Hello! I have a Synaptics AudioSmart 4-Mic Development Kit , but there are no datasheets for their chips. Specifically: CX20924 & CX22721. Please help me identify pins or find datasheets.

 

Hmm it looks like they are purposly avoiding issuing data sheets on thier chips.. rather stingy of them!

 

20924
22721
Very hard to find anything

 

Hello,

The CX22721 is a codec : https://search.yahoo.com/search?n=10&ei=UTF-8&va_vt=any&vo_vt=any&ve_vt=any&vp_vt=any&vst=0&vf=all&vm=i&fl=0&fr=altavista&p="CX22721"&vs=
The CX20924 is a voice processor : https://search.yahoo.com/search?n=10&ei=UTF-8&va_vt=any&vo_vt=any&ve_vt=any&vp_vt=any&vst=0&vf=all&vm=i&fl=0&fr=altavista&p="CX20924"&vs=

Bertus

 

Thank you guys, i saw those things, but i need some like it: http://ww1.microchip.com/downloads/en/DeviceDoc/20005202A.pdf

 

Something:
https://github.com/conexant/codec_drivers/wiki/CX2X72x-Porting-Guide
And googling cx2x72x porting guide found this:
https://www.synaptics.com/sites/default/files/audiosmart-4mic-dev-kit-user-guide.pdf
using Synaptics' site search for audiosmart found this page:
https://www.synaptics.com/partners/amazon/ds20924