CM108 Datasheet, PDF (6/29 Pages) C-Media Electronics – USB Audio I/O Controller

CM108
Integration Dual DAC, Earphone Driver, ADC,
Microphone Booster, PLL, Regulator, and USB Transceiver
Alternate Zero Bandwidth Setting for Releasing Playback Bandwidth on USB Bus when
this Device is Inactive
Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM Data at
S/PDIF Output
Volume Up, Volume Down, and Playback Mute Pins support USB HID device class for
Host Control Synchronization
Record Mute Pin with LED Indicator for Record Mute Status
External EEPROM Interface for Vendor Specific USB VID, PID, and Serial Number
EEPROM Write Function via Vendor Specific request for Mass Production
Convenience
Customized Embedded VID, PID, and Product String by Customer Request
4 GPIO Pins with Read/Write via HID Interface
Jumper Pin to Set the Output Voltage Swing (3.5V or 2.5V)
Jumper Pin to Set the Power Mode (100mA or 500mA, Bus Power or Self Power)
Isochronous Transfer uses Adaptive Mode with Internal PLL for Synchronization
48K / 44.1KHz Sampling Rate for Both Playback and Recording
Soft Mute Function
Embedded High Performance 16-Bit Audio DAC with Earphone Phone Amplifier
Host Side Data Loss Noise Reduction Function
Embedded 16-Bit ADC Input with Microphone Boost
Embedded Power-On-Reset Block
Embedded 5V to 3.3V Regulator for Single External 5V Operation
Compatible with Win98 SE / Win ME / Win 2000 / Win XP and Mac OS9 / OS X without
Additional Driver
48 Pin LQFP Package
Date: Nov/01/2004
-5-
Version: 1.5