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CN701
SW700
1
SXL[1]
1
2
3
SW701
1
SXL[2]
3
2
3
1
SRL[2]
4
2
3
SW702
1
SRL[1]
2
2
3
SW703
N.C.
5
N.C.
6
1:SO
3:EXT
ISDN TRANSFORMER
R704
T700
39
4
13
1
1
+5V
3
14
D700
D703
2
2
2
15
R705
39
3
3
1
16
R702
R706
8.2K
1.8K
5
9
1
1
+5V
6
10
D704
D707
2
2
7
11
R703
R707
3
3
8
12
8.2K
1.8K
POWER
1
+24V
2
5V
3
7.7MHz
SW704
0V
1
-15V
2
3
SW705
1:ON
3:OFF
ISDN I/F
IC700
47
62
SX1
PCMOUT
63
PCMIN
+5V
R708
2.7K
51
DU
R709
48
52
SX2
DD
5V
2.7K
59
0V
SDS
44
54
SR2
DCL
53
FSC
6
RDN
5
WRN
3
ALE
4
C5N
45
SR1
18
A0
19
A1
20
A2
41
21
XTAL1
A3
22
A4
23
A5
24
A6
42
25
XTAL2
A7
40
8
+5V
C768
D0
60
9
INT1N
D1
61
10
INT0N
D2
64
11
FBOUT
D3
58
13
D4
ACLN
29
14
DACKAN
D5
15
D6
16
D7
1
27
+5V
VDD
DRQTB
12
28
VDD
DRQRB
30
26
VDD
DACKBN
49
VDD
43
VDDA
35
AMODE
+5V
R710
31
56
CH0
MODE0
32
47K
CH1
33
57
CH2
MODE1
36
TP
37
R711 33
TP
38
50
TP
SCLK
7
VSS
17
2
VSS
INTN
39
L700
VSS
55
34
VSS
RES
46
VSSA
NOMAL : 0V
RESET : 5V
5V
0V
5V
4MHz
7.98MHz
0V
5V
1.5MHz
0V
5V
0V
+5V
IC701
3
14
A
QA
+5V
4
13
B
QB
5
12
C
QC
6
11
D
QD
IC702
2
1
4
CK
CLR
+5V
7
15
ENP
RCO
10
ENT
9
LOADN
+5V
+5V
16
5
IC701
1
N.C.
3
IC702
8
CN700
5
HWR[1]
6
HWS[1]
4
LICLK
3
IFH[1]
18
REN
16
WELN
10
S0CSN[2]
R714
0
48
LA[1]
R715
0
R716
0
47
LA[2]
R717
0
R718
0
46
LA[3]
R719
0
R720
0
45
LA[4]
R721
0
44
LA[5]
R722
0
R723
0
43
LA[6]
R724
0
R725
0
42
LA[7]
R726
0
R727
0
41
LA[8]
R728
0
R729
0
36
LD[0]
35
LD[1]
34
LD[2]
33
LD[3]
32
LD[4]
31
LD[5]
30
LD[6]
29
LD[7]
512kHz
22
S/T[2]
2
S0CLK[2]
23
1S0CD
2
12
INTN
24
LRST[2]
R713 33
1
7.68MHZ
+5V
19
+5V
20
+5V
21
+5V
+24V
13
+24V
14
+24V
15
+24V
-15V
7
-15V
8
-15V
9
-15V
25
GND
26
GND
27
GND
37
GND
38
GND
39
GND
11
N.C.
17
N.C.
28
N.C.
40
N.C.
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