Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
1176
42.7.7 UDP Interrupt Status Register
Name:
UDP_ISR
Address:
0x4008401C
Access:
Read-only
EP0INT: Endpoint 0 Interrupt Status
EP1INT: Endpoint 1 Interrupt Status
EP2INT: Endpoint 2 Interrupt Status
EP3INT: Endpoint 3 Interrupt Status
EP4INT: Endpoint 4 Interrupt Status
EP5INT: Endpoint 5 Interrupt Status
EP6INT: Endpoint 6 Interrupt Status
EP7INT: Endpoint 7Interrupt Status
0: No Endpoint0 Interrupt pending
1: Endpoint0 Interrupt has been raised
Several signals can generate this interrupt. The reason can be found by reading UDP_CSR0:
RXSETUP set to 1
RX_DATA_BK0 set to 1
RX_DATA_BK1 set to 1
TXCOMP set to 1
STALLSENT set to 1
EP0INT is a sticky bit. Interrupt remains valid until EP0INT is cleared by writing in the corresponding UDP_CSR0 bit.
RXSUSP: UDP Suspend Interrupt Status
0: No UDP Suspend Interrupt pending
1: UDP Suspend Interrupt has been raised
The USB device sets this bit when it detects no activity for 3 ms. The USB device enters Suspend mode.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
WAKEUP
ENDBUSRES
SOFINT
EXTRSM
RXRSM
RXSUSP
7
6
5
4
3
2
1
0
EP7INT
EP6INT
EP5INT
EP4INT
EP3INT
EP2INT
EP1INT
EP0INT