SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
USB Transmit Interrupt Status (USBTXIS)
OTG A / Host
OTG B / Device
USBTXIS is a 16-bit read-only register that indicates which interrupts are currently active for endpoint 0 and the transmit endpoints 1–7. The meaning of the EPn bits in this register is based on the mode of the device. The EP1 through EP7 bits always indicate that the USB controller is sending data; however, in Host mode, the bits refer to OUT endpoints; while in Device mode, the bits refer to IN endpoints. The EP0 bit is special in Host and Device modes and indicates that either a control IN or control OUT endpoint has generated an interrupt.
NOTE
Bits relating to endpoints that have not been configured always return 0. Note also that all active interrupts are cleared when this register is read.
USBTXIS is shown in Figure 27-5 and described in Table 27-10.
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| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| EP7 | EP6 | EP5 | EP4 | EP3 | EP2 | EP1 | EP0 |
| R-0x0 | R-0x0 | R-0x0 | R-0x0 | R-0x0 | R-0x0 | R-0x0 | R-0x0 |