GL852 USB 2.0 MTT HUB Controller

©2000-2007 Genesys Logic Inc. - All rights reserved.

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1: Power Self

0: Power Bus

PSELF

Inside GL852

On PCB

Figure 5.7 - SELF/BUS Power Setting

5.2.4 LED Connections

GL852 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 GL852. When GL852

is globally suspended, GL852 will turn off the LED to save power.

AMBER/GREEN

Inside GL852

On PCB

DGND

LED

Figure 5.8 - LED Connection

5.2.5 EEPROM Setting

GL852 replies to host commands by the default settings in the internal ROM. GL852 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.