NX-800
SCHEMATIC DIAGRAM
1.62V
3.28V
1.62V
1.62V
4.98V
3.28V
3.28V
1.62V
1.62V
3.28V
1.62V
R807
150k
0.01u
0.1u
6
3
LEVEL
SHIFT (TXD)
R805
R769
4.7k
C747
0.01u
R756
C746
C743
0.01u
R758
10k
15k
R763
18k
0.01u
SIDE TONE MUTE
AF SW
(AI TONE OPT9/VREF)
VEE
GND
SSM3K15TE(F)
Q703
TONE SW
12k
R772
R771
100k
C753
0.01u
R782
15k
R785
10k
C769
C768
0.01u
R778
390k
4
C775
0.1u
R788
22k
0.01u
R791
560k
CH1
A
5
3.3k
R846
R792
1k
C785
0.1u
TC75S51FE(F)
C792 47p
oUT
VDD
R814
100k
C786
0.1u
R808
10k
82k
IC714
IN-
3
1
2
VSS
IN+
C798
0.1u
R819
0
C796
4
5
0.1u
15k
27k
R770
C745
0.01u
R764
120k
TC7W53FK(F)
SUM AMP
TC75W51FK(F)
INH
CoMMoN
56k
C749
C752
330k
R777
C767
0.1u
1
2
VREF
C754
1000p
100k
C761
0.01u
R781
2
3
4
100k
R780
R783
0
1
R794
IC710
CH0
VCC
8
7
R790
(AF) / VREF
R800
4.7k
R803
6
5
VSS
C779
C778
0.1u
IC711
8
7
VDD
VREF
R795
68p
0
R802
R799
56k
RX SUM
DAC
VIN8
V
oUT8
V
oUT7
VIN7
GND
RESET
VD
AREF
VIN6
V
oUT6
V
oUT5
VIN5
20
15
R836
0
14
13
C774
1000p
19
18
17
16
D0
24
23
22
21
5
10
IC712
M62364FP-F
11
12
V
oUT4
VIN4
6
8
9
7
LD
DI
VIN3
CLK
V
oUT3
C777
1000p
1u
2
3
1
4
V
oUT1
V
oUT2
VIN1
VDD
VIN2
R833 100
R834 100
R835 100
VCC
CoMMoN
10k
AFO BEFF
AO SW
C788
0.1u
0.1u
4
2
1
3
VGS REC SEL
TC7W53FK(F)
CH0
CH1
A
5
7
8
6
IC713
INH
GND
VEE
R810
1k
C797
C813 10u
C790 10u
PROTECTION
LINE
(DI)
C789 4.7u
SW
OPT10
D707
EMZ6.8N
D706
EMZ6.8N
(DEO)
R822
100
R818
33k
R821
0
R820
470k
0.1u
2SA1832(GR)F
47k
Q708
R817
C799
R776
220k
220k
2
1
2
1
6
VREF
33A_2
TV1
TV2
C776
VCO_MOD
TCXO_MOD
MP
SDO0
SCK0
/EVCS
STSW
T
ONESW
BEEP
T
ONE
AFO
AI
OPT9
OPT10SEL
OPT6
AO
50C
PROTECTION
LINE
/INAMT
MI2
MI1
ME
ME
MI1
MI2
AFO
VIN8
/INAMT
33A-2
50C
OPT10
DI
DEO
1
1
1
1
1
2
2
9
9
9
9
9
10
11
11
13
13
13
X57-739 13/16
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BJ
BK
BL
BM
TX-RX UNIT (X57-7390-10)