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12-5 UT-121 (Optional Product ; CODEC UNIT for IC-91AD)
VOLTAGE LINE
Explanatory notes
TX LINE
RX LINE
COMMON LINE
0.001
C214
100
R213
390K
R211
0.1
C213
47P
C110
22P
C209
100K
R305
120K
R301
0.1
C104
0.1
C208
0.1
C303
47K
R212
0.001
C111
22K
R210
0.1
C113
100K
R307
0.1
C109
0.027
C207
1
C304
22
C1
47K
R2
330
R105
0.001
C360
UNR9215J
Q200
NJM2115V
IC300
1
2
3
4
5
6
7
8
0.001
C200
0.1
C108
2SA1362
Q50
22
R1
CMX589AD5
IC202
1
XTAL
2
XTAL/CLK_RX
3
CLKDIVA
4
CLKDIVB
5
RX_HOLD
6
RXDCACQ
7
PLLACQ
8
RX_PSAVE
9
VBIAS
10
RXFB
11
RX_SIG_IN
12
VSS
13
DOC2
14
DOC1
15
BT
16
TXO
17
TXE
18
TXP
19
TXD
20
RXD
21
RXC
22
TXC
23
S/N
24
VDD
2SC4081
Q100
0.1
C106
0.001
C54
0.1
C358
10
R310
AMBE-2020
IC101
1
GND
2
NC
3
NC
4
NC
5
NC
6
NC
7
NC
8
VDD
9
GND
10
GND
11
VDD
12
VDD
13
NC
14
NC
15
NC
16
NC
17
NC
18
NC
19
NC
20
EPR
21
NC
22
NC
23
VDD
24
ENCODER_EN
25
GND
26
GND
27
CODEC_RX_CLK
28
CHAN_RX_CLK
29
CODEC_RX_STRB
30
CHAN_RX_STRB
31
CODEC_RX_D
A
T
A
32
CHAN_RX_D
A
T
A
33
CODEC_TX_CLK
34
CHAN_TX_CLK
35
GND
36
VDD
37
CODEC_TX_STRB
38
CHAN_TX_STRB
39
VDD
40
GND
41
CODEC_TX_D
A
T
A
42
CHAN_TX_D
A
T
A
43
NC
44
VDD
45
VDD
46
VDD
47
VDD
48
VDD
49
VDD
50
GND
51
CLOCK_MODE
52
GND
53
GND
54
VDD
55
NC
56
GND
57
VDD
58
NC
59
NC
60
NC
61
NC
62
NC
63
GND
64
VDD
65
GND
66
NC
67
X1
68
X2/CLKIN
69
RESETN
70
RATE_SEL0
71
RATE_SEL1
72
RATE_SEL2
73
RATE_SEL3
74
RATE_SEL4
75
CHANN_SEL0
76
VDD
77
CHANN_SEL1
78
NC
79
SOFT_EN
80
BA
UD_SEL0
81
BA
UD_SEL1
82
SLIP_EN
83
SLEEP_EN
84
CODEC_SLE0
85
CODEC_SEL1
86
V
AD_EN
87
VDD
88
GND
89
GND
90
VDD
91
NC
92
NC
93
NC
94
NC
95
NC
96
NC
97
NC
98
NC
99
NC
100
NC
1
C301
EP352
CR-821
X200
1
GND
2
GND
3
OUT
4
VCC
100K
R304
0.1
C201
0.1
C300
0.001
C50
0.1
C112
33K
R306
0.1
C102
0
R202
EP350
EP200
10
C2
47K
R352
47K
R205
EP202
0.001
C211
4.7K
R50
CP201
10K
R217
47K
R300
0.022
C351
0.1
C103
EP351
1k
R107
47K
R354
1K
R104
47K
R206
47K
R203
SN74AHC1G66HDBV3
IC203
1
2
3
4
5
220
R216
0.001
C216
0.1
C353
0.001
C117
47K
R303
AMODIN
D
AFOUT
BT
ONE
100K
R208
47K
R100
47P
C355
0.1
C357
CP203
NJM2115V
IC301
1
2
3
4
5
6
7
8
2SA1362
Q1
EP201
0.1
C203
MA2S728
D100
CP1
CP202
100
R106
47K
R204
0.1
C114
0.1
C350
1
C210
EP203
0.1
C202
EP1
0.1
C101
0.1
C302
10K
R3
0.1
C107
0.001
C51
0.1
C100
EP300
100K
R302
CP2
UNR9215J
Q201
100
R353
100K
R215
SN74LVC1G04DCK
IC102
1
NC
2
A
3
GND
4
Y
5
VCC
0.001
C204
2.2
C356
0.027
C206
EP100
CR-820
X100
1
GND
2
GND
3
OUT
4
VCC
2SC4081
Q202
XP1501
Q51
1
2
3
4
5
R1111N321B
IC1
1
VDD
2
GND
3
CE
4
NC
5
VOUT
47K
R207
10
C310
0.047
C352
0.0022
C212
100K
R108
100K
R209
0.1
C116
1k
R214
0.1
C3
0.001
C53
1K
R351
220
R109
2.2
C52
0.1
C354
0.1
C205
SN74AHC2G74HDCT3
IC201
1
CK
2
D
3
Q
4
GND
5
Q
6
CLR
7
PR
8
VCC
AD73311ARSZ
IC350
1
VOUTP
2
VOUTN
3
AVDD1
4
AGND1
5
VINP
6
VINN
7
REFOUT
8
REFCAP
9
AVDD2
10
AGND2
11
DGND
12
DVDD
13
RESET
14
SCLK
15
MCLK
16
SDO
17
SDOFS
18
SDIFS
19
SDI
20
SE
680
R350
UNR9215J
Q2
AMBECLK
SI
DCEL
SO
SCLK
SI
AMBEEPR
AMBERXD
AMBERES
AMBETXD
TXDT
AMBERES
TXCK
SCLK
SEN
AMBESTB
SO
SEN
ACQ
RXDT
A
GND
AGND
RXCK
DVC
+3V
+3D
CODEC UNIT
DMOD
AMODIN
BTONE
AGND
RX FM: 5.08V
RX DV: 5.06V
RX FM: 0.95V
RX DV: 3.44V
RX FM: 0V
RX: 3.28Vp-p
RX: 3.44Vp-p
RX DV: 0.4V
RX FM: 0V
RX DV: 1.52V
RX FM: 0V
RX DV: 0.4V
RX FM: 0V
RX DV: 1.38V
J1
to LOGIC
unit J400
DVC
TXCK
TXDT
RXCK
RXDT
DCEL
AMBECLK
AMBERES
AMBESTB
AMBEEPR
BTONE
AMODIN
DMOD
ACQ
AMBETXD
AMBERXD
AGND
DAFOUT
+3V
DAFOUT
12 - 5