TUSB321: TUSB321AI + HD3SS3212 for UFP application

Avinoam Danieli22

Part Number: TUSB321

Hello,

Using TUSB321, UFP, what happens to DIR output pin when a voltage level within the proper threshold is detected on CC1 and CC2 at the same time.

Avinoam

over 7 years ago

0 Brian Quach over 7 years ago

TI__Expert 4325 points

Hi,

It's not possible to have a connection on both CC pins. The Type-C cable only has a single CC wire.

Regards,

Brian

0 Avinoam Danieli22 over 7 years ago in reply to Brian Quach

Prodigy 100 points

Hello,

We have an option to connect our device directly , without cable, to a smartphone type C connector. In this case, I think two CC signals exist. How would TUSB321 perform. What would be on DIR pin.

Thank you,

0 Brian Quach over 7 years ago in reply to Avinoam Danieli22

TI__Expert 4325 points

Hi, that is not a valid configuration. If your device has a Type-C receptacle, then it must be connected via a cable or dongle (only 1 CC wire to the other side). If your device has a Type-C plug, then only 1 CC wire should be connected to the TUSB321 as the orientation is fixed and DIR is irrelevant. Either way, you can only 1 CC wire connected to the port partner. Please refer to the Type-C specification for further info.

Regards,
Brian

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TUSB321: TUSB321AI + HD3SS3212 for UFP application