GL852 USB 2.0 MTT HUB Controller

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

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RESET#

GANG_CTL

50 ms

Input mode, strapping

to decide individual or

gang mode

Output mode, indicating

GL852 is in normal

mode or suspend mode

Figure 5.5 - Timing of PGANG/SUSPND strapping

DVDD(3.3V)

100K ohm

100K ohm

DVDD(3.3V)

Suspend LED

Indicator

Suspend LED

Indicator

GAND Mode

Individual

Mode

"0": Individual Mode

"1": GANG Mode

SUSPNDO

GANG_CTL

Inside GL852

On PCB

PGANG

Figure 5.6 - GANG Mode Setting

5.2.3 SELF/BUS Power Setting

GL852 can operate under bus power and conform to the power consumption limitation completely (suspend

current < 2.5 mA, normal operation current < 100 mA). By setting PSELF, GL852 can be configured as a

bus-power or a self-power hub.