage
Logic HIGH input voltage
Logic LOW output voltage
0.7
V
V
IL
V
V
1.7
IH
I
I
= 100µA
= 2mA
0.15
0.40
V
V
OL
OL
OL
V
Logic HIGH output voltage
I
I
= 100µA
= 2mA
2.15
1.90
V
V
OH
OH
OH
Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified.
Note 2: Excluding any load current and VPU/VSW source current to 1.5kΩ and 15kΩpull-up and pull-down resistors (200 µA).
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CM2400-01
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS (CONT’D)
Analog I/O Pins (V
= 4.1V to 5.5V; V = 1.65V to 3.6V)
CC
BUS
SYMBOL PARAMETER
Differential receiver input
CONDITIONS
MIN
TYP MAX UNITS
V
0.2
V
| V (D+) - V (D-) |
DI
I
I
sensitivity
V
Differential receiver
common mode voltage
0.8
2.5
0.8
V
V
V
V
CM
V
Single-ended receiver
logic LOW input voltage
IL
V
Single-ended receiver
logic HIGH input voltage
2.0
0.4
IH
V
Single-ended receiver
Hysteresis voltage
0.7
HYS
V
Logic LOW output voltage
Logic HIGH output voltage
OFF-state leakage current
Transceiver Capacitance
Internal switch resistance at
R = 1.5KΩ tied to +3.6V
0.3
3.6
+1
V
V
OL
OH
LZ
L
V
R = 15KΩ tied to GND
2.8
L
I
µA
pF
Ω
C
Pin to GND
10
30
IN
R
SW
V
PU
Z
Driver output impedance
(includes 33 ohm 1% resis-
tor)
Measured with steady-state drive; See Note 3
33
39
44
Ω
DRV
Driver Characteristics & Timings (Full-speed mode only)
SYMBOL PARAMETER CONDITIONS
C = 50 to 125pF, measured 10% to 90%
MIN
TYP MAX UNITS
t
Rise time
4
20
ns
FR
L
(V -V ); See Figure 6
OH OL
t
Fall time
C = 50 to 125pF, measured 10% to 90%
4
20
ns
FF
L
(V -V ); See Figure 6
OH OL
FRFM
Differential rise / fall time
Excluding the first transition from idle state
90
110
2.0
%
V
matching (t /t
)
FR FF
V
Output signal crossover
voltage
Excluding the first transition from idle state;
See Figure 9
1.3
CRS
t
t
Driver propagation delay (V / LOW-to-HIGH transition; See Figure 9
25
25
ns
ns
PLH(DRV)
PHL(DRV)
O
V
➔ D+/D-, FSEO/V
➔
PO
MO
HIGH-to-LOW transition; See Figure 9
D+/D-
t
t
Driver disable delay
(OE ➔ D+/D-)
HIGH-to-OFF; See Figure 7
LOW-to-OFF; See Figure 7
OFF-to-HIGH; See Figure 7
OFF-to-LOW; See Figure 7
25
25
18
18
ns
ns
ns
ns
PHZ
t
PLZ
Driver enable delay
(OE ➔ D+/D-)
PZH
t
PZL
Note 3: Rev 2.0 states ZDRV must be between 28Ω and 44Ω, when the driver is not high speed capable.
© 2003 California Micro Devices Corp. All rights reserved.
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5
CM2400-01
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS (CONT’D)
Receiver Timings (Full-speed mode only)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
Differential Receiver
t
t
Driver propagation delay
(D+/D- ➔ RCV)
LOW-to-HIGH transition; See Figure 8
HIGH-to-LOW transition; See Figure 8
15
15
ns
ns
PLH(RCV)
PHL(RCV)
Single-ended Receiver
t
t
Driver propagation delay
LOW-to-HIGH transition; See Figure 8
HIGH-to-LOW transition; See Figure 8
15
15
ns
ns
PLH(SE)
PHL(SE)
(D+/D- ➔ V , V )
P
M
Test Loads
Test Point
50pF
Test Point
33Ω
DUT
DUT
15pF
Load for V ,V and
RCV delay measurements
Load for D+ and D- delay measurements
(Max and Min Timing)
P
M
Test Point
33Ω
200Ω
50pF
DUT
V = V
(3.3) for tPZL and tPLZ
REG
V
V = 0 v for tPZH and tPHZ
Load for ENABLE and DISABLE
delay measurements.
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CM2400-01
Performance Information
CM2400-01 Typical DC Characteristics (nominal conditions unless specified otherwise)
300
250
200
150
100
1.00
0.50
0.00
-0.50
-1.00
4.1
4.3 4.5
4.7
4.9
5.1 5.3
5.5
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
VCC VOLTAGE [V]
VBUS VOLTAGE [V]
Figure 3. V
CURRENT in Idle Mode (SPND=LOW)
Figure 1. V Current in Idle Mode (SPND=LOW)
BUS
CC
60.0
55.0
50.0
45.0
40.0
1.00
0.50
0.00
-0.50
-1.00
4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
VBUS VOLTAGE [V]
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
VCC VOLTAGE [V]
Figure 2. V
Current in Suspend Mode
Figure 4. V Current in Suspend Mode
BUS
CC
(SPND=HIGH)
(SPND=HIGH)
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CM2400-01
Performance Information (cont’d)
CM2400-01 Typical AC Characteristics (nominal conditions unless specified otherwise)
Figure 5. Rise and Fall Time Matching
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CM2400-01
Performance Information
CM2400 Timing Diagrams
3.3V
VCRS
INPUT
VCRS
t t
FR, LR
t t
FF, LF
0V
t
t
PHL(RCV)
PLH(RCV)
t
t
PHL(SE)
PLH(SE)
VOH
VOL
90%
90%
VOH
0.9V
OUTPUT
0.9V
10%
10%
VOL
Figure 6. Rise and Fall Timing
Figure 8. D+, D- to RCV, V and V Timing
P
M
1.65V
1.65V
INPUT
0.9V
0.9V
0.9V
INPUT
0.9V
0V
t
PHZ
0V
t
t
PZH
PZL
t
PLZ
t
t
PHL(DRV)
PLH(DRV)
VOH
0.3V
-
VOH
OUTPUT
VCRS
VCRS
VCRS
OUTPUT
0.3V
+
VOL
VOL
Figure 7. OE to D+, D- Timing
Figure 9. V /V , FSEO/V
to D+, D- Timing
O
PO
MO
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CM2400-01
Functional Description
The CM2400-01HB USB Transceiver supports 3 differ-
ent power supply configurations, which can be config-
ured dynamically. Table 1 details the various
configurations. In Normal Mode the internal regulator
sharing mode. In this mode, V and V are driven high
P M
while RCV and USB_DET are driven low.
In Disable and Sharing Mode, all input/output pins fol-
low the states defined in Table 2.
produces 3.3V from V
to power the internal drivers
BUS
and receivers associated with the USB protocol.
Sharing Mode
State
Disable Mode
State
PIN
V
V
CC
CONFIGURATION
Normal Mode
BUS
V
V
< 3.6V
BUS
4.1V to 5.5V
3.3V Out
BUS
Connected
Connected
Connected
Not Connected
Connected
V
Pulled Down
Present
REG
Disable Mode
Sharing Mode
V
Not Present
High-Z (off)
CC
PU
Not Connected
V
High-Z (off)
Table 1: Power Supply Connections
D+, D-
V , V
High-Z
H
High-Z
Invalid
There are three power supply configurations for the
CM2400-01HB: Normal mode, Disable mode and
Sharing mode. These three modes can be changed
dynamically.
P
M
RCV
USB_DET
Inputs
L
L
Invalid
Invalid
High-Z
Normal mode occurs when the V
and V
inputs
BUS
High-Z
CC
are both connected to a source. V
is tied to a 5V
BUS
Table 2: Pin States in Disable or Sharing Mode
source for 5V operation. The internal regulator of the
CM2400-01HB provides 3.3V output on V . The
Table 3 lists the functions of the modes associated with
suspend and OE pins. When Suspend is low and OE is
high, signal levels on D+ and D- are determined by
other USB devices and pull-up/down resistors. In Sus-
pend Mode (SPND = HIGH) the differential receiver is
inactive and output RCV is always LOW. Out of sus-
pend signaling is detected via the single-ended receiv-
ers V and V . During suspend and while the output is
REG
V
input is connected to an independent source that
CC
can range from 1.65V to 3.3V.
When V is not connected and V
is connected,
BUS
CC
the device is in Disable mode. The D+ and D- pins are
in tri-state and power consumption drops to a suspend
state level.
P
M
still enabled (OE = LOW), D+ and D- lines are driven to
their intended states.
In Sharing mode, V
is connected while V
is
BUS
CC
below 3.6V. The D+ and D- pins are in tri-state and the
CM2400 allows external signals (<3.6V) to share these
two lines. The CM2400-01HB is designed to draw
almost zero current from the D+ and D- lines while in
V /V
SUSPEND OE
D+ / D-
Driver & Receiver Active
Receiving
RCV
Active
Active
Function
P
M
L
L
L
H
L
Active
Active
Normal driving mode. Differential receiver active
Driver Tri-stated. Differential receiver active.
H
Driving
Inactive
RCV=L
Active Driving during ’suspend’. Differential receiver inactive.
H
H
High-Z
Inactive
RCV=L
Active Low-power state.
Table 3: Function Selection.
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CM2400-01
Functional Description (cont’d)
Detailed in Table 4 and Table 5 are the operating
modes selected when MODE is set to LOW and HIGH.
When MODE = HIGH, the differential input data inter-
face mode is selected. The two driver inputs function
Detection of a V
voltage is accomplished via an
BUS
internal Comparator with hysteresis. The output from
this Comparator is fed via the level translator to ensure
compatibility with processor core voltages and output
as V
and V . When MODE = LOW, the single-
to pin USB_DET. When V
is over 4.1V, USB_DET
MO
PO
BUS
ended input data interface mode is selected. The two
is HIGH. When V
is under 3.6V, USB_DET is LOW.
BUS
driver inputs function as FSE0 and V .
O
The CM2400-01HB USB transceiver includes an enu-
meration pin (ENUM) which internally connects V to
PU
V
V
when enabled. This allows a processor running
MODE
FSE0
Result
Logic ‘0’
SE0
O
REG
at a core voltage different than 3.3V to switch the pull-
up resistor in and out without the need for external cir-
cuitry.
L
L
L
H
L
(single-ended)
L
H
H
Logic ‘1’
SE0
H
Table 4: Operating Mode (OE = L)
V
MODE
FSE0
Result
SE0
O
H
L
L
H
L
(differential)
L
H
H
Logic ‘0’
Logic ‘1’
Undefined
H
Table 5: Operating Mode (OE = L)
Table 6 details the receiving function when OE is HIGH
(driver disabled). RCV denotes the signal level on the
output RCV just before an SE0 state occurs. This level
is stable during the SE0 period.
V
V
M
D+/D-
Differential Logic ’0’
Differential Logic ’1’
SE0
RCV
L
P
L
H
H
H
L
L
L
RCV*
Table 6: Receiving Function (SPND = L)
Note 1: Denotes RCV is stable in last state before
SE0 condition.
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11
CM2400-01
Application Information
The CM2400-01 transceiver is targeted for full-speed
(12Mbits/s) USB peripherals including handheld elec-
tronic devices such as PDAs and cell phones. It pro-
vides the interface between the core I/O signals (within
a range of 1.65V and 3.6V) and the USB data lines (D+
and D-) operating at 3.3V.
nects V from V
when ENUM is set Low.
(V floating or high impedance)
REG PU
PU
CAMD offers the PACUSB-U2 filter, available in both
the SC70 and SOT23 6-lead packages, that integrates
all these components as well as the additional ESD
protection rated to 15kV per the IEC61000-4-2 stan-
dard (exceeding level 4). Figure 10 shows a typical
electrical schematic for a USB peripheral application.
This section describes how the USB transceiver inter-
faces to the USB port and to the controller or ASIC on
the other side. A small number of external components
is needed that includes two 33Ω series resistors for ter-
mination, two capacitors for filtering, and a 1.5KΩ pull-
up resistor on the D+ data line to configure full-speed
(12Mbits/second) operation. This pull-up resistor is tied
The driver output resistance for the full-speed driver,
should be between 28Ω and 44Ω (refer to the USB
Specification section 7.1.1.1). Since the CM2400-01
output impedance is about 6Ω, it is recommended that
33Ω series resistors be used.
to the V pin which internally connects to V
(3.3V)
PU
REG
when ENUM is set High. An internal switch discon-
Figure 10. Schematic for USB Peripheral Device
•
•
The MODE pin selects the differential receiver
•
The V supply pin is the supply for the I/O signal
CC
logic that provide the interface with the ASIC. The
mode when High (CMOS level or V ), and selects
CC
the single-ended receiver mode when Low (con-
nected to GND).
The CM2400-01 is used in bus-powered systems
V
supply must range between 1.65V min and
CC
3.6V max.
only, where the V
supply pin is connected to
BUS
the +5V V
line from the USB connector.
BUS
© 2003 California Micro Devices Corp. All rights reserved.
12 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
ꢀ
Tel: 408.263.3214
ꢀ
Fax: 408.263.7846
ꢀ
www.calmicro.com
10/01/03
CM2400-01
Application Information (cont’d)
The CM2400-01HB includes an internal 3.3V LDO that
powers the transceiver from the V
. A capacitor (1µF
BUS
typical) is required on the regulator output (V
pin).
REG
This output can only be used to power a limited exter-
nal load of a few milliamperes (mA). For USB-powered
peripheral applications, the 5V V
line can be regu-
BUS
lated down to 3.3V or a lower voltage as shown in
Figure 10, using a CM3019 regulator. This regulator
provides excellent line and load regulation as well as
current limit and thermal overload protection.
The USB specification recommends the use of a 1µF to
10µF capacitor to be connected to the 5V V
.
BUS
Please contact factory at 800-325-4966 to request on
the availability of evaluation boards.
© 2003 California Micro Devices Corp. All rights reserved.
10/01/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ꢀ Tel: 408.263.3214
ꢀ
Fax: 408.263.7846
ꢀ
www.calmicro.com
13
CM2400-01
Mechanical Details
The CM2400-01HB is available in a 16-pin HBCC
package.
Mechanical Package Diagrams
HBCC16 Mechanical Specifications
TOP VIEW
Dimensions for CM2400-01HB devices packaged in
16-pin HBCC packages are presented below.
A
D
13
9
A1
PACKAGE DIMENSIONS
Package
Pins
HBCC16
16
E
Millimeters
Min Max
Inches
Max
Dimensions
Min
A
-
0.80
0.10
0.0315
0.0039
1
5
A
0.05
1
1
2
3
b
b
b
0.25
0.30
0.30
0.35
0.40
0.40
0.0138
0.0157
0.0157
SIDE VIEW
D
2.90
1.45
3.10
1.55
0.1220
0.0610
BOTTOM VIEW
D
h
e1
Dh
e
E
2.90
1.75
3.10
1.85
0.1220
0.0728
E
h
13
9
e
0.50 TYP.
0.0197 TYP.
e
e
e
e
2.50 TYP.
2.50 TYP.
2.45 TYP.
2.45 TYP
0.0984 TYP.
0.0984 TYP.
0.0965 TYP.
0.0965 TYP.
1
2
3
4
e
e4
Eh
e2
1/2 e4
5
1
# per tube
120 pieces*
2500 pieces
16
Detail C
# per tape
and reel
Detail B
1/2 e3
Detail A
e3
Controlling dimension: millimeters
* This is an approximate number which may vary.
CONTACT (PIN) DIMENSIONS
CF#0.20x45ο
b
b
b
3
2
1
b
b
b
2
3
1
Detail A
Detail B
Detail C
Dimensions for HBCC16 Package
© 2003 California Micro Devices Corp. All rights reserved.
14 430 N. McCarthy Blvd., Milpitas, CA 95035-5112
ꢀ
Tel: 408.263.3214
ꢀ
Fax: 408.263.7846
ꢀ
www.calmicro.com
10/01/03
相关型号：
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