Hi - I'm trying to configure my STM32F429 Discovery board to send digital audio data to a Digilent PmodI2S DAC. Section 28.4.4 (pg 911) of the STM32F429 reference manual says: To achieve high-quality audio performance, the I2SxCLK clock source can be either the PLLI2S output (through R division factor) or an external clock (mapped to I2S_CKIN… Show more
Each PLL has three divider taps for the VCO, P, Q and R. On the main one the P one goes to the processor, the Q to USB/SDIO. Say you run the VCO at 360 MHz, a P setting of 2 gets you to 180 MHz.
