LM3S5K36 Datasheet, PDF (806/1050 Pages) Texas Instruments – Stellaris® LM3S5K36 Microcontroller

Universal Serial Bus (USB) Controller
Register 3: USB Transmit Interrupt Status (USBTXIS), offset 0x002
Important: This register is read-sensitive. See the register description for details.
USBTXIS is a 16-bit read-only register that indicates which interrupts are currently active for endpoint
0 and the transmit endpoints 1–15. The meaning of the EPn bits in this register is based on the
mode of the device. The EP1 through EP15 bits always indicate that the USB controller is sending
data; however, the bits refer to IN endpoints. The EP0 bit is special 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.
USB Transmit Interrupt Status (USBTXIS)
Base 0x4005.0000
Offset 0x002
Type RO, reset 0x0000
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
EP15 EP14 EP13 EP12 EP11 EP10
EP9
EP8
EP7
EP6
EP5
EP4
EP3
EP2
EP1
EP0
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
15
Name
EP15
Type
RO
Reset
0
Description
TX Endpoint 15 Interrupt
Value Description
0 No interrupt.
1 The Endpoint 15 transmit interrupt is asserted.
14
EP14
RO
0
TX Endpoint 14 Interrupt
Same description as EP15.
13
EP13
RO
0
TX Endpoint 13 Interrupt
Same description as EP15.
12
EP12
RO
0
TX Endpoint 12 Interrupt
Same description as EP15.
11
EP11
RO
0
TX Endpoint 11 Interrupt
Same description as EP15.
10
EP10
RO
0
TX Endpoint 10 Interrupt
Same description as EP15.
9
EP9
RO
0
TX Endpoint 9 Interrupt
Same description as EP15.
8
EP8
RO
0
TX Endpoint 8 Interrupt
Same description as EP15.
7
EP7
RO
0
TX Endpoint 7 Interrupt
Same description as EP15.
806
January 21, 2012
Texas Instruments-Production Data