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TPA6304-Q1: version?

Part Number: TPA6304-Q1

HI Teams:

TPA6304-Q1 has two versions of a chip.

1. There are no relevant specifications for the versions with version numbers 0X21 and 0x00 in the specifications for the internal registers of the chip on OA

What are the specific differences between these two versions.

2. During small-scale production, some cars have issues with no sound or increased sound, which is suspected to be related to the above version.