8

03/06/00

GL651USB USB KEYBOARD HUB CONTROLLER

Version 1.0

LEDCTL

14h

LED control flag

KBSTUS

15h

Keyboard address and configuration status

REV

16h

Chip revision

HUBSTUS

17h

USB hub address and configuration status

MODSEL

18h

Strapping mode register

R/O:

read only

R/W:

read / write

R/W1C:

read / write “1” to clear

W/O:

write only

DEVCTL

( offset 00, default = 00h )

R/W

R/O

R/W

R/W

R/W

R/O

R/W

USBRDY

--

GANG

RW_KB

RW_HUB

SFRAME

SELF

PWRDN

USBRDY

: 0 - USB interface is not ready. The device drives USB with SE0.

1 - USB interface is ready. The device stops driving USB with SE0.

After power-on reset, USBRDY is cleared and the device looks like

disconnected. Set USBRDY to ‘1’ to enable USB interface.

GANG

: 0 – Individual mode. 1 – gang mode.

RW_KB

: remote wakeup ability enable for keyboard.

RW_HUB

: remote wakeup ability enable for hub.

SFRAME

: short frame option for test purpose

Set SFRAME to ‘1’ will shorten frame length to 1/15 ms. It is to shorten the

time required for test.

SELF

: 0 - HUB is bus powered.

1 - HUB is self-powered.

PWRDN

: power down mode

In suspend state, firmware can set PWRDN to put the controller into power

down mode. In this mode, the embedded micro-controller and most internal

activities are frozen.

EVTFLG

_1

( offset 01, default = 00h )

R/W1C

R/W1C

R/W1C

R/W1C

R/W1C

R/W1C

R/W1C

--

EP3TX

EP2TX

EP1TX

EP0TXKB

EP0TXHB

EP0RXKB

EP0RXHB

Interrupt event flag –

EP0RXHB

: a SETUP or OUT transaction to endpoint 0 of hub is accepted

EP0RXKB

: a SETUP or OUT transaction to endpoint 0 of keyboard is accepted

EP0TXHB

: USB host controller accepts hub data transmitted via endpoint 0.

EP0TXKB

: USB host controller accepts keyboard data transmitted via endpoint 0.

EPnTX

: USB host controller accepts data transmitted via endpoint n