AT43USB325 datasheet(36/109 Pages) ATMEL

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3355C–USB–4/05

AT43USB325

4.13.5

Suspend/Resume Register – SPRSR

• Bit 7 – INTD: External Interrupt D

The INTD bit is set when an external interrupt at the INTD pin is detected.

• Bit 6 – INTC: External Interrupt C

The INTC bit is set when an external interrupt at the INTC pin is detected.

• Bit 5 – INTB: External Interrupt B

The INTB bit is set when an external interrupt at the INTB pin is detected.

• Bit 4 – INTA: External Interrupt A

The INTA bit is set when an external interrupt at the INTA pin is detected.

Note:

INTA/B/C/D cannot be used to wake up the AT43USB325 from the suspend state.

• Bit 3 – BUS INT: USB Bus Interrupt

When the USB reset separation feature is enabled (= SPRSIE and SPRSMSK bits 3 are set

to 1) the BUS INT bit is set when USB bus reset is detected by the USB hardware.

• Bit 2 – FRWUP: Function Remote Wakeup

The USB hardware sets this bit to signal that a key depression is detected indicating remote

wakeup. An interrupt is generated if the FRWUP IE bit of the SPRSIE register is set.

• Bit 1 – RSM: Resume

The USB hardware sets this bit when a USB resume signaling is detected at any of its port

except Port 1. An interrupt is generated if the RSM IE bit of the SPRSIE register is set.

• Bit 0 – GLB SUSP: Global Suspend

The USB hardware sets this bit when a USB global suspend signaling is detected. An interrupt is

generated if the GLBSUSP IE bit of the SPRSIE register is set.

Bit

$1FFA

INTD

INTC

INTB

INTA

BUS INT

FRWUP

RSM

GLB SUSP

SPRSR

Read/Write

R/W

Initial Value

AT43USB325 Datasheet(PDF) 36 Page - ATMEL Corporation