USBSTS_REG_HC_HALTED
if (intr_status & USBSTS_REG_HC_HALTED) {
if (Get_OpReg16(USBSTS) & USBSTS_REG_HC_HALTED)
Set_OpReg16(USBSTS, USBSTS_REG_HC_HALTED |
case USBSTS_REG_HC_HALTED: