gl850g

Manufacturer Part Numbergl850g
DescriptionGl850g Usb 2.0 Low-power Hub Controller
ManufacturerGenesys Logic
gl850g datasheet
 
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Figure 5.9 – Schematics Between GL850G and 93C46
GL850G firstly verifies the check sum after power on reset. If the check sum is correct, GL850G will take
the configuration of 93C46 as part of the descriptor contents. To prevent the content of 93C46 from being
over-written, amber LED will be disabled when 93C46 exists.
5.2.7 Power Switch Enable Polarity
Both low/high-enabled power switches are supported. It is determined by jumper setting, based on the state
of pin AMBER2, as the following table:
Table 5.3 – Configuration by power switch type
AMBER2
5.2.8 Port number configuration
Number of downstream port can be configured as 2/3/4 ports by pin strapping in addition to EEPROM,
based on the state of pin AMBER 3, AMBER 4, as the following table:
5.2.9 Non-removable port configuration
For compound application or embedded system, downstream ports that always connected inside the system
can be set as non-removable based on the state of corresponding status LED, pin GREEN 1~4. If the pin is
pull high in the initial stage (POR reset), the corresponding port will be set as non-removable.
©2000-2008 Genesys Logic Inc. - All rights reserved.
GL850G USB 2.0 Low-Power HUB Controller
EE_CS
CS
VCC
EE_SK
SK
NC
EE_DI
DI
NC
EE_DO
DO
GND
93C46
Power switch enable polarity
0
Low-active
1
High-active
Table 5.4 – Port number configuration
AMBER3
AMBER 4
1
0
0
1
0
0
DVDD
Port number
2
3
4
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