ics9248-172 ETC-unknow, ics9248-172 Datasheet - Page 5

• Manufacturer Part Number: ics9248-172
• Description: Single Chip, System Clock Piii/1651 Chipset 147mhz; Sdram Clocks
• Manufacturer: ETC-unknow

Byte 3: SDRAM, Active/Inactive Register
(1= enable, 0 = disable)
Byte 5: Peripheral , Active/Inactive Register
(1= enable, 0 = disable)
Byte 1: CPU, Active/Inactive Register
(1= enable, 0 = disable)
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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
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
t i
T I
T I
7
6
5
4
3
2
1
0
6
4
2
0
7
5
3
1
7
6
5
4
3
2
1
0
I P
I P
I P
0 3
7 2
6 2
5 2
1 3
N
-
-
-
-
-
-
-
-
2 2
6 4
7 4
0 1
N
-
-
-
9
2
7
N
-
#
#
#
P
P
W
P
0
0
1
1
1
1
1
1
W
W
X
X
X
X
1
1
1
1
1
1
1
D
1
1
1
1
1
D
D
R (
R (
R (
R (
R (
R (
t s
t s
t s
t s
i B
i B
i B
i B
F
A
A
8 4
O I
R
d
C
C
p o
p o
p o
p o
S
S
S
S
S
F
F
F
s e
s e
s e
s e
s e
s e
( t
( t
( t
( t
f e
S
P
S
S
S
D
D
D
D
D
G
G
E
P
M
A
# 3
# 0
# 1
# 2
r e
r e
r e
r e
r e
r e
U
: 1
: 1
: 1
: 1
U
R
R
R
R
R
C
C
C
C
F
u a
1 P
0 P
P
H
0
C
e v
e v
e v
e v
e v
e v
P
P
P
P
C
A
A
A
A
A
) 0
) 0
) 0
) 0
C I
t l
U
, U
, U
, U
L
z
M
M
M
M
M
D
L
-
) d
) d
) d
) d
) d
) d
=
=
=
=
=
K
K
D
1
D
8
9
0 1
1 1
2 1
E
l c
S
S
A
X
0
0 0
1 0
0 1
1 1
1
1
E
S
c o
E
D
D
G
=
S
S
C
r o
R
R
s k
P
1
C
C
C
C
C
C
X
R
A
A
P
P
P
P
l c
R
2
R
M
M
P I
U
U
U
U
X
c o
P I
P I
_
_
_
_
,
I T
l c
s k
S
S
S
S
I T
A
I T
T
T
T
T
c o
G
O
O
O
O
O
O
O
P
s k
P
P
P
P
N
N
N
l c
w
w
w
w
c o
l l i
l l i
l l i
l l i
s k
5
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
Notes:
1. Inactive means outputs are held LOW and are disabled
2. Latched Frequency Selects (FS#) will be inverted logic
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
B
B
i B
from switching.
load of the input frequency select pin conditions.
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
3 t
2 t
0 t
0
1 t
7
6
5
4
3
2
1
6
4
2
0
7
5
3
1
register can cause malfunction
I P
I P
I P
3 4
2 4
9 3
8 3
7 3
6 3
3 3
2 3
N
0 2
9 1
8 1
4 1
2 1
5 1
3 1
N
-
N
-
-
-
-
-
-
-
-
#
#
#
P
P
P
W
1
1
1
1
1
1
1
1
W
W
X
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
D
Advance Information
D
D
S
S
S
S
S
S
S
S
M
P
P
P
P
P
P
P
D
D
D
D
D
D
D
D
R
R
R
R
R
R
R
R
C
C
C
C
C
C
C
R
R
R
R
R
R
R
R
e
e
e
e
e
e
e
e
O
C I
C I
C I
C I
C I
C I
C I
e s
e s
e s
e s
e s
e s
e s
e s
A
A
A
A
A
A
A
A
D
M
M
M
M
M
M
M
M
L
L
L
L
L
L
L
E
v r
v r
v r
v r
v r
v r
v r
v r
ICS9248-172
K
K
K
K
K
K
K
#
0
1
2
3
4
5
6
7
D
D
d e
d e
d e
d e
d e
d e
d e
d e
D
5
4
3
2
1
0
_
E
E
F
E
S
S
(
(
(
(
(
(
(
(
S
N
N
N
N
N
N
N
N
C
C
C
R
t o
t o
t o
t o
t o
t o
t o
t o
R
R
P I
P I
) e
) e
) e
) e
) e
) e
) e
) e
P I
I T
I T
I T
O
O
O
N
N
N