Integrated

Circuit

Systems, Inc.

ICS950810

0472F—01/12/04

Block Diagram

Recommended Application:

CK-408 clock for BANIAS processor/ ODEM and

MONTARA-G chipsets.

Output Features:

•

3 Differential CPU Clock Pairs @ 3.3V

•

7 PCI (3.3V) @ 33.3MHz

•

3 PCI_F (3.3V) @ 33.3MHz

•

1 USB (3.3V) @ 48MHz

•

1 DOT (3.3V) @ 48MHz

•

1 REF (3.3V) @ 14.318MHz

•

5 3V66 (3.3V) @ 66.6MHz

•

1 VCH/3V66 (3.3V) @ 48MHz or 66.6MHz

Features:

•

Supports spread spectrum modulation,

down spread 0 to -0.5%. (CPU, 3V66, PCI)

•

Efficient power management scheme through PD#,

CPU_STOP# and PCI_STOP#.

Key Specifications:

•

CPU Output Jitter <150ps

•

3V66 Output Jitter <250ps

•

CPU Output Skew <100ps

Pin Configuration

56-Pin 300mil SSOP

6.10 mm. Body, 0.50 mm. pitch TSSOP

Frequency Generator with 200MHz Differential CPU Clocks

Functionality

* These inputs have 150K internal pull-up resistor to VDD.

2

S

F1

S

F0

S

F

U

P

C

)

z

H

M

(

)

0

:

5

(

6

6

V

3

)

z

H

M

(

F

_

I

C

P

I

C

P

)

z

H

M

(

X0

0

6

6

.

6

6

16

6

.

6

63

3

.

3

3

X0

1

0

0

.

0

0

16

6

.

6

63

3

.

3

3

X1

0

0

0

.

0

0

26

6

.

6

63

3

.

3

3

X1

1

3

3

.

3

3

16

6

.

6

63

3

.

3

3

d

i

M0

0

e

t

a

t

s

i

r

Te

t

a

t

s

i

r

Te

t

a

t

s

i

r

T

d

i

M0

1

2

/

K

L

C

T4

/

K

L

C

T8

/

K

L

C

T

d

i

M1

0

d

e

v

r

e

s

e

Rd

e

v

r

e

s

e

Rd

e

v

r

e

s

e

R

d

i

M1

1

d

e

v

r

e

s

e

Rd

e

v

r

e

s

e

Rd

e

v

r

e

s

e

R

PLL2

PLL1

Spread

Spectrum

3V66_5

3V66_3

3V66_(4,2)

48MHz_USB

48MHz_DOT

X1

X2

XTAL

OSC

3V66

DIVDER

PD#

CPU_STOP#

PCI_STOP#

MULTSEL0

SDATA

SCLK

FS (2:0)

I REF

Control

Logic

Config.

Reg.

REF

3V66_0

CPU

DIVDER

3

3

CPUCLKT (2:0)

CPUCLKC (2:0)

Stop

3V66_1/VCH_CLK

PCICLK (6:0)

PCI

DIVDER

3

7

PCICLK_F (2:0)

Stop

VDDREF

156 REF

X1

255 FS1

X2

354 FS0

GND

453 CPU_STOP#*

PCICLK_F0

552 CPUCLKT0

PCICLK_F1

651 CPUCLKC0

PCICLK_F2

750 VDDCPU

VDDPCI

849 CPUCLKT1

GND

948 CPUCLKC1

PCICLK0 10

47 GND

PCICLK1 11

46 VDDCPU

PCICLK2 12

45 CPUCLKT2

PCICLK3 13

44 CPUCLKC2

VDDPCI 14

43 MULTSEL0*

GND 15

42 IREF

PCICLK4 16

41 GND

PCICLK5 17

40 FS2

PCICLK6 18

39 48MHz_USB

VDD3V66 19

38 48MHz_DOT

GND 20

37 VDD48

3V66_2 21

36 GND

3V66_3 22

35 3V66_1/VCH_CLK

3V66_4 23

34 PCI_STOP#*

3V66_5 24

33 3V66_0

*PD# 25

32 VDD3V66

VDDA 26

31 GND

GND 27

30 SCLK

Vtt_PWRGD# 28

29 SDATA