USBD ISO endpoint address

[ErekoseTCE]

I have read through the USBD section in the nRF52820 datasheet and I think I cannot do what I need, but wanted to confirm I am not missing something.

I would like to make a USB device that has a isochronous endpoint address of 3.

I see that the endpoint "number" for ISO in the USBD is 8.   I was hoping there was a way to tell the hardware to map address 3 to number 8, but I didn't see one. 

So I think if I want to build a USB device using the nRF54840, I am restricted to having the ISO endpoint address to be 8.

Is this correct?

-Erik

[Amanda Hsieh]

Hi, 

Please see Isochronous transactions section for the detail. 

The ISO endpoints have a fixed USB endpoint number, summarized in the table below.

Table 2. Isochronous endpoint numbering ISO endpoint # USB IN endpoint USB OUT endpoint [0] 0x88 0x08

-Amanda H.