CM108AH
DESCRIPTION
A High Integrated USB Audio I/O Controller
FEATURES
Compliant with USB 2.0 Full Speed Operation
Compliant with USB Audio Device Class
Specification v1.0
Remote Wakeup with Volume Control Pins
Embedded USB Transceiver
Supports USB Suspend / Resume Mode and
CM108AH is a highly integrated single chip USB
audio solution. All essential analog modules are
embedded in CM108AH, including dual DAC and
earphone driver, ADC, microphone booster, PLL,
regulator, and USB transceiver. It is very suitable
for USB headset, USB earphone or USB audio
interface box application. Many features are
programmable with jumper pins or external
EEPROM.
In addition, audio adjustment can be easily
controlled via specific HID compliant volume
control pins. For value added application, external
codec or audio DSP can be connected to CM108AH
via I2S pin for further processing.
Single 12MHz Crystal Input with On-chip PLL and
Jumper Pin for Speaker Mode (Playback Only) or
Headset Mode (Playback + Recording)
For Headset Mode, USB Audio Function Topology
has 2 Input Terminals, 2 Output Terminals, 1
Mixer Unit, 1 Selector Unit, and 3 Feature Units
Jumper Pin for Mixer Unit Enable / Disable under
Headset Mode
深
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
Rev. 1.7︱ Page 1/27
圳
市
金
合
讯
科
技
有
限
公
司
，
18
BLOCK DIAGRAM
66
43
41
58
5，
QQ
：
71
44
51
8
19
CMEDIA [ C-MEDIA ELECTRONICS ]
