Hi Team,
Here is a question from customer.
They use safety lib to do self test and find the execution time has big difference when running PBIST on all rom memories, which make the time of software initialization too long. so customer want to know the reason. why does it take much time on self test of PBSIT rom. Which factor affects this?
BRs
Given
Hi Given,
The clock associated to ROM groups PBIST testing is the STC/PBIST ROM clock.
As mentioned in the TMS570LC4357 datasheet, the PBIST ROM clock frequency is limited to the maximum frequency of 82.5 MHz
In case the STC is used, the maximum clock rate available for test is 110 MHz. Based on this, the operating time for PBIST ROM tests can vary.
For ROM PBIST, we have slow read and fast read algorithms and the profiling time given below :
(This is also available in SafeTI_Diagnostioc_Library_Datasheet)
These are the factors that affects the time required for selftest on PBIST ROM.
Regards,
Akshay
