CYPD3177 D+/D-

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WoFr_4552441
Level 1
Level 1
5 sign-ins First reply posted First question asked

Hello all,

The BCR CYPD3177 controller datasheet states to leave D+/D- pins unconnected.

The CYPD4533 eval board reference design has the D+/D- signals connected to the respective pins on the USB-C connector.

1) Is the CYPD3177 a USB device and what functionality does it provide?

2) Does the power delivery negotiation happen without D+/D- connected?

Thanks in advance.

- Wolfgang.

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1 Solution
YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hi Wolfgang,

D+/D- connection is for Apple charging 2.4A. If you do not want these legacy charge features, you can left it unconnected.


Regards,
Eddie

View solution in original post

1 Reply
YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hi Wolfgang,

D+/D- connection is for Apple charging 2.4A. If you do not want these legacy charge features, you can left it unconnected.


Regards,
Eddie