13

03/06/00

GL651USB USB KEYBOARD HUB CONTROLLER

Version 1.0

Endpoint2 (HUB) interrupt change indicator

LEDCTL

( offset 14, default = 00h )

R/W1C

R/W1C

R/W1C

R/W1C

--

--

P2_ON

P1_ON

--

--

P2_TRX

P1_TRX

Hub LED control flag:

P1_TRX

: upstream traffic happens on downstream port 1

P2_TRX

: upstream traffic happens on downstream port 2

P1_ON

: if 1’b1, LED is always on, otherwise, judge according to TRXFLAG

register.

P2_ON

: if 1’b1, LED is always on, otherwise, judge according to TRXFLAG

register.

KBSTUS

( offset 15, default = 0Fh )

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

KCONFIG

KBADR6

KBADR5

KBADR4

KBADR3

KBADR2

KBADR1

KBADR0

Keyboard address and keyboard configuration.

REV

( offset 16, default = current revision )

R/O

R/O

R/O

R/O

R/O

R/O

R/O

R/O

REV7

REV6

REV5

REV4

REV3

REV2

REV1

REV0

This register returns current silicon revision number of this device.

Current revision is 8’h11. (Revision 1.1)

HUBSTUS

( offset 17, default = 00h )

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

HCONFIG DEVADR6 DEVADR5 DEVADR4 DEVADR3 DEVADR2 DEVADR1 DEVADR0

USB hub status registers. Procedure to set the device address:

1. After USB reset, the device responds to default address 0, and hub configuration = 0.

2. USB host controller issues SET_ADDRESS request to the device. (INTRB asserted)

3. Micro-controller recognizes the request, then set DEVADR register with appropriate value.

4. Micro-controller prepares the status stage of SET_ADDRESS request by programming

TXCTL0 register.

5. When the hub configuration value is not equal zero, HCONFIG is set to one.

USB reset will clear this register.

MODSEL

(offset 18, default = 07h)

R/O

R/O

R/O

R/O

R/O

R/O

R/O

R/O

MOD7

MOD6

MOD5

MOD4

MOD3

MOD2

MOD1

MOD0

MOD[7:0] is strapping value at initial state from GPIO[7:0]. GPIO[2:0] is default pull high for

keyboard LED control. F/W can utilize these bits for customization.