nRF9160 I2S mclk

[Aaron]

Hi, Is there a limitation on the available MCLK frequency for the NRF9160
I am trying to configure I2S master with 16K sampling, 16bit, and after i2s_configure()
SDK info prints from i2s_nrfx libs show the below.

[00:00:00.214,233] <inf> i2s_nrfx: I2S MCK frequency: 507936, actual PCM rate: 15873

Based on what I can understand from the library code, There may not be a way to 
generate a higher freq MCLK for my case by playing with ratios and dividers and available clock of 32MHz(please correct me if I am wrong on this) on NRF91

Codec I am using DA7212 seems to require over 1MHz clock to operate as an MLCK slave.
what would be the best way to interface this?

Thanks

[Sigurd]

Hi,

Max MCK frequency is 4000 kHz. See this link: https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf9160%2Fi2s.html&cp=2_0_0_5_6_10_0&anchor=unique_325236725

Also take a look at Table 1. Configuration examples, https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf9160%2Fi2s.html&cp=2_0_0_5_6_4&anchor=concept_ezd_bqy_vr