GL852 USB 2.0 MTT HUB Controller

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

Page 13

11 RREF

B

23 GREEN4

O

35

GREEN2/

EE_DO

O

47 DGND

P

12 AVDD

P

24 AMBER4

O

36

AMBER2/

EE_DI

O

48 DVDD

P

3.3 Pin Descriptions

Table 3.3 - Pin Descriptions

USB Interface

GL852

GL852

Pin Name

64 Pin#

48Pin#

I/O Type

Description

DM0,DP0

3,4

3,4

B

USB signals for USPORT

DM1,DP1

8,9

5,6

B

USB signals for DSPORT1

DM2,DP2

14,15

9,10

B

USB signals for DSPORT2

DM3,DP3

25,26

17,18

B

USB signals for DSPORT3

DM4,DP4

31,32

21,22

B

USB signals for DSPORT4

RREF

17

11

B

A 680

resister must be connected between RREF and

analog ground (AGND).

Note: USB signals must be carefully handled in PCB routing. For detailed information, please refer to

GL852 Design Guideline.

HUB Interface

GL852

GL852

Pin Name

64 Pin#

48Pin#

I/O Type

Description

OVCUR1#~4

56,54,

42,40

42,40,30,28

I

(pu)

Active low. Over current indicator for DSPORT1~4

OVCUR1# is the only over current flag for GANG

mode.

PWREN1#~4

57,55,

43,41

43,41,31,29

O

Active low. Power enable output for DSPORT1~4

PWREN1# is the only power-enable output for GANG

mode.

GREEN1~4

60,48,

44,34

45,35,32,23

1,3,4: O

2: B

(pd)

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.

AMBER1~4

61,49,

45,35

46,36,33,24

O

(pd)

Amber LED indicator for DSPORT1~4

*

PSELF

50

37

I

0: GL852 is bus-powered.

1: GL852 is self-powered.

PGANG/

SUSPND

53

39

B

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

Gang

input:1, output: 0@normal, 1@suspend

Individual

input:0, output: 1@normal, 0@suspend