ics9248-92 Integrated Device Technology, ics9248-92 Datasheet - Page 3

• Manufacturer Part Number: ics9248-92
• Description: Mobile Pentium Iitm System Clock Chip
• Manufacturer: Integrated Device Technology

Power-On Conditions
Example:
a) if MODE = 1, pins 26 and 27 are configured as SDRAM7 and SDRAM6 respectively.
b) if MODE = 0, pins 26 and 27 are configured as PCI_STOP# and CPU_STOP# respectively.
Power-On Default Conditions
At power-up and before device programming, all clocks will default to an enabled and “on” condition. The frequencies that are then produced
are on the MODE pin as shown in the table below.
1
0 0
S
6 /
E
0
0
1
1
L
. 6
# 6
M
O
0
0
1
1
D
E
4
R
8
C
E
2 /
L
F
6 1
6 1
6 1
6 1
4
O
(
C
M
1 ,
1 ,
1 ,
1 ,
: 0
1 1
1 1
I P
4
4
4
4
K
H
1 1
1 1
) 2
, 4
, 4
, 4
, 4
, 1
, 1
, 1
, 1
6 2
6 2
9 ,
9 ,
7 2
7 2
N
z
8
8
9 ,
9 ,
3 1
3 1
3 1
3 1
2 4
2 4
2 4
2 4
8 ,
8 ,
#
1 ,
1 ,
1 ,
1 ,
, 2
, 2
, 2
, 2
D
E
C
C
P
P
P
P
C
C
C
C
S
P
P
P
P
C
P
C
P
C
C
C
P
P
U
P
U
P
C
C
C
C
_ I
_ I
C I
C I
U
U
U
U
R
C I
C I
_
C I
_
C I
S
S
S
S
C
C
C
C
L
L
P I
T
T
L
L
L
L
T
T
L
L
L
L
K
K
O
O
K
K
O
K
O
K
I T
K
K
K
K
_
_
P
P
s
s
P
s
P
s
F
F
s
s
s
s
O
#
#
#
#
N
3
1
1
3 3
6 6
3 3
P
S
P
S
3 3
o c
3 3
o c
P
S
P
S
3 3
6 6
o c
3 3
o c
0 0
0 0
o t
o t
o t
o t
o
o
o
o
f n
f n
f n
f n
3 .
6 .
3 .
w
w
3 .
3 .
w
w
3 .
6 .
3 .
p p
p p
p p
p p
D
M
M
r e
r e
g i
g i
r e
r e
g i
g i
M
M
M
M
M
M
M
M
E
d e
d e
d e
d e
H
H
M
M
n i
n i
M
M
n i
n i
H
H
H
H
H
H
H
H
F
z
z
A
w
w
w
w
i d
i d
i d
i d
z
z
z
z
z
z
z
z
a
a
a
a
-
-
U
a n
a n
a n
a n
h
h
h
h
-
-
-
i v
-
i v
-
i v
-
i v
-
-
w
C
n e
n e
n e
n e
L
w
w
w
P
P
P
C
P
e g
e g
e g
e g
u d
u d
u d
u d
P
s /
T
I C
I C
I C
I C
P
s /
s /
s /
U
m
o l
m
o l
m
o l
m
o l
r e
l a
l a
l a
l a
U
r e
r e
r e
C
e
w
e
w
e
w
e
w
l a i
C
l C
C
l C
l C
O
l a i
l a i
l a i
n e
n e
n e
n e
, t n
, t n
, t n
, t n
l C
1
o l
o l
c o
c o
c o
N
4
b a
b a
b a
b a
o c
c o
k c
k c
3 .
o c
o c
o c
P
C
P
C
D
s k
s k
4
s k
e l
e l
e l
e l
f n
C
C
s k
1
P
P
8
I
f n
f n
f n
r F
r F
d /
d /
d /
d /
I T
8
F
[ I
U
[ I
U
g i
/ w
/ w
/ w
M
g i
g i
g i
1
/ w
U
e e
e e
s i
s i
s i
s i
: 0
: 0
O
[
[
8
x e
x e
n e
x e
H
: 0
: 0
N
b a
b a
b a
b a
n e
n e
n e
x e
N
] 5
] 5
r
r
M
z
e t
e t
e t
C
b a
] 5
n u
] 5
n u
. e l
. e l
. e l
. e l
b a
b a
b a
e t
n r
n r
A
I T
n r
H
l C
l C
e l
i n
i n
n r
l C
l C
e l
e l
e l
T
l a
l a
z
l a
d /
O
c o
c o
g n
g n
l a
d /
d /
d /
c o
c o
P
N
s i
t S
t S
t S
s k
s k
s i
s i
s i
t S
O
ICS9248-92
s k
s k
b a
f
p o
p o
b a
b a
p o
r o
b a
W
p o
e l
e l
e l
e l
P
E
C
o c
o c
o c
o
R
o
t n
t n
w
t n
-
t n
r e
U
o r
o r
o r
o r
P
a l
a l
M
a l
a l
d n
d n
a
d n
d n
a n
s
s
e g
s
r e
s
r e
r e
r e
m
l a i
l a i
l a i
l a i
e
t n