CYW920819 i2s routing for microphone via a2dp

Ask the Community
Close
Ask the Community
nav search Icon
Forums gray-arrow gray-arrow
Resources gray-arrow gray-arrow
About gray-arrow gray-arrow
Groups gray-arrow gray-arrow
nav-user Account

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob

CYW920819 i2s routing for microphone via a2dp

MaCh_4826131
Level 1
Level 1
25 sign-ins 10 sign-ins 5 questions asked
‎Feb 10, 2021 07:22 PM
‎Feb 10, 2021 07:22 PM
Jump to solution

Hi,

I have a microphone connected to my CYW920819 board via i2s.

Unfortunately I am unable to get it to stream to my bt headphones via a2dp (is it even possible?).

I am using the watch example for this board and followed the blog below to route i2s.

https://community.cypress.com/t5/Resource-Library/PCM-I2S-Clock-setting-in-CYW20706/ta-p/246335?emcs...

Any help would be greatly appreciated.

Thanks in advance!

 

0 Likes
Subscribe
1 Solution

Re: CYW920819 i2s routing for microphone via a2dp

DheerajPK_41
Moderator
Moderator
Moderator
750 replies posted 500 likes received 500 replies posted
‎Mar 28, 2021 03:50 PM
‎Mar 28, 2021 03:50 PM
Jump to solution

Hi,

CYW20819 is configured as i2s master in the watch app (in wiced_audio_start()). So the i2s mic giving the input should be a slave inroder to work the interface. And in master mode the clock rate for 20819 can be 16 kHz × 16 bits per frame = 256 kHz as per the spec (https://www.cypress.com/file/462851/download).  Please ensure that these conditions are satisfied. 

Also, May I know which  I2S microphone are you using?

I will check whether there is any other restrictions to use i2s interface in 20819 chip or not.

 

Thanks,

-Dheeraj

View solution in original post

0 Likes
3 Replies