CCR_DTEIE
if (csr & CSR_DTEF && ccr & CCR_DTEIE) {
swdesc->ccr |= CCR_USEIE | CCR_ULEIE | CCR_DTEIE;
swdesc->ccr |= CCR_USEIE | CCR_ULEIE | CCR_DTEIE;
swdesc->ccr |= CCR_USEIE | CCR_ULEIE | CCR_DTEIE;