ics9248-98 Integrated Device Technology, ics9248-98 Datasheet - Page 6

• Manufacturer Part Number: ics9248-98
• Description: Frequency Generator & Integrated Buffers For Celeron & Pii/iii
• Manufacturer: Integrated Device Technology

Byte 3: SDRAM, Active/Inactive Register
(1= enable, 0 = disable)
Byte 5: Peripheral , Active/Inactive Register
(1= enable, 0 = disable)
Notes:
1. Inactive means outputs are held LOW and are disabled
2. Latched Frequency Selects (FS#) will be inverted logic
0313F—08/04/04
Byte 1: CPU, Active/Inactive Register
(1= enable, 0 = disable)
ICS9248-98
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
load of the input frequency select pin conditions.
from switching.
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
t i
I
T I
T I
T
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
I P
1
2
3
I P
I P
2
3
3
, 8
, 7
, 4
7 4
6 4
, 1
, 7
, 0
2
0 4
3 4
4 4
2
N
2
-
-
-
-
-
N
-
-
-
-
-
N
-
-
-
6
5
2
3
1
3
3
2
#
#
#
, 9
, 5
, 8
1
2
8
P
P
W
P
1
1
1
1
1
1
1
1
W
X
1
1
1
1
1
1
1
W
D
X
1
1
1
1
1
1
1
D
D
R (
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R (
I
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R
R
O
L
R (
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S
R (
C
C
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E
s e
s e
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(
L
4
2
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S
S
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A
D
t a
P
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F
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R
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8
4
D
D
D
t a
P
r e
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U
U
1
0
h c
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R
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M
h c
A
C
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e v
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d e
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H
A
A
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(
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S
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: 7
: 3
# 2
C
0
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C
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) 0
#
R
C
) 8
R
P I
R
P I
P I
I T
I T
T
O
O
I
N
O
N
N
6
Byte 4: Reserved , Active/Inactive Register
(1= enable, 0 = disable)
Byte 2: PCI, Active/Inactive Register
(1= enable, 0 = disable)
Byte 6: Peripheral , Active/Inactive Register
(1= enable, 0 = disable)
Note: Don’t write into this register, writing into this
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
i B
i B
i B
i B
i B
i B
i B
i B
t i
t i
t i
t i
t i
t i
t i
t i
T I
t i
t i
t i
t i
t i
t i
t i
t i
T I
T I
7 t
6 t
5 t
4 t
2 t
0 t
3 t
1 t
7
6
5
4
3
2
1
0
6
4
2
0
7
5
3
1
register can cause malfunction
I P
I P
I P
N
-
-
-
-
-
-
-
-
2 1
0 1
3 1
1 1
7
8
N
-
-
N
-
-
-
-
-
-
-
-
#
#
#
P
P
P
W
X
X
W
1
1
1
1
1
1
W
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
D
D
D
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R (
R (
R (
L
R (
L
R (
R (
R (
P
P
P
P
P
P
R
R
R
R
R
R
R
R
t a
t a
s e
s e
s e
s e
s e
s e
C
C
C
C
C
C
e
e
e
e
e
e
e
e
h c
h c
s e
s e
C I
C I
C I
C I
C I
C I
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r e
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e s
e s
e s
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d e
d e
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L
L
L
L
L
L
v r
v r
v r
v r
v r
v r
v r
v r
e v
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D
K
K
K
K
K
K
D
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F
) d
F
) d
D
d e
d e
d e
d e
d e
d e
d e
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) d
_
4
3
2
1
0
E
S
S
E
E
F
# 1
# 3
S
S
S
(
(
(
(
(
(
(
(
C
N
N
N
N
N
N
N
N
C
C
R
t o
t o
t o
t o
t o
t o
t o
t o
R
R
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P I
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P I
I T
I T
I T
O
O
O
N
N
N