PSOC5 audio noize problem | Cypress Semiconductor
PSOC5 audio noize problem
Hi, My name is imai and developping USB audio playback function with PSOC5-LP.
I am useing USB FS interface and dmac dac8 PGA for analog audio output(PSOC VDD=3.3v)
also using external audio amp.
PSOC5 USB is conneted to PC and I found that USB isocronous transfer contains several digital noize for audio data.
Do someone know that how to reduce usb noize?
I foud that noize as following method
1. transfer isoclonous audio data from PC to PSOC5
2. transfer above data from PSOC5 to PC by Bulk transfer(with error check)
3. compare above 2 datas