The spi of tle82453 communicates error with stm32G431

[rwj112358]

I use stm32G431RBT6 to communicate with the tle82453 by spi.

For tle82453:

The clock is from extern 25Mhz accurate clocks. The divider  is 6.The spi is slave,with spi clk from the stm32G431.The MOSI and MISO are connected to stm32G431 too.

For stm32G431RBT6:

When I  configure the spi clock  with 25Mhz,and divider of 16.The communication is normal without error.

But when I configure the spi clock with other values,e.g,21.25Mhz(The max frequency of stm32G431RBT6  170 Mhz divided by 8 ),and divider of 16.The communication will fail in debug.

I wonder whther the clock frequncy and the spi  frequncy of tle82453 are limited in some cases.I would be appreciate for your

[Pranava_YN · Accepted solution]

Hello,

Yes indeed, the Functional Range of the SPI Clock Frequency is limited @ max 8MHz. To ensure correct functioning, please use parameters within specified limits.