stream audio via nrf52832 with adau1701

[beginneratallofthis]

I'm using the nrf52832 from fanstel (bt832) to stream audio to the adau1701 dsp. I want to be able to play music over Bluetooth. I'm using i2s to transfer the data to the dsp. my questions are?

1. I'm planning to use the dsp as the master(since it already as an oscillator connected to it) and the Bluetooth module as the slave. besides the lrclk bclk and sdin. do i need to provide anything else to the nrf52832?

2. how do I determine the frequency that i need for the lrclk and the bclk? 

3. also how do I program the nrf52832 to transfer data over i2s as a slave?

this images below shows how the bluetooth module is connected to the dsp.

[haakonsh]

I'm planning to use the dsp as the master(since it already as an oscillator connected to it) and the Bluetooth module as the slave. besides the lrclk bclk and sdin. do i need to provide anything else to the nrf52832?

 No, I think you're good for I2S.

how do I determine the frequency that i need for the lrclk and the bclk? 

 That depends on the signal sample rate of the signal and the I2S's Electrical specification. 

also how do I program the nrf52832 to transfer data over i2s as a slave?

 First you read I2S — Inter-IC sound interface, then the I2S driver API doc, then you try the I2S Loopback Example.