133
SCHEMATIC DIAGRAM /
原理图
NXR-810
X53-449 4/6
T
S
R
Q
P
A
A
A
A
A
A
A
-t
/EPTT
SPSD1
/ioiNT
BER_DATA
/EPTT_5V
i2CDA
RXD2
TXD0
i2CCK
RXD0
/HK
BER_CLK
TXD0_RSo
i2CCK
RXD0_RSi
BER_DATA_5V
i2CDA
BER_CLK_5V
AUXio3
SC
AUXio2
AUXio4
Ai3
AUXio1
AUXio6
Ai2
AUXio5
Ai1
SPSCLK1
LDR
RXD2_DiS
/RiNT
/FRST
BiCK
SDTi
LRCLK
TXD2
/BER_EN
/PTT
RSSi
SPSD1_DiS
SPSCLK1_DiS
SR_oE_DiS
EXT_MoN
/PDN
EXT_RSSi
TXD2_DiS
C61
1000p
1
2
3
4
5
IN+B
6
IN-B
7
oUTB
8
VDD
R85
10k
R137
100k
C81
1000p
R133
4.7k
R118
0
R106
10
C87
1000p
50M
C63
10u
C67
0.1u
D3
1SS388F
C90
0.1u
R74
100k
1
2
3
4
5
IN+B
6
IN-B
7
oUTB
8
VDD
C49
1u
R124
10k
C75
0.1u
C70
0.22u
R107
10k
R150
100k
R112
100k
R90
470
R102
100k
R83
100k
R111
100k
C104
0.1u
1
GND
2
C1-
3
V-
4
TIN
5
RoUT
6
RIN
7
ToUT
8
SD
9
C1+
10
VCC
C69
1000p
R87
330k
R312
100k
R81
100k
R122
10k
1
GPB4
2
GPB5
3
GPB6
4
GPB7
5
VDD
6
VSS
7
NC_1
8
SCL
9
SDA
10
NC_2
11
A0
12
A1
13
A2
14 RESET
15
INTB
16
INT
A
17
GP
A0
18
GP
A1
19
GP
A2
20
GP
A3
21
GP
A4
22
GPA5
23
GPA6
24
GPA7
25
GPB0
26
GPB1
27
GPB2
28
GPB3
R99
100k
C88
0.1u
C51
1u
C95
2p
R142
100k
C68
0.01u
R101
10k
C107
0.1u
R92
100k
C73
47p
C105
0.1u
R110
6.8k
R123
47k
C56
0.1u
C89
1000p
R509
22k
R108
180k
R93
100k
C96
2p
R105
330k
R109
100k
1 G1
2 A1
3 Y2
4
GND
5
A2
6
Y1
7
G2
8
VCC
C65
1000p
C66
0.01u
C52
27p
R89
3.3k
R95
22
C100
0.1u
R103
100k
1
MCLK
2
BICK
3
SDTI
4
LRCK
5
PDN
6
DFS0
7
DFS1
8
DEM
9
DIF0
10
RoUT
11
LoUT
12
VCoM
13
VSS
14
VDD
15
DIF1
16
TEST
R508
10k
L7
C60
1000p
R78
1k
R149
100k
C64
1u
C62
10u
1
32KoUT
2
SCL
3
SDA
4
INTRB
5
VSS
6
7
8
9
10
R88
10
R151
100k
R131
4.7k
R80
82k
TH1
100k
R510
10k
D2
MA2S111-F
C74
100p
R113
1k
C72
0.22u
CN22
C106
0.1u
R100
100k
CN23
R282
100k
R94
100k
R121
100k
1
1G
2
1A1
3
2Y4
4
1A2
5
2Y3
6
1A3
7
2Y2
8
1A4
9
2Y1
10
GND
11
2A1
12
1Y4
13
2A2
14
1Y3
15
2A3
16
1Y2
17
2A4
18
1Y1
19
2G
20
VCC
R82
100k
C57
0.1u
C58
680p
C80
0.01u
R104
39k
1
NC
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
11
12
13
14
15
16
17
18
19
20
R145
100k
R79
0
(A)
3.3V
5V
(Y)
3.3V
5V
50M
50M
33A
33A
SB
SB
33M
33BU
33M
33M_1
SBC
SBC
33M_2
33M_2
AMP_SW
/AF_MUTE
/AF_MUTE
AMP_SW
32K
32K
33BU
/RST
DETECTOR
SURGE
PROTECTOR
SQDAC
i2CDA_5V
i2CCA_5V
RXD0_RSo
TXD0_RSi
/FRST_io
33M
MOD
TXAF
MOD
TXAF
IC14
AK4386VTP
CODEC
INTRA
CLKC
oSCoUT
oSCIN
VDD
IC17
R2023T
RTC IC
IC18
TC74VHCT244AFK
BUFFER
IC19
TC7MBD3245AFK
BUFFER
B8
B7
B6
B5
B4
B3
B2
B1
oE
VCC
X2
L77-1802-05
oUT
A
IN-A
IN+A
VSS
IC13
TC75W51FK(F)
AF AMP
D1
RB706F-40
DETECTOR
2SC4617(S)
Q4
DC SW
IC15
TC75W51FK(F)
AF AMP
oUT
A
IN-A
IN+A
VSS
IC21
ADM101EARMZ
RS-232C
DRIVER/RECEIVER
IC23
TC7WT125FUF
NAND GATE
IC22
MCP23017TE/ML
I/O EXPANDER
3.3V
242mVrms
CONTROL UNIT (X53-4490-10)