CM6631A Datasheet, PDF (5/16 Pages) C-Media Electronics – USB 2.0 High-Speed True HD Audio Processor

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