1423—01/20/09

ICS9UMS9633B

ULTRA MOBILE PC/MOBILE INTERNET DEVICE

2

Advance Information

SSOP Pin Description

PIN #

PIN NAME

TYPE

DESCRIPTION

1

REF

OUT

14.318 MHz reference clock.

2

GNDREF

PWR Ground pin for the REF outputs.

3

VDDCORE_3.3

PWR 3.3V power for the PLL core

4FSC_L

IN

Low threshold input for CPU frequency selection. Refer to input electrical

characteristics for Vil_FS and Vih_FS values.

5TEST_MODE

IN

TEST_MODE is a real time input to select between Hi-Z and REF/N divider mode

while in test mode. Refer to Test Clarification Table.

6

TEST_SEL

IN

TEST_SEL: latched input to select TEST MODE

1 = All outputs are tri-stated for test

0 = All outputs behave normally.

7

SCLK

IN

Clock pin of SMBus circuitry, 5V tolerant.

8

SDATA

I/O

Data pin for SMBus circuitry, 3.3V tolerant.

9

VDDCORE_3.3

PWR 3.3V power for the PLL core

10

VDDIO_1.5

PWR Power supply for low power differential outputs, nominal 1.5V.

11

DOT96C_LPR

OUT

Complement clock of low power differential pair for 96.00MHz DOT clock. No 50ohm

resistor to GND needed. No Rs needed.

12

DOT96T_LPR

OUT

True clock of low power differential pair for 96.00MHz DOT clock. No 50ohm resistor

to GND needed. No Rs needed.

13

GNDDOT

PWR Ground pin for DOT clock output

14

GNDLCD

PWR Ground pin for LCD clock output

15

LCD100C_LPR

OUT

Complement clock of low power differential pair for LCD100 SS clock. No 50ohm

resistor to GND needed. No Rs needed.

16

LCD100T_LPR

OUT

True clock of low power differential pair for LCD100 SS clock. No 50ohm resistor to

GND needed. No Rs needed.

17

VDDIO_1.5

PWR Power supply for low power differential outputs, nominal 1.5V.

18

VDDCORE_3.3

PWR 3.3V power for the PLL core

19

*CR#0

IN

Clock request for SRC0, 0 = enable, 1 = disable

20

GNDSRC

PWR Ground pin for the SRC outputs

21

SRCC0_LPR

OUT

Complementary clock of differential 0.8V push-pull SRC output with integrated 33ohm

series resistor. No 50ohm resistor to GND needed.

22

SRCT0_LPR

OUT

True clock of differential 0.8V push-pull SRC output with integrated 33ohm series

resistor. No 50ohm resistor to GND needed.

23

*CR#1

IN

Clock request for SRC1, 0 = enable, 1 = disable

24

VDDCORE_3.3

PWR 3.3V power for the PLL core