CM109 Datasheet, PDF (6/36 Pages) C-Media Electronics – USB I/O Controller

CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
z For Speaker Mode, USB audio function topology has 1 Input Terminal, 1 Output
Terminal, and 1 Feature Unit
z Support one Control Endpoint, one Isochroous out Endpoint, one Isochroous in
Endpoint, and one Interrupt in Endpoint
z Alternate zero bandwidth setting for releasing playback bandwidth on USB Bus
when this device is inactive
z Volume up, volume down, and playback mute support USB HID for Host Control
Synchronization
z Record Mute Pin with LED Indicator for Record Mute Status
z External EEPROM Interface for Vendor Specific USB VID, PID, and Serial
Number
z Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM
Data at S/PDIF Output
z 8 GPIO Pins with Read/Write via HID
z Embedded Buzzer Function controlled by Register
z Support I2C Interface for External MCU Integrated
z Jumper Pin for Output Voltage Swing (3.5V or 2.5V)
z Jumper Pin for Power Mode Setting
z Isochroous transfer uses Adaptive Mode with Internal PLL for Synchronization
z 48K/44.1KHz Sampling Rate for both Playback and Recording
z Soft Mute Function
z Embedded High Performance 16 bit audio DAC with Earphone Phone Buffer
z Host side data loss noise reduction function
z Embedded 16 bit ADC input with Microphone Boost
z Embedded power on Reset Block
z Embedded 5V to 3.3V regulator for single External 5V Operation
z Compatible with Win98 SE / Win ME / Win 2000 / Win XP and Mac OS9 / OS X
without Additional Driver
z 48 Pin LQFP Package
z Support Hardware SDK tool for third-party software or soft-phone development
Date: 08/Sep/2005
-5-
Version: 1.3a