TPS65982: tps65982: RX VDM Status

user6310225

Part Number: TPS65982

Hi,

could you point me to where the RX VDM Status byte of e.g. register 0x4f is detailed? I can match the rest of the register to the PD spec but not that byte.

over 5 years ago

0 Kedar_Sirdeshpande over 5 years ago

TI__Expert 3370 points

Hi,

The VDM messages are either Unstructured or Structured. This is documented in the PD3 Specification in "6.4.4 Vendor Defined Message".

Regards,
Kedar

0 user6310225 over 5 years ago in reply to Kedar_Sirdeshpande

Intellectual 320 points

But whether they are structured or unstructured is part of the first VDO (which is the VDM header), right? I was asking about the `RX VDM Status` byte in that register - i couldn't find that in the PD spec.

0 Kedar_Sirdeshpande over 5 years ago in reply to user6310225

TI__Expert 3370 points

Hi,

Sorry, I misunderstood the question. I will get back to you next week wit the details.

Regards,
Kedar

0 user6310225 over 5 years ago in reply to Kedar_Sirdeshpande

Intellectual 320 points

In fact i misread the docs. The status byte is well documented in

```

7:5 RXVDMSequenceNum Increments by one every time this register is updated, rolls over upon reflow.
4:3 RXVDMSource SOP* of message source.
2:0
52
RXVDMNumValid
00b VDM came from SOP.
01b VDM came from SOP’.
10b VDM came from SOP’’.
11b VDM came from SOP*_Debug.
Number of valid VDOs in this register (#bytes/4, 0-7).

```

sorry for the noise.

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TPS65982: tps65982: RX VDM Status