參數(shù)資料
型號(hào): ICS94215
英文描述: Replaced by SN74ABT16540A : 16-Bit Buffers/Drivers With 3-State Outputs 48-TSSOP -40 to 85
中文描述: 可編程系統(tǒng)時(shí)鐘芯片為AMD - k7的⑩處理器
文件頁(yè)數(shù): 7/18頁(yè)
文件大?。?/td> 146K
代理商: ICS94215
7
ICS94215
0442C—07/03/02
Byte 1: CPU, Active/Inactive Register
(1= enable, 0 = disable)
T
7
6
5
4
3
2
I
B
B
B
B
B
B
B
#
N
-
6
4
-
-
0
4
-
I
P
D
W
X
1
1
X
1
X
P
N
O
I
T
P
I
R
C
S
E
D
t
t
t
t
t
t
#
2
U
v
R
#
3
S
F
R
D
S
L
E
S
(
U
P
C
e
m
o
C
v
R
(
S
P
F
C
(
K
)
e
L
C
T
U
O
#
8
4
e
0
K
l
y
e
m
i
*
e
_
M
_
4
L
A
2
C
1
t
B
4
4
4
1
h
e
u
T
b
"
e
a
.
p
n
d
n
a
"
)
0
t
B
-
1
Byte 2: PCI, Active/Inactive Register
(1= enable, 0 = disable)
T
7
6
5
4
3
2
1
0
I
B
B
B
B
B
B
B
B
B
#
N
-
7
-
3
1
2
1
1
1
0
1
8
I
P
D
W
X
1
1
1
1
1
1
1
P
N
O
I
T
P
I
R
C
S
E
D
t
t
t
t
t
t
t
t
#
C
0
I
S
C
v
R
C
I
C
P
I
C
P
I
C
P
I
C
P
I
C
P
F
P
(
F
_
)
e
4
K
3
K
2
K
1
K
0
K
K
L
L
L
L
L
L
C
C
C
C
Notes:
1. Inactive means outputs are held LOW and are disabled
from switching.
2. Latched Frequency Selects (FS#) will be inverted logic
load of the input frequency select pin conditions.
T
7
6
5
4
3
2
1
0
I
B
B
B
B
B
B
B
B
B
#
N
8
2
9
2
1
3
2
3
4
3
5
3
7
3
8
3
I
P
D
W
1
1
1
1
1
1
1
1
P
N
O
I
T
P
I
R
C
S
E
7
6
5
4
3
2
1
0
D
t
t
t
t
t
t
t
t
M
M
M
M
M
M
M
M
A
A
A
A
A
A
A
A
R
R
R
R
R
R
R
R
D
D
D
D
D
D
D
D
S
S
S
S
S
S
S
S
Byte 4: SDRAM , Active/Inactive Register
(1= enable, 0 = disable)
T
7
6
5
4
3
2
1
0
I
B
B
B
B
B
B
B
B
B
#
N
-
-
-
-
-
-
8
4
2
I
P
D
W
1
1
1
X
X
1
1
1
P
N
O
I
T
P
I
R
C
S
E
D
)
e
)
e
)
e
#
t
t
t
t
t
t
t
t
v
R
v
R
v
R
D
O
M
1
S
F
v
R
(
F
E
R
F
E
R
(
(
(
E
#
)
e
1
0
Byte 5: Peripheral , Active/Inactive Register
(1= enable, 0 = disable)
Byte 3: SDRAM, Active/Inactive Register
(1= enable, 0 = disable)
T
I
B
B
B
B
B
B
B
B
B
#
N
-
-
-
-
-
-
-
-
I
P
D
W
0
0
0
0
0
1
1
0
P
N
O
I
T
P
I
R
C
N
N
N
N
N
N
N
N
S
(
(
(
(
(
(
(
(
E
d
d
d
d
d
d
d
d
D
e
e
e
e
e
e
e
e
7
6
5
4
3
2
1
0
)
)
)
)
)
)
)
)
v
R
v
R
v
R
v
R
v
R
v
R
v
R
v
R
Byte 6: Peripheral , Active/Inactive Register
(1= enable, 0 = disable)
Note: Don’t write into this register, writing into this
register can cause malfunction
T
7
6
5
4
3
2
1
0
I
B
B
B
B
B
B
B
B
B
#
N
-
-
6
2
5
2
7
1
8
1
0
2
1
2
I
P
D
W
1
1
1
1
1
1
1
1
P
N
O
I
T
P
I
R
C
S
E
D
)
e
)
e
t
t
t
t
t
t
t
t
v
R
v
R
(
M
8
4
4
_
4
2
R
D
S
R
D
S
R
D
S
R
D
S
(
z
M
M
M
M
M
H
8
A
A
A
A
z
H
1
0
1
1
9
8
Note:
* It is recommended to drive this bit to 0.
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