at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 421

• Manufacturer Part Number: at91rm3400
• Description: Atmel Advanced At91 Arm Microcontroller
• Manufacturer: ATMEL Corporation

USB Interrupt Status Register
Register Name:
Access Type:
• EP0INT: Endpoint 0 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 USB_CSR0:
EP0INT is a sticky bit. Interrupt remains valid until EP0INT is cleared by writing in the corresponding USB_CSR0 bit.
• EP1INT: Endpoint 1 Interrupt Status
0 = No Endpoint1 Interrupt pending.
1 = Endpoint1 Interrupt has been raised.
Several signals can generate this interrupt. The reason can be found by reading USB_CSR1:
EP1INT is a sticky bit. Interrupt remains valid until EP1INT is cleared by writing in the corresponding USB_CSR1 bit.
• EP2INT: Endpoint 2 Interrupt Status
0 = No Endpoint2 Interrupt pending.
1 = Endpoint2 Interrupt has been raised.
Several signals can generate this interrupt. The reason can be found by reading USB_CSR2:
EP2INT is a sticky bit. Interrupt remains valid until EP2INT is cleared by writing in the corresponding USB_CSR2 bit.
1790A–ATARM–11/03
EP7INT
RXSETUP set to 1
RX_DATA_BK0 set to 1
RX_DATA_BK1 set to 1
TXCOMP set to 1
STALLSENT set to 1
RXSETUP set to 1
RX_DATA_BK0 set to 1
RX_DATA_BK1 set to 1
TXCOMP set to 1
STALLSENT set to 1
RXSETUP set to 1
RX_DATA_BK0 set to 1
RX_DATA_BK1 set to 1
TXCOMP set to 1
STALLSENT set to 1
31
23
15
–
–
–
7
EP6INT
30
22
14
USB_ISR
Read -only
–
–
–
6
WAKEUP
EP5INT
29
21
13
–
–
5
ENDBUSRES
EP4INT
28
20
12
–
–
4
SOFINT
EP3INT
27
19
11
–
–
3
EXTRSM
EP2INT
26
18
10
–
–
2
RXRSM
EP1INT
AT91RM3400
25
17
–
–
9
1
RXSUSP
EP0INT
24
16
–
–
8
0
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