AT43310 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT43310

USB Hub

Atmel Corporation 

AT43310

Get_Hub_Status

Get_Hub_Status returns the current Hub status that has

changed since the previous acknowledgment of the setup

packet of the Host.

The Hub will returned two words of data as described in the

following two tables. Word0 is the Hub Status Field, wHub-

Status, and Word1 is the Hub Change Field, wHubChange.

Hub Status Field, wHubStatus

Bit Description

0

Local Power Status, indicates the state of the local power supply, set to 0.

1

Over-Current Indicator, indicates over-current condition on a global hub basis. AT43310 reports over current

condition on a per port basis therefore this bit is always read as 0

2-15 Reserved. Always read as 0’s

Hub Change Field, wHubChange

Bit

Description

0

Local Power Status Change, C_HUB_LOCAL_POWER, set to 0.

1

Over-Current Indicator Change, C_HUB_OVER_CURRENT, corresponds to bit 1 of wHubStatus. AT43310

reports over current condition on a per port basis and therefore this bit is always read as 0

2-15 Reserved. Always read as 0’s.

A Get_Hub_Status will occur if the setup packet is decoded

as:

Field

Value

bmRequestType

Byte 0

10100000B

bRequest

Byte 1

00H

wValue

Byte 2

00H

Byte 3

00H

wIndex

Byte 4

00H

Byte 5

00H

wLength

Byte 6

04H

Byte 7

00H

17

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