topic Re: USB Audio Class 2.0 Host driver, inter-operability test protocol? in LPC Microcontrollers

USB Audio Class 2.0 Host driver, inter-operability test protocol?

dav1 — Thu, 08 Jun 2023 17:25:13 GMT

Hi,

For the UAC2.0 driver running in host mode, is there a list of how it has been tested?

i.e.

thanks

xiangjun_rong — Fri, 09 Jun 2023 06:41:35 GMT

Hi,

I suppose I have to ask SDK software team for the test method.

Before I ask the SDK team, can you tell us the part number you are using, what is your project?

XiangJun Rong

dav1 — Fri, 09 Jun 2023 07:50:47 GMT

LPC55S69JEV98

project is a consumer audio device

xiangjun_rong — Thu, 15 Jun 2023 01:59:20 GMT

Hi,

This is our AE feedback, pls refer to it.

Refer USB Stack Host reference manual document first, some questions' answer list as below：

1. inter-operability with class compliant sound-cards, both UAC1 and UAC2?

"The MCUXpresso SDK USB stack provides support for USB Audio Class 1.0 and USB Audio Class 2.0."

2. High-Speed low-latency mode?

No support yet, but user can modify code to increase necessary buffers for low-latency mode.

3. 2ch vs multi-channel

support multi channel.

3. via hub?

VIA HUB tested

XiangJun Rong

dav1 — Mon, 30 Oct 2023 22:44:49 GMT

hi,

can you please help guide me to where I can I find

- the latest version of this usb device driver

- release-notes of changes made to the usb-audio-class 2 device support (any nxp cpu is fine, LPC, RT, etc.)

- since the example code is duplicated for each mcu, where do I find the origin of the uac2 driver itself vs the most recent example implementation?