AT43USB355 datasheet(35/115 Pages) ATMEL

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AT43USB355

2603G–USB–04/06

USB Interrupt Enable Register – UIER

• Bit 7 – SOF IE: Enable Start of Frame Interrupt

When the SOF IE bit is set (1), the Start of Frame Interrupt is enabled.

• Bit 6 – EOF2 IE: Enable EOF2 Interrupt

When the EOF2 IE bit is set (1), the EOF2 Interrupt is enabled.

• Bit 5 – Res: Reserved bit

This bit is reserved and always read as zero.

• Bit 4 – FEP3 IE: Enable Function End-point 3 Interrupt

When the FE3 IE bit is set (1), the Function End-point 3 Interrupt is enabled.

• Bit 3 – HEP0 IE: Enable End-point 0 Interrupt

When the HEP0 IE bit is set (1), the Hub End-point 0 Interrupt is enabled.

• Bit 2 – FEP2 IE: Enable End-point 2 Interrupt

When the FE2 IE bit is set (1), the Function End-point 2 Interrupt is enabled.

• Bit 1 – FEP1 IE: Enable End-point 1 Interrupt

When the FE1 IE bit is set (1), the Function End-point 1 Interrupt is enabled.

• Bit 0 – FEP0 IE: Enable End-point 0 Interrupt

When the FE0 IE bit is set (1), the Function End-point 0 Interrupt is enabled.

Suspend/Resume Register – SPRSR

• Bit 7..4 – Res: Reserved Bits

These bits are reserved and are always read as zeros.

• 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 External Interrupt 1 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

$1FF3

SOF IE

EOF2 IE

–

FEP3 IE

HEP0 IE

FEP2 IE

FEP1 IE

FEP0 IE

UIER

Read/Write

R/W

Initial Value

Bit

543

$1FFA

–

BUS INT

FRWUP

RSM

GLB SUSP

SPRSR

Read/Write

R/W

Initial Value

AT43USB355 Datenblatt(PDF) 35 Page - ATMEL Corporation

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