Nuvoton ARM Cortex NuMicro M451 Series, Technical Reference Manual

Page: 793 / 1006

M451
May. 4, 2018 Page 793 of 1006 Rev.2.08
M4
51
S
E
RI
E
S
T
E
CH
NICA
L RE
F
E
R
E
NC
E
M
A
NU
A
L
USB Interrupt Event Status Register (USBD_INTSTS)
Register Offset R/W Description Reset Value
USBD_INTSTS 0x004 R/W USB Device Interrupt Event Status Register 0x0000_0000
31 30 29 28 27 26 25 24
SETUP Reserved
23 22 21 20 19 18 17 16
EPEVT7 EPEVT6 EPEVT5 EPEVT4 EPEVT3 EPEVT2 EPEVT1 EPEVT0
15 14 13 12 11 10 9 8
Reserved
7 6 5 4 3 2 1 0
Reserved NEVWKIF VBDETIF USBIF BUSIF
Bits Description
[31]
SETUP
Setup Event Status
0 = No Setup event.
1 = Setup event occurred, cleared by write 1 to USBD_INTSTS[31].
[30:24] Reserved Reserved.
[23]
EPEVT7
Endpoint 7
’s USB Event Status
0 = No event occurred in endpoint 7.
1 = USB event occurred on Endpoint 7, check USBD_EPSTS[31:29] to know which kind
of USB event was occurred, cleared by write 1 to USBD_INTSTS[23] or
USBD_INTSTS[1].
[22] EPEVT6
Endpoint 6
’s USB Event Status
0 = No event occurred in endpoint 6.
1 = USB event occurred on Endpoint 6, check USBD_EPSTS[28:26] to know which kind
of USB event was occurred, cleared by write 1 to USBD_INTSTS[22] or
USBD_INTSTS[1].
[21]
EPEVT5
Endpoint 5
’s USB Event Status
0 = No event occurred in endpoint 5.
1 = USB event occurred on Endpoint 5, check USBD_EPSTS[25:23] to know which kind
of USB event was occurred, cleared by write 1 to USBD_INTSTS[21] or
USBD_INTSTS[1].
[20] EPEVT4
Endpoint 4
’s USB Event Status
0 = No event occurred in endpoint 4.
1 = USB event occurred on Endpoint 4, check USBD_EPSTS[22:20] to know which kind
of USB event was occurred, cleared by write 1 to USBD_INTSTS[20] or
USBD_INTSTS[1].
[19]
EPEVT3
Endpoint 3
’s USB Event Status
0 = No event occurred in endpoint 3.
1 = USB event occurred on Endpoint 3, check USBD_EPSTS[19:17] to know which kind
of USB event was occurred, cleared by write 1 to USBD_INTSTS[19] or
USBD_INTSTS[1].