While configuring the you're most probably committing a zero byte packet by accident. That must be causing the first bulk transfer succeeded 0x0000 issue. I've attached a sample code for you to use in thread http://www.cypress.com/?app=forum&id=167&rID=52253
thank you,I understand the zero packet.#but another question: what is the requirements for the SLWR signal in asynchronous bulk transfer.
Datasheet page 46 section 10.10 Slave FIFO Asynchronous Write