Posted on April 02, 2017 at 01:46How can I interface this board to STM32 ?
https://www.aliexpress.com/item/Raspberry-Pi-pHAT-Sound-Card-I2S-interface-PCM5102-DAC-Module-24-bit-Audio-Board-With-Stereo/32764769829.html?spm=2114.13010308.0.0.ASyr6e
From datasheet for I2S, what's the relation with the board ?
The SPI could function as an audio I2S interface when the I2S capability is enabled (by
setting the I2SMOD bit in the SPI_I2SCFGR register). This interface uses almost the same
pins, flags and interrupts as the SPI.
The I2S shares three common pins with the SPI:
â—� SD: Serial Data (mapped on the MOSI pin) to transmit or receive the two timemultiplexed
data channels (in simplex mode only).
â—� WS: Word Select (mapped on the NSS pin) is the data control signal output in master
mode and input in slave mode.
â—� CK: Serial Clock (mapped on the SCK pin) is the serial clock output in master mode
and serial clock input in slave mode.
An additional pin could be used when a master clock output is needed for some external
audio devices:
â—� MCK: Master Clock (mapped separately) is used, when the I2S is configured in master
mode (and when the MCKOE bit in the SPI_I2SPR register is set), to output this
additional clock generated at a preconfigured frequency rate equal to 256 × FS, where
FS is the audio sampling frequency.
