MTK platform + usb hub chip connect usb mic local play alone (48 k dual channel 16 bit) and recording (48 k single channel 16 byte) there is no problem, but when the intercom (broadcast at the same time to collect audio) ok, collecting audio, grabbing uplink port with the usb analyzer, respectively (between the CPU and the hub) and downstream port (between the hub and usb mic) data, due to the use of dual channel 48 k 16 byte data for 192 byte, CPU use synchronous separation mode to send data up to 188 byte at a time, so it can be divided into two packets; 188 + 4 Uplink port data discovery and to device between the host to send two packets sent IN the request, and HUB association will lost this IN damage, leading to mic has not receive the host IN the request, mic won't collect audio; (44.1 K using dual channel 16 bit acquisition no problem a packet of 176 byte can host a); OK is a problem with the data and the data below

How do I adjust the host host drive, please send the two data after it is sent IN the request, thank you!!!!!

CodePudding user response:

No one

CodePudding user response:

Has been solved!!!!!!