GL651USB 데이터 시트보기 (PDF) - Genesys Logic

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GL651USB

2-PORT USB KEYBOARD HUB CONTROLLER

Genesys Logic 

GL651USB USB KEYBOARD HUB CONTROLLER

LEDCTL

KBSTUS

REV

HUBSTUS

MODSEL

R/O:

R/W:

R/W1C:

W/O:

14h

LED control flag

15h

Keyboard address and configuration status

16h

Chip revision

17h

USB hub address and configuration status

18h

Strapping mode register

read only

read / write

read / write “1” to clear

write only

DEVCTL

R/W

USBRDY

--

USBRDY

GANG

RW_KB

RW_HUB

SFRAME

SELF

PWRDN

( offset 00, default = 00h )

R/O

R/W

R/W

R/W

R/O

R/W

RW_KB RW_HUB SFRAME SELF

GANG

PWRDN

: 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.

: 0 – Individual mode. 1 – gang mode.

: remote wakeup ability enable for keyboard.

: remote wakeup ability enable for hub.

: 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.

: 0 - HUB is bus powered.

1 - HUB is self-powered.

: 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

EP0RXHB

--

EP0RXKB

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

8

03/06/00

Version 1.0

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