MUSB_CSR0_P_DATAEND
csr |= MUSB_CSR0_P_DATAEND;
csr |= MUSB_CSR0_P_DATAEND;
if (csr & MUSB_CSR0_P_DATAEND) {
musb->ackpend |= MUSB_CSR0_P_DATAEND;
| MUSB_CSR0_P_DATAEND;
musb->ackpend | MUSB_CSR0_P_DATAEND);