• Part: CMI9738
  • Description: 4-Channel Audio Codec
  • Manufacturer: C-Media Electronics
  • Size: 2.09 MB
CMI9738 Datasheet (PDF) Download
C-Media Electronics
CMI9738

Overview

and Overview Versatility CMI9738 is a 4CH AC97 CODEC, applicable for currently mainstream MB chipsets of Intel, VIA, Ali, and SIS. CMI9738 is ideal for PC2001-compliant desktops, notebooks, and home entertainment PCs where high-quality audio is a must. 4CH Playback The specially-designed 4CH hardware architecture of CMI9738 allows all types of south bridge to playback 4CH audio, thus helping commonplace south bridge get rid of the limitation of 2CH audio playback capability (patent pending both in Taiwan and United States).

  • Intel AC’97 Rev 2.2 compatible
  • AC-Link Protocol compliance
  • Full-Duplex Codec
  • Earphone Buffer
  • Line-in/rear out share jack capability As to the cost concern, CMI9738 integrates the
  • 4 channels DAC earphone buffer, analog CD differential interface,
  • 48 LQFP Package and 24-Lead TSSOP and analog switch for rear channel audio to Package Line-in. Simply by using 0.1uf decoupling
  • Meet Microsoft’s  PC2001 requirements capacitor, CMI9738 meets PC2001 frequency
  • Sensaura® 3D Enhancement(optional) response requirements. DataShee Pin Block Diagram LINE_OUT_R LINE_OUT_L NC NC NC NC AFILT2 AFILT1 Vrefout NC AVss1 AVdd1 36 35 34 33 32 31 30 29 28 27 26 25