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TDA4VH-Q1: DDR training

min.junlong
Intellectual 266 points

Part Number: TDA4VH-Q1

Hi Ti team,

    We designed our board based on the TDA4VH88 chip. We used the same DDR chip ("MT53E2G32D4DE-046") as that on the EVM board. Unlike the EVM, we only used two DDR4 chips, so the capacity of the content is only 16G.

    Now we have tested several boards and found that there is a problem with the DDR on one of the boards. We attempted to use the "mtest" command in U-boot to test the DDR, and the test results are as follows:
image.png

    Not all the boards have this problem, it's just this particular one that has it. We would like to know if there are any software methods available for testing the timing of DDR or read/write data eye training.