GL852 USB 2.0 MTT HUB Controller
GREEN2/
EE_DO
11 RREF
12 AVDD
B
P
23 GREEN4
24 AMBER4
O
O
35
36
O
O
47 DGND
48 DVDD
P
P
AMBER2/
EE_DI
3.3 Pin Descriptions
Table 3.3 - Pin Descriptions
USB Interface
GL852
GL852
Pin Name
I/O Type
Description
64 Pin#
48Pin#
3,4
DM0,DP0
DM1,DP1
DM2,DP2
DM3,DP3
DM4,DP4
3,4
B
B
B
B
B
USB signals for USPORT
8,9
5,6
USB signals for DSPORT1
USB signals for DSPORT2
USB signals for DSPORT3
USB signals for DSPORT4
14,15
25,26
31,32
9,10
17,18
21,22
A 680Ω resister must be connected between RREF and
analog ground (AGND).
RREF
17
11
B
Note: USB signals must be carefully handled in PCB routing. For detailed information, please refer to
GL852 Design Guideline.
HUB Interface
GL852
64 Pin#
GL852
48Pin#
Pin Name
I/O Type
Description
Active low. Over current indicator for DSPORT1~4
OVCUR1# is the only over current flag for GANG
mode.
56,54,
42,40
I
(pu)
OVCUR1#~4
PWREN1#~4
GREEN1~4
42,40,30,28
43,41,31,29
45,35,32,23
Active low. Power enable output for DSPORT1~4
PWREN1# is the only power-enable output for GANG
mode.
57,55,
43,41
O
1,3,4: O
2: B
(pd)
O
Green LED indicator for DSPORT1~4
*GREEN[1~2] are also used to access the external EEPROM
For detailed information, please refer to Chapter 5.
60,48,
44,34
61,49,
45,35
Amber LED indicator for DSPORT1~4
*Amber [1~2] are also used to access the external EEPROM
AMBER1~4
PSELF
46,36,33,24
37
(pd)
0: GL852 is bus-powered.
1: GL852 is self-powered.
50
I
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 GL852 is suspended, this pin will output low.
*For detailed explanation, please see Chapter 5
PGANG/
SUSPND
53
39
B
Gang
Individual
input:1, output: 0@normal, 1@suspend
input:0, output: 1@normal, 0@suspend
©2000-2007 Genesys Logic Inc. - All rights reserved.
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