Publication Release Date: July, 2008

- 6 -

Version: 1.3

W83772G

The address mapping is shown in the following table.

ADD0

ADD1

ADDRESS

Ground

Ground

0x48h

Floating

Ground

0x49h

Vcc

Ground

0x4ah

Ground

Floating

0x4bh

Floating

Floating

0x4ch

Vcc

Floating

0x4dh

Ground

Vcc

0x4eh

Floating

Vcc

0x4fh

Vcc

Vcc

0x50h

8.

PCB LAYOUT GUIDE

Pin 3 & Pin 4 are typically connected to a thermal diode. Here are some recommendations for optimal

operation:

a) Place remote diode as close as possible to W83772G

b) Route D+ and D- lines away from clock generators, memory buses, or any high frequency buses

c) Place shield traces, which are connecting to board ground, flanking D+/D- to shield the noise

d) It is recommended that the bypass capacitor with 2200pF should be placed close to W83772G to

filter the noise from motherboard digital signals

e) Place a 0.1uF bypass capacitor close to the VCC pin

The connection diagram is shown as the following

Figure 3.

D+

D-

W83772G

2200pf

GND

GND