Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet

Product codes

ATEVK1105

557

AT32UC3A

30.8.2.2

USB Device Global Interrupt Register (UDINT)

Offset:

0x0004

Register Name:

UDINT

Access Type:

Read-Only

Reset Value:

0x00000000

• SUSP: Suspend Interrupt Flag

Set by hardware when a USB “Suspend” idle bus state has been detected for 3 frame periods (J state for 3 ms). This trig-

gers a USB interrupt if SUSPE = 1.
Shall be cleared by software (by setting the SUSPC bit) to acknowledge the interrupt.
Cleared by hardware when a Wake-Up interrupt (WAKEUP) is raised.

• SOF: Start of Frame Interrupt Flag

Set by hardware when a USB “Start of Frame” PID (SOF) has been detected (every 1 ms). This triggers a USB interrupt if

SOFE = 1. The FNUM field is updated.
Shall be cleared by software (by setting the SOFC bit) to acknowledge the interrupt.

• EORST: End of Reset Interrupt Flag

Set by hardware when a USB “End of Reset” has been detected. This triggers a USB interrupt if EORSTE = 1.
Shall be cleared by software (by setting the EORSTC bit) to acknowledge the interrupt.

• WAKEUP: Wake-Up Interrupt Flag

Asynchronous interrupt.
Set by hardware when the USB controller is reactivated by a filtered non-idle signal from the lines (not by an upstream

resume). This triggers an interrupt if WAKEUPE = 1.
Shall be cleared by software (by setting the WAKEUPC bit) to acknowledge the interrupt (USB clock inputs must be

enabled before).
Cleared by hardware when a Suspend interrupt (SUSP) is raised.

DMA6INT

DMA5INT

DMA4INT

DMA3INT

DMA2INT

DMA1INT

–

EP6INT

EP5INT

EP4INT

EP3INT

EP2INT

EP1INT

EP0INT

–

UPRSM

EORSM

WAKEUP

EORST

SOF

–

SUSP

32058K

AVR32-01/12