TPS65981: Schematic review

Shu-Cheng LIN

Guru 11785 points

Part Number: TPS65981

Hi Sirs,

Sorry to bother you.

Could you help review our schematic as below?

This "@" mark indicates that the reservation.

Schematic:

The following is the PD GPIO List: Is it ok to confirm that it can work?

PD1	Net Name	Function	PD2	Net Name	Function
GPIO0	MUX1_CTL0	USB switch	GPIO0	MUX2_CTL0	USB switch
GPIO2	EN_PD_HV1	external VBus control: Adapter insert: active high Device insert: active low	GPIO2	EN_PD_HV2	external VBus control: Adapter insert: active high Device insert: active low
GPIO3	MUX1_CTL1	DP switch	GPIO3	MUX2_CTL1	DP switch
GPIO4	MUX1_HPD_SNK	Hot Plug Detect received from DisplayPort sink.	GPIO4	MUX2_HPD_SNK	Hot Plug Detect received from DisplayPort sink.
GPIO5	PD1_OTG_JD	USB2 OTG ID	GPIO5	NC
GPIO6	NC		GPIO6	NC
GPIO7	NC		GPIO7	NC
GPIO8	NC		GPIO8	NC
DEBUG1	MUX1_FLIP_SEL	Flip control	DEBUG1	MUX2_FLIP_SEL	Flip control

By the way, we would like to know is there any way to do USB OTG function on USB_ID and USB_VBUSSENSE in GPIO LIST.

How does TYPE-C implement USB OTG?

0 Eric Beljaars over 6 years ago

Hi Shu-Cheng,

The schematic looks ok from the PD controller schematic, I would recommend following the TPS65981EVM schematic as a reference.

The GPIO list is highlighted in the GPIO events app note: http://www.ti.com/lit/an/slva838/slva838.pdf

Thank you,
Eric

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