how to set nRF52832 I2S sampling rate to 96khz

[zyj]

Hi,

our appliction need to using I2S worked at 96kHz sampling, and i find two parameters , MCK and the CONFIG.RATIO,but when i use this formulation:

LRCK = MCK /CONFIG.RATIO,

i can never get the number which approach 96kHz, the much closer number  is 100kHz.

may i have other method to achieve my goal to 96K?

Have a nice day,Thank you very much.

[Sigurd]

Hi,

96kHz is not supported, see this post for more information.

[zyj]

from the post ,"Max sample rate is 48kHz for stereo" ,i set parameters like this: MCK = 6.4M，and CONFIG.RATIO =64 ,16bit and stereo is also setted,we can get 100kHz，and it worked well in my test.so i dont know if i set it in a wrong way.

Thank you for your answer.

[Sigurd]

zyj said:

MCK = 6.4M

You can set it to 6.4M, but it's outside the specification. Max value within spec is 4000 kHz, see this link.