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DRA821U: MCSPI1 Performance - transaction to transaction time delay

Luke
Expert 3750 points
Part Number: DRA821U

Tool/software:

Hi team,

Customer is experiencing abnormally long time delays (3.5us) between SPI transactions on their board using DRA821U with their FRAM.

All the SPI timing parameters in the DRA821U datasheet for MCSPI signals are in nanoseconds. The FRAM datasheet also shows the timing setup and hold values in nanoseconds.

Has any testing been done on an EVM that we can share with customer? What's the expected transaction to transaction time delay?

If not, can we replicate this on the EVM to help debug this issue?

Best,

Luke