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USB EZ-PD™ Type-C Forum Discussions

JoLu_3455101
Level 4
Level 4
25 replies posted 25 sign-ins First solution authored

Unlike CCG3, the CCG3PA doesn't have an assigned pin to supply VDDIO. I can only find one instance of "VDDIO" in the CCG3PA datasheet and it didn't specify. My questions are:

1. What determines or what is the VDDIO voltage? My input power comes from either VBUS_IN=20V or VDDD=5V.

2. For my GPIOs configured as outputs, is the high-level voltage same as VDDIO? If not, what is it?

Thanks,

Jonathan

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RajathB_01
Moderator
Moderator
Moderator
250 replies posted 100 replies posted 50 replies posted

Hi Jonathan,

1) The VDDIO supply is internally connected to VDDD. Thus if your input power is VDDD = 5V, VDDIO = 5V. If your input power is VBUS_IN, VDDIO = 3.3V; See page 6 of CCG3PA datasheet.

2) Yes, GPIO output high state will be at voltage level of VDDIO.

Regards,

Rajath

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RajathB_01
Moderator
Moderator
Moderator
250 replies posted 100 replies posted 50 replies posted

Hi Jonathan,

1) The VDDIO supply is internally connected to VDDD. Thus if your input power is VDDD = 5V, VDDIO = 5V. If your input power is VBUS_IN, VDDIO = 3.3V; See page 6 of CCG3PA datasheet.

2) Yes, GPIO output high state will be at voltage level of VDDIO.

Regards,

Rajath

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