AM2434: How to enable BISS-C based on AM2434 PRU-ICSSG 333MHZ?

Hi Zekun Bai, 

Yeah It's possible configure ICSSG0 Core clock  to 333 MHz. You can select this option in sysconfig. 

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Zekun Bai said:

The user guide shows only 200MHZ or 300MHZ can support BISS-C.

This is due to reason that RX FIFO Clock of BiSS Interface has dependency upon  ICSS Core Clock or ICSS UART Clock for Clock source. 
As of now we have tested the following combination of rx oversampling & clock source. https://software-dl.ti.com/processor-industrial-sw/esd/motor_control_sdk/am243x/11_00_00_06/docs/api_guide_am243x/BISS-C.html 


In some cases, for example if you are planning to run BiSS-C at 10 MHz, Core Clk Freq is 333 MHz & UART Clk Freq is 192 MHz. The closest possible clock value you can achieve here with 8x Oversampling is 10.4 MHz ( 32 as rx divider). We have not tested these kind of cases. 

Please let me know what's the BiSS interface speed requirement of customer. We can discuss on this further on how to achieve that configuration. 


Regards
Arnav