GL850G View Datasheet(PDF) - Genesys Logic

Part Name

Description

Manufacturer

GL850G

USB 2.0 HUB Controller

Genesys Logic 

GL850G USB 2.0 Low-Power HUB Controller

5.2.4 LED Connections

GL850G controls the LED lighting according to the flow defined in section 11.5.3 of Universal Serial Bus

Specification Revision2.0. Both manual mode and Automatic mode are supported in GL850G. When

GL850G is globally suspended, GL850G will turn off the LED to save power.

AMBER/GREEN

LED

Inside GL850G

On PCB

DGND

Figure 5.7 – LED Connection

5.2.5 EEPROM Setting

GL850G replies to host commands by the default settings in the internal ROM. GL850G also offers the

ability to reply to the host according to the settings in the external EEPROM(93C46). The following table

shows the configuration of 93C46.

Table 5.1 – 93C46 Configuration

Unit: Byte

00

01 02 03 04 05 06

07

08 09 0A 0B 0C 0D 0E 0F

00h

VID_L

VID_H PID_L PID_H CHKSUM

FF

DEVICE

PORT

REMOVABLE NUMBER

MaxPower

FF

FF

FF FF FF FF FF

10h

VENDOR

LENGTH

start

20h

Vendor string (ASC II code)

30h

end

40h

PRODUCT

LENGTH

start

50h

Product String(ASC II code)

60h

end

SERIAL

start

70h NUMBER

LENGTH end

Serial Number String(ASC II code)

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