FIFO端点在Auto-In模式可以如下,数据手册也有说道:
1. Configure bits IFCONFIG[7:4] to define the behavior of
the interface clock.
2. Set bits IFCFG1:0=11.
3. Set REVCTL.0 and REVCTL.1 to ‘1’.
4. Configure EPxCFG.
5. Reset the FIFOs.
6. Set bit EPxFIFOCFG.3=1.
7. Set the size through the EPxAUTOINLENH:L registers.