USB-HS logical endpoints

[embedded_eng_]

My logical endpoints map for USB-HS is:

EP1 - CDC1 Interrupt

EP2 - CDC2 interrupt

EP3 - CDC1 BULK IN/OUT

EP4 - CDC2 BULK IN/OUT

EP5 - HID BULK IN/OUT

I'm trying to add a MSC using EP6, but it doesn't work with this EP (works with lower EPs if I cancel another interface).

I'm using LPC55S16-EVK, and the solution should work with LPC5514JBD64E as well.

I'm trying to understand if I ran out of endpoints, or the problem has nothing to do with that.

According to https://www.nxp.com/docs/en/nxp/data-sheets/LPC55S1x_PDS.pdf

page 57,

USB-HS :

 Supports 8 physical (16 logical) endpoints with up to 8 kB endpoint buffer RAM. 

So I just want to make sure that it should work.

Thanks

[Alice_Yang · Accepted solution]

Hello embedded_eng_,

It seems there is some issue in DS.

The USB-HS of lpc55s16 

Supports 12 physical (6 logical) endpoints including control endpoints.