topic Re: LPC55S69 endpoints in LPC Microcontrollers

LPC55S69 endpoints

manuela_mendez — Mon, 03 Feb 2025 13:54:53 GMT

Hello NXP Experts!

WRT UM11126 Rev 2.7 - LPC55S6x - I have two questions:

1. Section 41.2 says "Supports ten physical (five logical) endpoints including the control endpoints" and section 41.4 says "Each device can have a maximum of eight logical or 16 physical endpoints including control endpoint" - which one is correct? Could you please report to the doc team to fix this critical inconsistency?

2. Section 44.2 says USB1 "Supports 12 physical (6 logical) endpoints including control endpoints". When USB1 is configured to act as a full-speed device, will it still support 6 logical endpoints just like high-speed device mode?

Thanks in advance!

Re: LPC55S69 endpoints

Alice_Yang — Wed, 05 Feb 2025 07:56:29 GMT

Hello @manuela_mendez

Sorry for the confusion DOC caused to you. For USB0 of the LPC55S6X, it supports ten physical (five logical) endpoints, including the control endpoints. I will submit a documentation issue to the relevant team for a fix. Thank you very much for your sharing.

Regarding question 2, yes, when USB1 is configured to act as a full - speed device, it still support 6 logical endpoints.

Alice

Re: LPC55S69 endpoints

manuela_mendez — Wed, 05 Feb 2025 10:48:57 GMT

Thanks for the quick response Alice. Have a great day!