Hi, Anil:
Some configuration command packets can be processed at any PDSP and PA LLD will directv those command packets to PDSP5 since it is lightly used.
Yes, the CPSW can forward packets to host queues without going through PASS. The application should call Pa_create() with initDefaultRoute set to FALSE or not call Pa_create() at all. The application should configure PASS CPPI flow 22 and 23 for packets from EMAC port 0 and 1 respectively.
As a general concept, the PA LLD is designed to interact with user application to configure and use PASS which can be considered as a blackbox. It should be sufficient to use PASS with all the APIs provided by PA LLD. It is good to know the basic functional partition of PASS, but it is not required.
Best regards,
Eric