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PDF CM6631A Data sheet ( Hoja de datos )

Número de pieza CM6631A
Descripción USB 2.0 High-Speed True HD Audio Processor
Fabricantes C-Media　
Logotipo C-Media Logotipo



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CM6631A
USB 2.0 High-Speed True HD Audio Processor
DESCRIPTION
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.
BLOCK DIAGRAM
Self-Power
GPIO/JD
FEATURES
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
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
PDSW
Bus-Power
3.3V-to-2.5V
Regulator
GPIO Interface
Master I2C
Interface
Slave I2C
Interface
Local Address Data Bus
Parallel
EEPROM/Flash
Interface
MIDI
I/O
Port
Power-On
Reset
Interrupt
Processor
Control
Processor
8051 Processor
USB D+/D-
USB2.0
Transceiver
Interface
(UTMI)
12MHz
Optional
45.158M
and
49.152MHz
PLL
Clock-
Generator
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
USB
Core
Logic
Command Bus
Data Bus
PDMA_B (SPO)
PDMA_C (2CH)
PDMA_A (2CH)
RDMA_A (2CH)
RDMA_B (2CH)
RDMA_C (SPI)
FIFO
Rev. 1.0︱ Page 1/16
S/PDIF Out
2CH I2S/HDA-
Out
2CH
I2S/HDA-Out
Controller
2CH I2S/
HDA-In
Controller
2CH
I2S/HDA-In
Controller
S/PDIF IN

1 page




CM6631A pdf
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

5 Page





CM6631A arduino
CM6631A
USB 2.0 High-Speed True HD Audio Processor
36 X2ADC_LRCK
37 X2ADC_MCLK
38 XSPDIFO_0
40 XSPDIFI_0
DIO
I2S left/right clock
Programmable 3.3V bidirectional buffer, pull-down
DO
I2S master clock
Programmable 3.3V output buffer
S/PDIF I/O
DO
S/PDIF transmitter
Programmable 3.3V output buffer
DI
S/PDIF receiver
3.3v input buffer, Schmitt trigger, pull-down
Parallel EEPROM/Flash Memory Interface
41 XPEE_D0
42 XPEE_D1
43 XPEE_D2
44 XPEE_D3
45 XPEE_D4
46 XPEE_D5
47 XPEE_D6
48 XPEE_D7
82 XPEE_CEN
83 XPEE_WRN
84 XPEE_RDN
65 XPEE_A0
66 XPEE_A1
67 XPEE_A2
68 XPEE_A3
69 XPEE_A4
70 XPEE_A5
71 XPEE_A6
72 XPEE_A7
74 XPEE_A8
75 XPEE_A9
76 XPEE_A10
77 XPEE_A11
78 XPEE_A12
79 XPEE_A13
DIO
Parallel EEPROM/FLASH data in/out 0
Programmable 3.3V bidirectional buffer, pull-down
DIO
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
DO
Parallel EEPROM/FLASH chip enable, active low
Programmable 3.3V output buffer
DIO
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
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.0︱ Page 11/16

11 Page







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