9

08/18/00

GL650USB 4 PORT USB HUB CONTROLLER

Revision 1.2

HUB_STAT_CHG

( offset 08, default = 00h )

R/O

R/O

R/O

R/O

LCPWR

OVCUR

--

--

--

--

C_LCPWR C_OVCUR

HUB status and status change

LCPWR

: HUB local power status

1’b0 – local power good

1’b1 – local power lost

OVRCUR

: HUB over current indicator

1’b0 – No over-current condition currently exists

1’b1 – A hub over-current condition exists

C_LCPWR

: Local power status change

1’b0 – No change has occurred to local power status

1’b1 – local power status has changed

C_OVRCUR

: HUB over current indicator change

1’b0 – No change has occurred to the over-current indicator

1’b1 – Hub over-current indicator has changed

PORT_STATUS ( offset 09, default = 00h )

R/O

R/O

R/O

R/O

R/O

R/O

R/O

PT_LOW_

SPD

PT_PWR

--

PT_RST

PT_OVCU

R

PT_SUS

PT_EN

PT_CON

Port status in dicator:

PT_LOW_SPD

: 1’b0 – full speed device connected, 1’b1 – low speed device

connected

PT_PWR

: 1’b0 – port is in power off state, 1’b1 – port is not in power off state

PT_RST

: 1’b0 – Reset signaling not asserted, 1b’1 – Reset signaling assert ed

PT_OVCUR

: 1’b0 – No over-current condition occurred on this port

1’b1 – An over-current condition exists on this port

PT_SUS

: 1’b0 – port not suspended, 1’b1 – port suspended or resuming

PT_EN

: 1’b0 – port is disabled, 1’b1 – port is enabled

PT_CON

: 1’b0 – No device is present, 1’b1 – A device is present on this port

BUS_PORT_DATA

( offset 0A, default = 00h )

R/O

R/O

R/O

R/O

R/O

R/O

R/O

VP

VM

--

C_PT_RST

C_PT_

OVCUR

C_PT_

SUS

C_PT_EN

C_PT_

CON

Bus state and Port status change in dicator:

VP

: VP state on the downstream port

VM

: VM state on the downstream port

C_PT_RST

: 1’b0 – No change, 1’b1 – Reset complete

C_PT_OVCUR

: 1’b0 – No change has occurred to over-current indicator

1’b1 – over-current indicator has changed

C_PT_SUS

: 1’b0 – No change, 1’b1: – Resume complete

C_PT_EN

: Set to one when a port is disabled because of a Port_error condition

C_PT_CON

: 1’b0 – No change has occurred to current connect status

1’b1 – Current connect status has changed