概述
数据手册CM6631A 概述
USB 2.0 High-Speed True HD Audio Processor
CM6631A 数据手册
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PDF下载CM6631A
USB 2.0 High-Speed True HD Audio Processor
DESCRIPTION
FEATURES
Cmedia CM6631A is a USB2.0 true high-speed audio
processor that can support the latest USB Audio
Device Class Definition V2.0 and high-definition
audio processing capability up to 192KHz/32bit.
CM6631A provides the industrial standard I2S and
HDA audio interface and also integrates
USB Spec. Rev.2.0 high-speed/full-speed mode
compatible
Latest USB Audio Device Class Definition Release
v.2.0/1.0 compatible
USB Human Interface Device (HID) Class
Definition Release 1.1 compliant
Supports USB suspend/resume/reset functions
Supports control, interrupt, bulk, and
isochronous data transfers
192KHz/24bit S/PDIF transmitter/receiver and
MIDI I/O device. It’s suitable for versatile,
high-profile, typical 2-channel I/O audio
applications. Furthermore, CM6631A has an
embedded 8051 microprocessor that can enhance
the best flexibility and functionality with external
upgradeable F/W codes. CM6631A would be the
most high-fidelity and powerful audio core for
high-value USB2.0 audio products.
2 pairs I2S or Left-Justified serial audio output
/input interface
I2S input/output support
192K/176.4K/96K/88.2K/48K/44.1KHz and
16/24/32-bit
Built-in 192K/176.4K/96K/88.2K/48K/44.1KHz
and 16/24-bit S/PDIF transceiver
Supports S/PDIF IN-to-OUT loop-back path for
signal transforming between TOSLINK and RCA
connections
BLOCK DIAGRAM
GPIO/JD
PDSW
Self-Power
Parallel
Master I2C
Interface
Slave I2C
EEPROM/Flash
Interface
Interface
GPIO Interface
Bus-Power
3.3V-to-2.5V
Regulator
MIDI
I/O
Port
Local Address Data Bus
Interrupt
Processor
Power-On
Reset
Control
Processor
8051 Processor
Command Bus
USB2.0
Transceiver
Interface
(UTMI)
S/PDIF Out
USB D+/D-
FIFO
Data Bus
2CH I2S/HDA-
Out
PDMA_B (SPO)
2CH
I2S/HDA-Out
Controller
USB
Core
Logic
PDMA_C (2CH)
PDMA_A (2CH)
2CH I2S/
HDA-In
12MHz
Controller
PLL
Clock-
Generator
2CH
I2S/HDA-In
Controller
RDMA_A (2CH)
RDMA_B (2CH)
RDMA_C (SPI)
Optional
45.158M
and
S/PDIF IN
49.152MHz
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 1/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
Release Note
Revision
0.1
Date
Description
2012/05/04
2012/06/20
2012/07/24
-preliminary
0.2
-update GPIO mapping
0.3
-add optional sound effect
-update power consumption value
-re-organize chapter order
0.31
0.32
2012/08/01
2012/09/28
-add I2S support master/slave description
-add 24.576 and 22.5792 clock input
-Formal released
1.0
2012/10/25
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 2/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
TABLE OF CONTENTS
Release Note ............................................................................................................................................ 2
1
2
3
4
5
Description and Overview ............................................................................................................... 4
Features ............................................................................................................................................ 4
Applications ..................................................................................................................................... 7
Block Diagram ................................................................................................................................. 8
Pin Assignment ................................................................................................................................ 9
5.1
5.2
Pin-Out Diagram................................................................................................................. 9
Pin Description.................................................................................................................. 10
6
7
Electrical Characteristics................................................................................................................ 14
6.1
6.2
6.3
6.4
Maximum Ratings............................................................................................................. 14
Recommended Operation Conditions............................................................................... 14
Power Consumption.......................................................................................................... 14
DC Characteristics ............................................................................................................ 14
Package Dimension........................................................................................................................ 15
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Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 3/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
1 Description and Overview
Cmedia CM6631A is a USB2.0 true high-speed audio processor that can support the latest USB Audio Device
Class Definition V2.0 and high-definition audio processing capability up to 192KHz/32bit. CM6631A provides
the industrial standard I2S and HDA audio interface and also integrates 192KHz/24bit S/PDIF
transmitter/receiver and MIDI I/O device. It’s suitable for versatile, high-profile, typical 2-channel I/O audio
applications. Furthermore, CM6631A has an embedded 8051 microprocessor that can enhance the best
flexibility and functionality with external upgradeable F/W codes. CM6631A would be the most high-fidelity
and powerful audio core for high-value USB2.0 audio products.
2 Features
USB Compliance
USB Spec. Rev.2.0 high-speed/full-speed mode compatible
Latest USB Audio Device Class Definition Release v.2.0/1.0 compatible
USB Human Interface Device (HID) Class Definition Release 1.1 compliant
Supports USB suspend/resume/reset functions
Supports control, interrupt, bulk, and isochronous data transfers
Asynchronous synchronization transfer to reduce clock jitter
Audio Engine
Max. 3 Independent Playback Streams:
Default Sample Rates: 192K/176.4K/96K/88.2K/48K/44.1KHz (192K/176.4KHz are available only in
USB Audio Class 2.0/High-speed mode)
Supported Bit Length: 16/24/32 bit
PDMA#A and C engines support 2-channel data to I2S/HDA output
PDMA#B supports S/PDIF output
Max. 3 Independent Capture Streams:
Default Sample Rates: 192K/176.4K/96K/88.2K/48K/44.1KHz (192K/176.4KHz are available
only in USB Audio Class
2.0/High-speed mode)
Supported Bit Length: 16/24/32 bit
RDMA#A and B support 2-channel data from I2S/HDA input
RDMA#C supports S/PDIF input (192KHz is supported only with Crystal and PLL clock source)
Digital mixing/routing engine to mix input streams to output streams
Audio I/O
2 pairs I2S or Left-Justified serial audio output interface
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Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 4/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
2 pairs I2S or Left-Justified serial audio input interface
All the I2S input/output support master/slave mode
Built-in 192K/176.4K/96K/88.2K/48K/44.1KHz and 16/24-bit S/PDIF transmitter
Integrated 192K/176.4K/96K/88.2K/48K/44.1 and 16/24-bit S/PDIF receiver
Supports S/PDIF IN-to-OUT loop-back path for signal transforming between TOSLINK and RCA connections
Integrated 8051 Micro-processor
Embedded 8051 micro-processor to handle the comment/protocol transactions
Connects to an external parallel Flash/EEPROM memory (Max. 64KB, 55ns access time is required) for
firmware codes
HID interrupts can be implemented via firmware codes
Provides maximum HW configuration flexibility with firmware code upgrade
VID/PID/Product String can be customized via firmware code programming
Control Interface
Master I2C control interface for external audio devices or EEPROM access
Slave I2C control interface and interrupt pin for external MCU/device communication
9 GPIO pins and 6 GPI pins
External device power-down control and reset pins
General
Embedded USB2.0 transceiver (up to 480MB bandwidth)
Auto detection for high-speed/full-speed
GPIO pin for USB Audio Class 2.0 and 1.0 application mode configuration
Provides Self-power or Bus-power mode selection pin
Only single 12MHz crystal input is required (embedded PLL function) or optional oscillator inputs for
49.152/24.576MHz(for x48KHz) and 45.1584/22.5792MHz (for x44.1KHz)
Single 3.3V power supply (embedded 3.3V to 2.5V regulator for digital core)
3.3V digital I/O pads with 5V tolerance
Industrial standard LQFP-100 package (16x16mm)
Optional Value-added Software Features:
Cmedia vendor drivers supports USB Audio Class 2.0 and high-speed mode on Windows® XP, Windows®
Vista, Windows® 7, Windows® 8 and Mac OS X 10.5.7 (or later) with Cmedia vendor drivers
USB audio class 1.0 with full-speed/high-speed modes compatible with the Windows® XP, Windows® Vista,
Windows® 7 and Windows® 8 UAA driver, Mac OS X and Linux embedded USB audio drivers
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 5/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
For Windows, Cmedia drivers provide the following key features:
Playback feedback endpoints to control data transmission accuracy and maximize audio quality
Xear™ Pro
Support ASIO2.2 driver
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 6/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
3 Applications
True HD USB DAC
USB2.0 Headphone Amplifier
Professional PC musician applications (recording interface, console, electrical guitar, etc.)
Consumer stereo systems with embedded USB audio (Boom Box, portable CD/FM/MP3 players, Stereo
Amplifier, etc.)
ExpressCard compatible USB2.0 audio adaptor
High-Fidelity USB2.0 wireless Headset
High-Fidelity USB2.0 2CH headphone
High-quality USB2.0 audio/gaming headset
USB2.0 VideoCam or Video Capture Box with mic/audio features
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Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 7/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
4 Block Diagram
CM6631A Functional Block Diagram
GPIO/JD
PDSW
Self-Power
Parallel
EEPROM/Flash
Interface
Master I2C
Interface
Slave I2C
Interface
GPIO Interface
Bus-Power
3.3V-to-2.5V
Regulator
MIDI
I/O
Port
Local Address Data Bus
Interrupt
Processor
Power-On
Reset
Control
Processor
8051 Processor
Command Bus
USB2.0
Transceiver
Interface
(UTMI)
S/PDIF Out
USB D+/D-
FIFO
Data Bus
2CH I2S/HDA-
Out
PDMA_B (SPO)
2CH
I2S/HDA-Out
Controller
USB
Core
Logic
PDMA_C (2CH)
PDMA_A (2CH)
2CH I2S/
HDA-In
12MHz
Controller
PLL
Clock-
Generator
2CH
I2S/HDA-In
Controller
RDMA_A (2CH)
RDMA_B (2CH)
RDMA_C (SPI)
Optional
45.158M
and
S/PDIF IN
49.152MHz
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Copyright © C-Media Electronics Inc.
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CM6631A
USB 2.0 High-Speed True HD Audio Processor
5 Pin Assignment
5.1 Pin-Out Diagram
XPEE_A10
XPEE_A11
XPEE_A12
XPEE_A13
XPEE_A14
XPEE_A15
XPEE_CEN
XPEE_WRN
XPEE_RDN
X2DAC_MCLK
X2DAC_LRCK
X2DAC_SCLK
X2DAC_SDOUT
XMDAC_SDOUT0
NC
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
XGPIO_9
XGPIO_8
XPEE_D7
XPEE_D6
XPEE_D5
XPEE_D4
XPEE_D3
XPEE_D2
XPEE_D1
XPEE_D0
XSPDIFI_0
GND
CM6631A
LQFP 100
XPDIFO_0
X2ADC_MCLK
X2ADC_LRCK
X2ADC_SCLK
X2ADC_SDIN
XMADC_LRCK
XMADC_MCLK
XMADC_SCLK
XMADC_SDIN0
VCC3V
NC
NC
XMDAC_SCLK
XMDAC_LRCK
XMDAC_MCLK
XSELF_POWER
XVCC3V
XRST
XHDA_SDO
XHDA_RST
XHDA_SYNC
XTEST
XSCI
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Copyright © C-Media Electronics Inc.
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CM6631A
USB 2.0 High-Speed True HD Audio Processor
5.2 Pin Description
Pin #
Symbol
I/O
Description
Clock
1
XSCO
XSCI
XD6
AO
AI
12MHz crystal oscillator output
100
20
12MHz crystal oscillator input
DIO
DIO
49.152Mhz oscillator input(for 48, 96,192KHz)
45.158Mhz oscillator input(for 44.1KHz)
21
XD7
USB2.0 BUS Interface
5
6
USBDM
USBDP
AIO
AIO
USB 2.0 data negative (USB D- signal)
USB 2.0 data positive (USB D+ signal)
Power/Ground
2
VCCHSRT
GNDHSRT
VCCA_U20
GNDA_U20
VCC3V
VCC
AI
AI
AI
A
USB PHY analog power supply pin (3.3V)
USB PHY analog ground
3
7
USB PHY analog power supply pin (3.3V)
USB PHY analog ground
8
9
DI
DO
D
Digital power supply pin (3.3V)
Digital power filter pin (2.5V), connecting external filter capacitors
Digital Ground
10
11
18
29
39
53
61
73
97
GND
GND
D
Digital Ground
VCC3V
GND
DI
D
Digital power supply pin (3.3V)
Digital Ground
VCC3V
GND
DI
D
Digital power supply pin (3.3V)
Digital Ground
VCC3V
VCC3V
DI
DI
Digital power supply pin (3.3V)
Digital power supply pin (3.3V)
2-channel I2S ADC_1 Interface (RDMA_A)
I2S serial data input for channel 0, 1
DI
30
31
32
33
XMADC_SDIN0
XMADC_SCLK
XMADC_MCLK
XMADC_LRCK
Programmable 3.3V input buffer, Schmitt trigger, pull-down
I2S bit clock
DIO
Programmable 3.3V bidirectional buffer, pull-down
I2S master clock
Programmable 3.3V output buffer
DO
I2S left/right clock
Programmable 3.3V bidirectional buffer, pull-down
DIO
2-channel I2S ADC_2 Interface (RDMA_C)
I2S serial data input for channel 0, 1
DI
34
35
X2ADC_SDIN
X2ADC_SCLK
Programmable 3.3V input buffer, Schmitt trigger, pull-down
I2S bit clock
DIO
Programmable 3.3V bidirectional buffer, pull-down
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CM6631A
USB 2.0 High-Speed True HD Audio Processor
I2S left/right clock
Programmable 3.3V bidirectional buffer, pull-down
I2S master clock
36
37
X2ADC_LRCK
X2ADC_MCLK
DIO
DO
Programmable 3.3V output buffer
S/PDIF I/O
S/PDIF transmitter
Programmable 3.3V output buffer
S/PDIF receiver
38
40
XSPDIFO_0
XSPDIFI_0
DO
DI
3.3v input buffer, Schmitt trigger, pull-down
Parallel EEPROM/Flash Memory Interface
Parallel EEPROM/FLASH data in/out 0
DIO
41
42
43
44
45
46
47
48
82
83
84
65
66
67
68
69
70
71
72
74
75
76
77
78
79
XPEE_D0
XPEE_D1
XPEE_D2
XPEE_D3
XPEE_D4
XPEE_D5
XPEE_D6
XPEE_D7
XPEE_CEN
XPEE_WRN
XPEE_RDN
XPEE_A0
XPEE_A1
XPEE_A2
XPEE_A3
XPEE_A4
XPEE_A5
XPEE_A6
XPEE_A7
XPEE_A8
XPEE_A9
XPEE_A10
XPEE_A11
XPEE_A12
XPEE_A13
Programmable 3.3V bidirectional buffer, pull-down
Parallel EEPROM/FLASH data in/out 1
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH data in/out 2
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH data in/out 3
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH data in/out 4
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH data in/out 5
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH data in/out 6
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH data in/out 7
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH chip enable, active low
Programmable 3.3V output buffer
DO
Parallel EEPROM/FLASH write enable, active low
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH read enable, active low
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 0
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 1
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 2
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 3
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 4
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 5
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 6
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 7
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 8
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 9
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 10
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 11
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 12
Programmable 3.3V bidirectional buffer, pull-down
DIO
Parallel EEPROM/FLASH address 13
Programmable 3.3V bidirectional buffer, pull-down
DIO
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CM6631A
USB 2.0 High-Speed True HD Audio Processor
Parallel EEPROM/FLASH address 14
Programmable 3.3V bidirectional buffer, pull-down
Parallel EEPROM/FLASH address 15
80
81
XPEE_A14
XPEE_A15
DIO
DIO
Programmable 3.3V bidirectional buffer, pull-down
GPI
General purpose input 0
Programmable 3.3V input buffer, Schmitt trigger, pull-down
General purpose input 1
Programmable 3.3V input buffer, Schmitt trigger, pull-down
General purpose input 2
Programmable 3.3V input buffer, Schmitt trigger, pull-down
General purpose input 3
Programmable 3.3V input buffer, Schmitt trigger, pull-down
General purpose input 4
Programmable 3.3V input buffer, Schmitt trigger, pull-down
General purpose input 5
12
13
14
15
16
17
XGPI_0
XGPI_1
XGPI_2
XGPI_3
XGPI_4
XGPI_5
DIO
DIO
DIO
DIO
DIO
DIO
Programmable 3.3V input buffer, Schmitt trigger, pull-down
GPIO
General purpose input/output 0 (default output).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 1 (default output).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 2 (default output).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 3 (default input).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 4 (default input).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 5 (default input).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 6 (default input).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 6 (default input).
54
49
50
51
52
58
59
60
62
XGPIO_7
XGPIO_8
XGPIO_9
XGPIO_10
XGPIO_11
XGPIO_12
XGPIO_13
XGPIO_14
XGPIO_15
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DIO
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
General purpose input/output 6 (default input).
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
MIDI Interface
MIDI RXD, Serial input port
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
MIDI TXD, Serial output port
22
23
XD0
XD1
DIO
DIO
Programmable 3.3V/5V tolerance bidirectional buffer, pull-down
High-Definition Audio Interface
HDA link bit clock (24MHz)
Programmable 3.3V output buffer
HDA link serial data in
Programmable 3.3V bidirectional buffer, pull-down
HDA link frame synchronization
Programmable 3.3V output buffer
HDA link reset signal, active low
Programmable 3.3V output buffer
HDA link serial data out
24
25
26
27
28
XHDA_BCLK
XHDA_SDI
DO
DI
XHDA_SYNC
XHDA_RST
XHDA_SDO
DO
DO
DO
Programmable 3.3V output buffer
2-channel I2S DAC_2 Interface (PDMA_C)
I2S master clock
DO
85
86
X2DAC_MCLK
X2DAC_LRCK
Programmable 3.3V output buffer
I2S left/right clock
DIO
Programmable 3.3V bidirectional buffer, pull-down
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CM6631A
USB 2.0 High-Speed True HD Audio Processor
I2S bit clock
87
88
X2DAC_SCLK
DIO
DO
Programmable 3.3V bidirectional buffer, pull-down
I2S serial data output for channel 0, 1
Programmable 3.3V output buffer
X2DAC_SDOUT
2-channel I2S DAC_1 Interface (PDMA_A)
I2S serial data output for channel 0, 1
DO
89
93
94
95
XMDAC_SDOUT0
XMDAC_SCLK
XMDAC_LRCK
XMDAC_MCLK
Programmable 3.3V output buffer
I2S bit clock
DIO
Programmable 3.3V bidirectional buffer, pull-down
I2S left/right clock
Programmable 3.3V bidirectional buffer, pull-down
DIO
I2S master clock
Programmable 3.3V output buffer
DO
2-Wire Master Serial Bus (I2C)
2-wire master serial data
DIO
63
64
XMSDA
XMSCL
Programmable 3.3V/5V tolerant bidirectional buffer, pull-down
2-wire master serial clock
DIO
Programmable 3.3V/5V tolerant bidirectional buffer, pull-down
2-Wire Slave Serial Bus (I2C)
2-wire slave serial data
DIO
56
57
XSSDA
XSSCL
Programmable 3.3V/5V tolerant bidirectional buffer, pull-down
2-wire slave serial clock
DIO
Programmable 3.3V/5V tolerant bidirectional buffer, pull-down
Miscellaneous
Connect external reference resistor (12K1%)
4
RREF
AI
External device power down control signal (default tri-state)
Programmable 3.3V/5V tolerance output buffer
External codec reset (default tri-state)
Programmable 3.3V/5V tolerance output buffer
Self Power used, 1:self power, 0:bus power
19
XPWDN
DO
55
96
XRSTO
DO
DI
XSEL_PWR
Programmable 3.3V input buffer, Schmitt trigger, Pull-down
CM6631A chip reset
98
99
XRST
DI
DI
Test Mode Select Pin:
H: Test Mode
XTEST
L: Normal Operation
NC
No connecting
No connecting
No connecting
90
91
92
NC
NC
NC
DI
DI
DI
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CM6631A
USB 2.0 High-Speed True HD Audio Processor
6 Electrical Characteristics
6.1 Maximum Ratings
Test Conditions; VDD = 3.3V, DGND =0V, TA=+25oC
Parameter
Storge temperature
Symbol
Min
-55
0
Typ
-
Max
150
75
Units
oC
-
-
-
-
-
Operating ambient temperature
DC supply voltage
25
oC
3.0
GND
-
3.3
-
3.6
VDD
-
V
I/O pin voltage
V
Power dissipation
0.15
W
6.2 Recommended Operation Conditions
o
Test Conditions: VDD = 3.3V, DGND =0V, TA=+25 C
Parameter
Input voltage range
Symbol
Min
VDD-0.3
0
Typ
VDD
-
Max
VDD+0.3
VDD
Units
-
-
V
V
Output voltage range
6.3 Power Consumption
o
Test Conditions: DVDD = 3.3V, DGND =0V, TA=+25 C
Parameter
Supply current : power up
Supply current : power down
Symbol
Min
Typ
79.8
1.91
Max
Units
mA
-
-
-
-
-
-
mA
6.4 DC Characteristics
o
Test Conditions: DVDD = 3.3V, DGND =0V, TA=+25 C
Parameter
Input voltage range
Symbol
Min
VDD-0.3
0
Typ
Max
Units
V
Vin
Vout
Vih
Vil
Voh
Vol
Iil
VDD
-
VDD+0.3
Output voltage range
VDD
V
High level input voltage
Low level input voltage
High level output voitage
Low level output voltage
Input leakage current
0.7VDD
-
-
-
V
-
0.3VDD
V
2.4
-
-
0.4
10
10
-
V
-
V
-10
-10
-
-
uA
uA
mA
mA
Output leakage current
Output buffer driver current
SPDIF transmit output driver current
Iol
-
-
8
8
-
-
-
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 14/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
7 Package Dimension
LQFP-100 (16x16mm)
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 15/16
CM6631A
USB 2.0 High-Speed True HD Audio Processor
－End of Specifications－
C-MEDIA ELECTRONICS INC.
6F., 100, Sec. 4, Civil Boulevard, Taipei, Taiwan 106 R.O.C.
TEL：+886-2-8773-1100
FAX：+886-2-8773-2211
E-MAIL：sales@cmedia.com.tw
Disclaimer:
Information furnished by C-Media Electronics Inc. is believed to be accurate and reliable. However, no responsibility is assumed by C-Media Electronics Inc. for its use, nor for any
infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise
under any patent or patent rights of C-Media. Trademark and registered trademark are the property of their respective owners.
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 16/16
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