[nRF52840] Trace routing via D+ or D- pins.

RE: [nRF52840] Trace routing via D+ or D- pins.

Krzysztof Rosinski — Wed, 28 Oct 2020 09:39:47 GMT

Thank you, that makes sense.

RE: [nRF52840] Trace routing via D+ or D- pins.

helsing — Wed, 28 Oct 2020 09:36:22 GMT

Hi Krzysztof,

My initial thought was also to reply "Probably not". I have now checked with other team members who say it is not recommended. VBUS, D+ and D- belongs to a different power domain than the GPIOs and also have internal hardwired circuitry.

Best regards,

Håkon

RE: [nRF52840] Trace routing via D+ or D- pins.

Krzysztof Rosinski — Fri, 23 Oct 2020 14:03:02 GMT

Thank you,

Best regards,
Krzysztof

RE: [nRF52840] Trace routing via D+ or D- pins.

helsing — Fri, 23 Oct 2020 13:48:51 GMT

Hi Krzysztof,

I will need to double check. I will get back to you over the weekend.

Best regards,

Håkon

RE: [nRF52840] Trace routing via D+ or D- pins.

Krzysztof Rosinski — Thu, 22 Oct 2020 13:10:04 GMT

Hi, this is not what I mean. I don't like to use D+/D- as GPIO pins. In the layout, I would like to use AC9 but route the trace from AC9 via AD6.

RE: [nRF52840] Trace routing via D+ or D- pins.

Daniel Chisholm — Thu, 22 Oct 2020 12:52:18 GMT

Probably not, based on this snip from the product specification "nRF52840_PS_v1.1.pdf"..?

(edit to add: sorry it looks like I misunderstood the question, so the above info isn't relevant)