9.3.6.4 CSROH_REG (in Peripheral mode) Bit Definitions

Table 9-26. CSR0H_REG (Peripheral)
Bit NumberNameReset ValueFunction
[7:1]ReservedN/A
0FlushFIFO0The Arm® Cortex®-M3 processor (fabric master) writes a 1 to this bit to flush the next packet to be transmitted/read from the endpoint 0 FIFO. The FIFO pointer is reset and the TxPktRdy/RxPktRdy bit (bit[1] and bit[0] of CSR0L_REG) is cleared.

FlushFIFO should only be used when TxPktRdy/RxPktRdy is set. At other times, it may cause data to be corrupted.