The application must modify this register before enabling the endpoint. Once the endpoint is enabled using the endpoint enable bit in the DIEPCTLx registers (EPENA bit in DIEPCTLx), the core modifies this register. The application can only read this register once the core has cleared the endpoint enable bit.
XFRSIZ | XFRSIZ |
PKTCNT | PKTCNT |
MCNT | MCNT |