4

08/18/00

GL650USB 4 PORT USB HUB CONTROLLER

Revision 1.2

30

NC

-

-

31

NC

-

-

32

TEST

I

Test mode input

33

NC

-

-

34

XTAL2

O

Ceramic resonator or crystal out

35

XTAL1

I

Ceramic resonator or crystal in

36

DGND

-

Digital ground

37

PWRENB3#

O

Power enable for downstream port 3

38

OVCUR3#

I

Over current flag for downstream port3

39

NC

-

-

40

NC

-

-

41

DVCC

-

Digital VCC(5V)

42

NC

-

-

43

NC

-

-

44

PWRENB2#

O

Power enable for downstream port 2

45

NC

-

-

46

OVCUR2#

I

Over current flag for downstream port2

47

PWRENB1#

O

Power enable for downstream port 1

48

OVCUR1#

I

Over current flag for downstream port1

Note 1: “#” means low active

Note 2: If using crystal, TEST pull low. If using oscillator, TEST pull high.

Table 1 GL650USB Pin Definitions and Descriptions

RESET

LED4

OVRCUR4#

NC

PWRENB4#

NC

NC

TEST

NC

XTAL2

XTAL1

DGND

AVCC

DM4

DP4

NC

NC

DM1

DP1

NC

NC

AGND

DM0

DP0

GL650USB-A

GL650USB