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08/18/00

GL652USB 7 PORT USB HUB CONTROLLER

Revision 1.2

GPIOD

(offset 0F, default = 0Fh)

R/W

R/W

R/W

R/W

R/W

R/W

R/W

--

GPIO6D/

LED7

GPIO5D/

LED6

GPIO4D/

LED5

GPIO3D/

LED4#

GPIO2D/

LED3#

GPIO1D/

LED2#

GPIO0D/

LED1#

General purpose I/O pin status –

If GPIOXOE = 1 (X: 0 ~ 6), GPIOX is driven with the level of internal GPIOXD latch, which

is the same as corresponding GPIOXD bit. If GPIOXOE = 0, GPIOXD reflects the level of

GPIOX pin, which may be different from internal GPIOXD latch. The value written to GPIOD

will be stored in an internal latch, no matter what direction the GPIOX pins are in. Bits 6 to 0

have been pre -assigned specific functions for LED indicators. (active low).

REV

( offset 10, 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 the HUB.

Current revision is 8’h11. (Revision 1.1)

DEVSTUS

( offset 11, 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 device 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.

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MAXIMUM RATINGS

Maximum ratings are the extreme limits to which the GL652USB can be exposed without permanently

damaging it. The GL652USB contains circuitry to protect the inputs against damage from high static

the range GND

≤ (V

Symbol

Characteristic

Value

Unit

Storage temperature

-55 to +150

°C

Operating temperature

0 to +70

°C

Supply voltage

-0.5 to +7.0

V

DC input voltage

V

I

25

mA

Maximum current out of GND

100

mA

100

mA

Static discharge voltage

>4000

V

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ELECTRICAL CHARACTERISTICS