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SAM9260_14 Datasheet, PDF (643/784 Pages) ATMEL Corporation – AT91SAM ARM-based Embbedded MPU | |||
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36.7.7 UDP Interrupt Status Register
Register Name:
UDP_ISR
Access Type:
Read-only
31
30
29
28
27
26
25
24
â
â
â
â
â
â
â
â
23
22
21
20
19
18
17
16
â
â
â
â
â
â
â
â
15
14
13
12
11
10
9
8
â
â
WAKEUP ENDBUSRES SOFINT
EXTRSM
RXRSM
RXSUSP
7
6
5
4
3
2
1
0
EP5INT
EP4INT
EP3INT
EP2INT
EP1INT
EP0INT
⢠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
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 3ms. The USB device enters Suspend mode.
⢠RXRSM: UDP Resume Interrupt Status
0 = No UDP Resume Interrupt pending.
1 =UDP Resume Interrupt has been raised.
The USB device sets this bit when a UDP resume signal is detected at its port.
SAM9260 [DATASHEET]
6221KâATARMâ15-Oct-12
643
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