2

ICS951403

0486B—02/23/04

Pin Descriptions

R

E

B

M

U

N

N

I

PE

M

A

N

N

I

PE

P

Y

TN

O

I

T

P

I

R

C

S

E

D

1

,

2

)

0

:

1

(

S

FN

ID

D

V

o

t

p

u

-

ll

u

p

s

a

h

,

s

n

i

p

t

c

e

l

e

S

y

c

n

e

u

q

e

r

F

)

0

:

1

(

F

E

RT

U

Ot

u

p

t

u

o

k

c

o

l

c

z

H

M

8

1

3

.

4

1

,

5

2

,

1

2

,

6

,

3

7

4

,

1

4

,

8

3

,

3

3

D

N

GR

W

Pd

n

u

o

r

G

41

XN

I

F

p

3

3

l

a

n

r

e

t

n

i

s

a

h

,

t

u

p

n

i

l

a

t

s

y

r

C

z

H

M

8

1

3

.

4

1

N

I

_

L

A

T

X

2

X

m

o

r

f

r

o

t

s

i

s

e

r

k

c

a

b

d

e

e

f

d

n

a

p

a

c

d

a

o

l

52

XT

U

OF

p

3

3

p

a

c

d

a

o

l

l

a

n

r

e

t

n

i

s

a

h

,

t

u

p

t

u

o

l

a

t

s

y

r

C

T

U

O

_

L

A

T

X

7F

_

K

L

C

I

C

PT

U

O

e

h

t

y

b

d

e

t

c

e

f

f

a

t

o

N

.

t

u

p

t

u

o

I

C

P

g

n

i

n

n

u

R

e

e

r

F

.

t

u

p

n

i

#

P

O

T

S

_

I

C

P

,

0

1

,

1

1

,

3

1

,

4

1

,

6

1

,

7

1

8

)

0

:

6

(

K

L

C

I

C

PT

U

OV

3

.

3

e

l

b

i

t

a

p

m

o

c

L

T

T

.

s

t

u

p

t

u

o

k

c

o

l

c

I

C

P

5

1

,

9I

C

P

D

D

VR

W

PV

3

.

3

y

ll

a

n

i

m

o

n

,

s

t

u

p

t

u

o

K

L

C

I

C

P

r

o

f

r

e

w

o

P

8

1P

G

A

D

D

VR

W

PV

3

.

3

y

ll

a

n

i

m

o

n

,

s

t

u

p

t

u

o

P

G

A

r

o

f

r

e

w

o

P

9

1

,

0

2)

0

:

1

(

P

G

AT

U

O

e

b

t

o

n

y

a

m

e

s

e

h

T

.

I

C

P

X

2

s

a

d

e

n

i

f

e

d

s

t

u

p

t

u

o

P

G

A

.

d

e

p

p

o

t

s

4

3D

D

VR

W

PV

3

.

3

y

ll

a

n

i

m

o

n

,

e

r

o

c

r

o

f

r

e

w

o

p

d

e

t

a

l

o

s

I

2

28

4

D

D

VR

W

PV

3

.

3

y

ll

a

n

i

m

o

n

s

t

u

p

t

u

o

z

H

M

4

2

d

n

a

z

H

M

8

4

r

o

f

r

e

w

o

P

3

2z

H

M

8

4T

U

Ot

u

p

t

u

o

z

H

M

8

4

4

2

#

8

4

-

4

2

L

E

SN

I

4

2

n

i

p

r

o

f

t

u

p

t

u

o

z

H

M

8

4

r

o

4

2

s

t

c

e

l

e

S

z

H

M

4

2

=

h

g

i

H

z

H

M

8

4

=

w

o

L

z

H

M

8

4

-

4

2T

U

O#

8

4

-

4

2

L

E

S

h

g

u

o

r

h

t

e

l

b

a

t

c

e

l

e

s

t

u

o

k

c

o

l

c

d

e

x

i

F

6

2K

L

C

SN

II

f

o

n

i

p

k

c

o

l

C

2

t

n

a

r

e

l

o

t

V

5

y

r

t

i

u

c

r

i

c

C

7

2A

T

A

D

SO

/

II

r

o

f

n

i

p

a

t

a

D

2

t

n

a

r

e

l

o

t

V

5

y

r

t

i

u

c

r

i

c

C

8

22

S

FN

ID

D

V

o

t

p

u

-

ll

u

p

s

a

h

,

n

i

p

t

c

e

l

e

S

y

c

n

e

u

q

e

r

F

9

2#

D

A

E

R

P

SN

I

n

w

o

D

.

W

O

L

n

e

h

w

e

r

u

t

a

e

f

m

u

r

t

c

e

p

S

d

a

e

r

p

S

s

e

l

b

a

n

E

z

H

K

0

5

=

y

c

n

e

u

q

e

r

f

n

o

i

t

a

l

u

d

o

m

%

5

.

0

d

a

e

r

p

S

0

3#

D

PN

I

s

t

u

p

t

u

o

ll

a

&

L

L

P

l

a

n

r

e

t

n

I

.

w

o

l

e

v

i

t

c

a

,

p

i

h

c

n

w

o

d

s

r

e

w

o

P

.

d

e

l

b

a

s

i

d

e

r

a

1

3#

P

O

T

S

_

U

P

CN

I

s

a

r

e

h

w

W

O

L

n

e

v

i

r

d

s

i

T

K

L

C

U

P

C

.

s

K

L

C

U

P

C

s

t

l

a

H

d

e

t

r

e

s

s

a

s

i

n

i

p

s

i

h

t

n

e

h

w

H

G

I

H

n

e

v

i

r

d

s

i

C

K

L

C

U

P

C

.

)

W

O

L

e

v

i

t

c

A

(

2

3#

P

O

T

S

_

I

C

PN

I

.

w

o

l

n

e

v

i

r

d

n

e

h

w

l

e

v

e

l

"

0

"

c

i

g

o

l

t

a

s

u

B

I

C

P

s

t

l

a

H

n

i

p

s

i

h

t

y

b

d

e

t

c

e

f

f

a

t

o

n

s

i

F

_

K

L

C

I

C

P

5

3

#

T

E

S

E

RT

U

O

r

e

m

t

g

o

d

h

c

t

a

w

r

o

f

l

a

n

g

i

s

t

e

s

e

r

m

e

t

s

y

s

e

m

i

t

l

a

e

R

.

w

o

l

e

v

i

t

c

a

s

i

l

a

n

g

i

s

s

i

h

T

.

t

u

o

e

m

i

t

6

4T

U

O

_

M

A

R

D

ST

U

Or

e

f

f

u

b

y

a

l

e

d

o

r

e

z

M

A

R

D

S

r

o

f

k

c

o

l

c

e

c

n

e

r

e

f

e

R

4

4D

E

V

R

E

S

E

RC

/

Nli

a

r

r

e

w

o

p

U

P

C

e

r

u

t

u

F

6

3

,

9

3

,

2

4)

0

:

2

(

T

K

L

C

U

P

CT

U

O

n

e

p

o

e

s

e

h

T

.

s

t

u

p

t

u

o

U

P

C

r

i

a

p

l

a

i

t

n

e

r

e

f

f

i

d

f

o

s

k

c

o

l

c

"

e

u

r

T

"

.

p

u

-

ll

u

p

V

5

.

1

l

a

n

r

e

t

x

e

n

a

d

e

e

n

s

t

u

p

t

u

o

n

i

a

r

d

7

3

,

0

4

,

3

4)

0

:

2

(

C

K

L

C

U

P

CT

U

O

.

t

u

p

t

u

o

U

P

C

r

i

a

p

l

a

t

n

e

r

e

f

f

i

d

f

o

s

k

c

o

l

c

"

y

r

a

t

n

e

m

e

l

p

m

o

C

"

.

p

u

_

ll

u

p

V

5

.

1

l

a

n

r

e

t

x

e

n

a

d

e

e

n

s

t

u

p

t

u

o

n

i

a

r

d

n

e

p

o

e

s

e

h

T

5

4D

S

D

D

VR

W

PV

3

.

3

y

ll

a

n

i

m

r

o

N

.

n

i

p

T

U

O

_

M

A

R

D

S

r

o

f

r

e

w

o

P

8

4F

E

R

D

D

VR

W

PV

3

.

3

y

ll

a

n

i

m

o

n

,

2

X

,

1

X

,

F

E

R

r

o

f

r

e

w

o

P

General Description

The ICS951403 is a main clock synthesizer chip for AMD-K7 based systems with ATI chipset. This provides all clocks

required for such a system.

The ICS951403 belongs to ICS new generation of programmable system clock generators.

It employs serial

programming I

strength, configuring output to output skew, changing spread spectrum amount, changing group divider ratio and dis/

enabling individual clocks.

This device also has ICS propriety 'Watchdog Timer' technology which will reset the

frequency to a safe setting if the system become unstable from over clocking.