ics9248-20 Integrated Device Technology, ics9248-20 Datasheet - Page 2

• Manufacturer Part Number: ics9248-20
• Description: Pentium/protm System Clock Chip
• Manufacturer: Integrated Device Technology

Pin Descriptions
Select Functions
0276D—06/04/07
ICS9248-20
S
1
, 8
0
p
S
F
0
1
E
0
0
0
0
e r
1
1
1
1
6 /
u
, 0
L
T
6
P
n
3
a
e
r T
#
, 5
N I
1
t c
d
t s
, 6
, 1
s i
, 1
2
2
1
2
3
3
4
3
N
o i
S
, 9
m
1
1
, 9
, 0
, 2
, 6
, 4
, 6
, 4
a t
, 7
, 2
2
2
2
2
3
4
4
4
4
U
2
3
4
p
3
5
, 2
7
, 3
F
n
o
4
5
8
9
0
2
3
6
8
1
1
1
M
3
2
2
3
3
4
e t
3
4
e
0
0
0
0
S
1
1
1
1
4
5
d
a
1
1
3
2
3
7
8
, 9
5
1
1
B
t c
7
e
8
, 4
i l
E
4
u r
y t
R
1
0
, 6
m
F
S
0
0
0
0
1
1
1
1
1
0
7
M
T
o
A
A
H
C
d
C
i t c
i t c
- I
u
L
P
e v
e v
a l
K
S
C
P
C
U
I
4
P
E
O
Z
P
P
2 /
P
e t
6
C
S
8
P
1
R
C
(
(
(
(
L
6
N I
F
U
A
e T
C
0
M
P
V
G
R
R
R
R
C I
U
G
V
F
E
G
G
1
T
G
V
V
_ I
6 .
1
V
d
S
0
G
C
P
V
C I
R
P
D
u
N
D
i r
e
e
e
e
H
_
N
N
t s
F
0
M
D
D
X
N
L
N
D
2
M
N
X
S
N
C I
n
D
L
S -
s
s
P
s
s
P
N
E
D
S
(
D
0
D
C /
D
z
D
L
K
D
2
D
D
r e
r e
r e
r e
H
(
D
1
D
: 0
T
D
t c
M
A
K
H
D
I C
I C
D
6 /
A
T
M
#
: 0
L
L
a t
K
L
L
(
2
3
O
z
2
3
(
1
1
e v
e v
z
e v
e v
M
(
) 1
O
o i
o
: 0
D
2
2
1
_
6
(
1
: 0
T
: 0
) 2
e t
o
P
: 3
d
C
C
P
P
E
F
6 .
#
n
) 1
) d
) d
) d
) d
H
C
) 1
e
) 6
d
#
P
) 0
P
P
#
#
C
, U
- I
u
L
, U
C
_ I
a l
K
3
, I
3
Z
6 /
3
F
e t
3
3 .
3 .
1
d
2
1
T
P
P
P
P
P
P
P
P
P
P
P
P
O
O
O
O
O
O
O
4
Y
W
W
W
W
W
W
W
W
W
W
W
W
N I
N I
N I
N I
N I
N I
N I
T
3 .
U
U
U
U
U
U
U
H
-
P
R
C
T
R
T
R
T
T
R
R
R
R
T
R
R
R
T
R
T
R
R
E
1
- I
E
L
8
F
K
M
Z
1
H
1
G
G
F
P
P
s I
s I
P
G
S
H
F
E
P
H
H
P
G
C
N
G
I
P
S
X
a
X
4
z
O
2
4
e r
e r
n
o
o
8
o
o
o
I C
e
n
u
T
T
o
o
=
a
a
P
t o
o r
o r
o r
o r
o r
A
1
3 .
d
w
w
w
w
w
A
A
M
a
e l
1
s t l
s t l
p
a l
a l
e
q
U
u
u
u
u
u
P
4
b
p
L
L
e
e
0
e
e
n i
r e
1
c
e f
H
t c
u
e t
e t
I
n
n
n
n
n
R
e l
C I
f r
f r
0
s r
f r
y l
8
_
_
o l
a
O
T
3 .
e
C
P
e t
z
H
d
e
d
d
d
d
d
d
N I
O
u
M
n
M
s
o f
p
n
k c
I C
r o
r o
P
r o
C
d
f
n r
A
o
d
1
n
d
- I
f
f
f
n i
y c
f
o f
o
r o
U
p
g
H
H
r o
r o
r o
S
r o
I r
U
u
n
o
b
u
L
1
8
o
o r
I P
H
a
T
o
P
4
C
I r
z
, z
p
B
p t
w
n i
f
a
p t
O
R
4
w
K
S
y l l
M
8
r o
c
Notes:
1. TCLK is a test clock driven on the X1
2. -0.5% modulation down spread from the
R
P
u
4
e r
C
C
o
Z
u
u
P
k c
c
3 .
C
n
O
g
u
o l
A
E
C
p t
e
M
L
e
u
8
t s
I C
n
s
1
E
P
o l
C I
U
a
s t
H
y r
f r
=
A
s t
1
M
e
e l
c
c
P
F
c
P
d
u
H
F
U
e r
d
t a
k c
o
n
6
h
s k
c
(crystal in pin) input during test mode.
selected frequency.
8
P
L
o
C I
t s
t c
z
I C
. s t
r o
H
o
0 (
f
z
a
, p i
o l
n
1 (
M
6
o
K
r o
S
s
u
o
C I
u
o l
l a
z
n
b
6 .
o
u
o
s i
p t
2 :
p
p
t a
u
k c
H
p t
4
o
c
o
T
o
n i l
e
S
g
u
p t
u
c
o
n i
e
a
p t
4
M
3 .
o t
r o
o
u
o
u
u
, )
T
z
T
c
u
4
p t
u
p t
c i
o
u
i t c
t c
o l
e
p t
u
g
s
o
u
8
u
p t
, s t
u
e t
L
p t
H
1
f r
s t
H
, e
p t
8
C
C
e r
X
t u
s t
u
u
p t
p t
u r
g
e l
. s t
0 .
0 "
8
u
e v
t u
1
z
d
u
y r
c
, 1
o r
, s t
p t
u
c i
- I
L
M
u
, s t
u
n
0
n
M
o
m
, s t
D
l "
t c
s t
P (
M
t s
o
o
u
s t
K
m
, t
0
m
H
o l
0 "
X
E
m
n
v e
s t
H
M
m
n
l a
I C
e f
Z
2 /
h
) z
, 2
o i
H
p
n
w
o
S
l "
X
o
n i
H
n i
a
t a
o
a
z
l e
m
C
m
z
n i
2
@
1
s
v e
@
n
m
a
u t
n
a
z
a
b i
R
n i
p
w l
w
o
y l l
n i
y l l
n i
n i
e r
r o
l e
e l
P I
u
a
2
m
h
2
a
a
e t
a
, t
y l l
5 .
e
5 .
3
2
y l l
s y
n i
w
w
I T
3
6
y l l
n r
3 .
n
5 .
h
V
6
V
3 .
h
l a
h
3
O
a
2
6 .
o l
l a
V
y s
e
e
V
3
V
3 .
s
5 .
N
3
n
n
3 .
w
M
n
o l
V
3 .
n i
V
L
o l
V
H
c
a
V
e t
O
h
w
z
d
o r
W
n r
c
n
l a
a
o
p
u
3
3
s
3
3
p
3
p
F
3
F
3 .
o l
M
a
d
H
c
) z
a
p