gl850 ETC-unknow, gl850 Datasheet - Page 14

• Manufacturer Part Number: gl850
• Description: Usb 2.0 4-port Hub Controller
• Manufacturer: ETC-unknow

©2000-2003 Genesys Logic Inc.—All rights reserved.
Note: Analog circuits are quite sensitive to power and ground noise. PCB layout must
Notation:
1,12,19,
Type
22,28,
23,29,
37,47,
36,46,
11,18,
63,64
52,59
51,58
Pin#
Pin#
Pin#
20
21
38
39
62
take care the power routing and the ground plane. For detailed information, please refer to
GL850 Design Guideline.
O
I
B
B/I
B/O
P
A
SO
pu
pd
odpu
XTAL1
XTAL2
RESET#
TEST
AVDD
AGND
DVDD
DGND
Pin Name
Pin Name
Pin Name
Output
Input
Bi-directional
Bi-directional, default input
Bi-directional, default output
Power / Ground
Analog
Automatic output low when suspend
Internal pull up
Internal pull down
Open drain with internal pull up
Type
Type
Type
(pd)
O
P
P
P
P
I
I
I
12MHz crystal clock input.
12MHz crystal clock output.
Active low. External reset input, default pull high 100Kè.
When RESET# = low, whole chip is reset to the initial state.
Analog power input for analog circuits.
Analog ground input for analog circuits.
Digital power input for digital circuits.
Digital ground input for digital circuits.
Clock and Reset Interface
0: Normal operation.
1: Chip will be put in test mode.
System Interface
Power / Ground
GL850 USB 2.0 4-Port HUB Controller
Description
Description
Description
Page 14