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TPS2546: TPS2546 issue

Part Number: TPS2546

Hi Sir,

My customer meet an issue about their thunderbolt docking cannot normal charging to apple MAC book in S3 stage,

When MAC book in S0 stage, thunderbolt CPU set TPS2546 CTRL1/2/3 pin to 1/1/1 to set CDP mode,

but MAC book in S3 stage, thunderbolt CPU should be set TPS2546 CTRL1/2/3 pin to 0/1/1 to Auto mode, but this time found it set CTRL1/2/3 pin to 1/1/1, it should be thunderbolt CPU control issue or it may caused by TPS2546, do you meet this issue before? TPS2546 is a passive device controlled by CTRL pin, right?

Thanks!

Jeff