3 8
5
NC
5 8
5 4
5 2
5 3
2 5
V R EF
2 4
V C
RL Y A
2 8
RL Y B
6
2 9
RI N GD
+
-
1
2
3
C1 8 C C 2 2 1
R7
0
# 2
B A 1 4 7 4 1
2 1
A V DD
2 2
A GND
3 0
A GND
R 2 8 8 F
C1 9
CC 1 0 4
R4 1 0
M 5 V
R2 5
M 0 V
A R EF
R6
1 0 0 K
2 4 C
C1 6
CC1 0 4
RI N
Z D 4
HZ U5 . 1 B 1
1 5
D1
D2
D0 R
D1 R
D2 R
6 8
1 7
6 7
1 8
D4
D5
D6
D7
D4 R
D5 R
D6 R
D7 R
RD
L WR
M RS T
M CE
1 6 C
1 6 C
1 6 C
1 6 C
DRB U S
D3
D3 R
1 6
A B US
5 6
4 1
3 6
1 1
V D D
A 0
2 0
A 1
6 6
A 2
6 5
6 3
A 4
1 4
9
D0
A 1
A 2
A 3
A 5
M I NT
1 6 C
# 1
RS T
5 9
CS
6 2
RD
6 0
WR
6 1
I R Q
8
X TL I
1 2
X TL O
1 3
T D C L K
5 0
RX D
3 5
5 7
T XD
RL S D
5 1
CT S
3 7
RT S
7
E Y E SY C
4 6
E Y E C L K
4 7
E Y E XY
4 8
V D D
V D D
V D D
C2
1 0 0 / 6 . 3 V
R3 5
NOT A S S Y
C7
CC 6 P
R1
1 5 0
+ 5 V
5 6 . 4 4 8 M HZ
1 0 / 1 6 V
S 0 V
T XO
+
-
7
6
5
C2 1
CC2 2 1
# 2
B A 1 4 7 4 1
R1 3
1 0 K F
L 1
2 . 2 H
X T 1
C8
CC 1 0 3
2 4 B
R1 2
1 0 K F
A R EF
C4
1 0 0
6 . 3 V
C1 5
C2 5
C3 0
C2 4
CC 1 0 4 x 4
M O V
A 3
6 4
A 4
C1 7
CC 1 0 4
R9
5 6 K F
R1 0
M 0 V
2 3
RI N
2 6
2 7
T XA 2
T XA 1
3 2
P OR
R4
4 7 0
M O V
C1 3
CC1 0 4
R3
4 7 0
M 5 V
C5
A R EF
C6
CC 1 2 P
S 0 V
C1
1 6 V / 1 0
C3
1 0 / 1 6 V
M 0 V
C1 1
CC1 0 4
C1 0 C C 1 0 4
3 4
S P K R
RI
DT R
DS R
X TCL K
RDCL K
G P 0
NC
4 9
NC
4 2
NC
4 5
4 4
NC
NC
4
3
3 9
2
1
3 3
NC
NC
NC
NC
NC
2 2 B
M I N T H
V S S
5 5
4 3
4 0
1 9
1 0
V S S
V S S
V S S
V S S
3 1
T L S W
M RS T
M CE
RD
L WR
+ 5 V
S 0 V
1
2
3
6
7
8
9
2 0
4
5
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
A BUS
DR B U S
A 5
D7 R
A 1
A 2
A 3
A 4
D0 R
D1 R
D2 R
D3 R
D4 R
D5 R
D6 R
1 4 B
1 4 B
1 5 B
1 4 B
1 4 B
P 1
9 2 1 0 B - 1 - 2 0 Z
C9
CC1 0 4
R2 0 0
R2 4 0
R2 3 0
R2 2 0
R2 1 0
R8
5 6 K F
S 0 V
M 0 V
C2 0
CC 2 2 1
R2
NOT A S S Y
S 0 V
M 0 V
R3 4
NOT A S S Y
S 0 V
M 0 V
+ 5 V
+ 5 V
R4 0
1 0 K
R3 7
1 0 K
R3 8
1 0 K
R3 6
1 0 K
R3 9
1 0 K
+ 5 V
+ 5 V
)(
)
(
R1 1 1 0 0 K
M A I N
P 1 2
A
B
1 2 3
C
D
1 2 3 5 6
A
B
C
D
6
4
4 5
B
Modem PCB 1/2