AT43USB326 datasheet(63/102 Pages) ATMEL

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AT43USB326

3313D–USB–04/06

Hub General Registers

Global State Register – GLB_STATE

• Bit 7...5 – Reserved Bits

These bits are reserved in the AT43USB326 and will read as zeros.

•Bit 4 – SUSP FLG: Suspend Flag

This bit is set to 1 while the USB hardware is in the suspended state. This bit is a firmware

read only bit. It is set and cleared by the USB hardware.

•Bit 3 – RESUME FLGL Resume Flag

When the USB hardware receives a resume signal from the upstream device it sets this bit.

This bit will stay set until the USB hardware completes the downstream resume signaling. This

bit is a firmware read only bit. It is set and cleared by the USB hardware.

•Bit 2 – RMWUPE: Remote Wakeup Enable

This bit is set if the host enables the hub's remote wakeup feature.

•Bit 1 – CONFG: Configured

This bit is set by firmware after a valid SET_CONFIGURATION request is received. It is

cleared by a reset or by a SET_CONFIGURATION with a value of 0.

•Bit 0 – HADD EN: Hub Address Enabled

This bit is set by firmware after the status phase of a SET_ADDRESS request transaction so

the hub will use the new address starting at the next transaction.

Bit

$1FFB

–

SUSP FLG

RESUME FLG

RMWUPE

CONFG

HADD EN

GLB_STATE

Read/Write

R/W

Initial Value

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