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TUSB1210 chip select pin(CS) config

Other Parts Discussed in Thread: TUSB1210

Hello all,

I have a question for TUSB1210 CS pin.

In the datasheet, it shows that the logic inside TUSB1210 will be reset if CS pin at low voltage.

But it can be tie to Vddio if not used.

My question is:

1)TUSB1210 already has a RESETB pin for reseting the logic, why does it need another reset pin(CS)?

2)If I only use RESETB pin to control TUSB1210, can I just tie CS pin to Vddio?

Regards

Chiayu Lu