
GL850 USB 2.0 4-Port HUB Controller
2000-2003 Genesys Logic Inc.—All rights reserved.
Page 13
3.3 Pin Descriptions
Table 3.2 - Pin Descriptions
USB Interface
Pin#
Pin Name
Type
Description
2,3,4,5
DMF0,DMH0,
DPH0,DPF0
B
USB signals for USPORT
7,8,9,10 DM1,DMH1,
DPH1,DP
13,14,
15,16
DPH2,DP2
24,25,
26,27
DPH3,DP3
30,31,
32,33
DPH4,DP4
B
USB signals for DSPORT1
DM2,DMH2,
B
USB signals for DSPORT2
DM3,DMH3,
B
USB signals for DSPORT3
DM4,DMH4,
B
USB signals for DSPORT2
6
RPU
B
RPU connects 1.5K
Ω
resister to 3.3V. RPU can be set to
disconnected by externally resetting RESET#
A 510
Ω
resister must be connected between RREF and analog
ground (AGND).
17
RREF
B
Note: USB signals must be carefully handled in PCB routing. For detailed information, please refer to
GL850 Design Guideline
.
HUB Interface
Pin#
Pin Name
Type
Description
56,54,
42,40
OVCUR1#~
OVCUR4#
I
(pu)
Active low. Over current indicator for DSPORT1~
DSPORT4
For GANG mode, OVCUR1# is the only over current flag for
GL850
Active low. Power enable output for DSPORT1~
DSPORT4
For GANG mode, PWREN1# is the only power enable output for
GL850.
57,55,
43,41
PWREN1#~
PWREN4#
O
(pu)
60,48,
44,34
GREEN1~
GREEN4
O
(pd)
Green LED indicator for DSPORT1~DSPORT4
61,49,
45,35
AMBER1~
AMBER4
O
(pd)
Amber LED indicator for DSPORT4~DSPORT1
*AMBER[4~1] are also used to access the external
EEPROM. For detailed information, please refer to
Chapter 5.
0: GL850 is bus-powered.
1: GL850 is self-powered.
This pin is default put in input mode after power-on reset.
Individual/gang mode is strapped during this period. After the
strapping period, this pin will be set to output mode, and then
output high for normal mode. When GL850 is suspended, this pin
will output low.
*For detailed explanation, please see Chapter 5
Input: 0: individual, 1: gang
Output: 0: suspend, 1: normal
50
PSELF
I
53
PGANG/
SUSPND
B
(pd)