Voltage Diagrams; Dsp Unit - Icom IC-7400 Service Manual

SECTION 12 VOLTAGE DIAGRAM

12-1 DSP UNIT

DSP UNIT
#01:80ns
#02:160ns
2.6V
#01:40ns C4
#02:80ns 0.0047
0.4V
2.3V 0V
0.9V
0V
L1 C1
EP2 2.2µ 0.0047
1
IC1
TC7WHU04FU 2 5
CP1
D Q
8 1 W1
C.P8S
7 2 3 6
CK Q
6 3
5 4
IC3
C6 R3 C8 C9 SN74AHC74PW
4
47p 47k 10p 5p
R2
470 X1
CR-628
R1
C2 C3
1M
33p 33p
1.7V
1.5V
0V
L51 C51
2.2µ 0.0047
CP301
IC51
TC7WHU04FU
8 1
7 2
6 3
5 4
W303
R52 X51
CR-709
100
L301 L302 L52
2.2µ 2.2µ 1.0µ
R51
C53 C52 C54
5p 1M 5p 0.01
R322
47
1
A20
2
VSS
3
A19
4
C301 A18
5
0.0047 A17
6
DVDD
7
A16
A15 8
A15
9
VSS
A14 10
A14
A13 11
A13
C302 0.0047 12
CVDD
A12 13
A12
A11 14
A11
C303 0.1 15
DVDD
A10 16
A10
A09 17
A9
18
IC301
VSS
A08 19
TMS320VC33PGE120
A8
A07 20
A7
A06 21
A6
A05 22
0.0047 A5
C304 23
DVDD
A04 24
A4
25
VSS
A03 26
A3
A02 27
A2
0.1 28
C305
CVDD
29
A01
A1
30
A00
A0
C306 0.1 31
DVDD
32
CP302 PAGE3
33
CP305 PAGE2
34
VSS
35
CP304 PAGE1
36
PAGE0
CP303
CP306
CP307
CP308
L3
L2
2.2µ
2.2µ
IC3 IC4
14 SN74AHC74PW 14 SN74AHC74PW
V+ C7
V+
GND 0.1
GND #01:10.4µs
7 7 #02:20.8µs
3.3V
IC3 0V
13 SN74AHC74PW 1 13
12 9 2 5 12 9
D Q D Q D Q
11 8 3 6 11 8
CK Q CK Q CK Q
10 4 10
IC4 IC4
SN74AHC74PW SN74AHC74PW
#01:5.2µs
#02:10.4µs
3.3V
0V
L801
IC801
2.2µ
SN74AHC244PW C802
0.001
1 20
ENA VCC
2 19
A1 ENB
3 18 8V CP801
YB4 YA1
4 17 FBSY CP811
A2 B4
5 16 FOK CP812
YB3 YA2
6 15 GND1 CP802
B3
A3
7 14 FSTB CP803
YA3
YB2
8 13 FCK CP804
B2
A4
9 12 FDAT CP805
YA4
YB1
10 11 DRES CP806
B1
GND
FINT
CP807
FENA CP808
FDIS CP809
GND1 CP810
Q201
XP4312
4 3
5 2
6 1
W302
W311
W312
Q301
DTC144EU
R323 R324
10k 10k
Q302
DTC144EU
C320
0.1
108
MEASUREMENT CONDITIONS
DVDD
107
frequency : 14.1MHz USB
CLKR0
106
SG input : off
FER0
105
Digital tester
VSS
104
Oxilloscope(20MHz)
DR0
103
Voltage at rx
TRST C321
102
0.1
TMS
101
CVDD
100
TDI
99
TDO
98
TCK
97
VSS
96 R320 4.7k
C322
EMU0
95 R321 4.7k
EMU1 0.0047
94
DVDD
93 D00
D0
92 D01
D1
91 D02
D2
90 D03
D3
89
VSS
88 D04
D4
87 D05
D5
86 C323 0.1
DVDD
85 D06
D6
84 D07
D7
83 C324 0.0047
CVDD
82 D08
D8
81 D09
D9
80
VSS
79 D10
D10
78 D11
D11
77 C325 0.0047
DVDD
76 D12
D12
75 D13
D13
74 D14
D14
73
D15
D15
CP360
PD
CP359
EMU1
CP358
TDI
CP357
TDO
CP356
TMS
CP355
EMU0
CP354
TCK
CP353
TRST
CP352
CP351
12 - 1
L101 L102
2.2µ 2.2µ
IC101
SN74HCT244APW C101
IC102
0.1
BU9480F
1 20
ENA VCC
2 19 8 1
VCC OUTR
A1 ENB
3 18 7 2
BCLK REF
YB4 YA1
4 17 6 3
SDATA GND
A2 B4
5 16 5 4
LRCLK OUTL
YB3 YA2
6 15
A3 B3
7 14
YB2 YA3
8 13
A4 B2
9 12 C102 C103
YB1 YA4 10 0.1
10 11
GND B1
A
IC201
DSP02 DSP02
M29W102BB
A09 1 40
A9 VSS B
A10 2 39 A08
A10 A8
A11 A07
3 38 W202
A11 A7 AGC1 DSP02 AGC1 DSP02 AGC1 DSP02
A12 4 37 A06
A12 A6 C202
A13 5 36 A05
A13 A5 0.1 C
A14 6 35 A04
A14 A4
A15 7 34 A03
A15 A3
8 33 A02
NC A2
9 32 A01 5 1
W201 W A1
10 31 A00 2
VCC A0
11 30 4 3
RP G
12 29 D00
E DQ0
D15 13 28 D01
IC202
DQ15 DQ1
D14 14 27 D02 TC7SH04FU
DQ14 DQ2
D13 15 26 D03
DQ13 DQ3
D12 16 25 D04
DQ12 DQ4
D11 17 24 D05 IC501
DQ11 DQ5
D10 18 23 D06 AK4528VF
DQ10 DQ6
D09 19 22 D07 1
DQ9 DQ7 VCOM
D08 20 21 2
DQ8 VSS AINR+
3
AINR-
4
AINL+
C201
5
0.1 AINL-
6
VREF
7
AGND
8
VA
9
P/S
10
MCLK
11
LRCK
12
BICK
13
SDTO
14
SDTI
W501
A B C
L401 2.2µ
D00
D01 1 16
QB VCC
D02 2 15
QC QA
D03 3 14
QD SI
D04 4 13
QE G
D05 5 12
QF RCK
D06 6 11
QG SCK
D07 7 10
QH SCLR
8 9
GND QH'
L406
C401
IC401
0.0047 2.2µ
SN74AHC595PW
C406 14
0.0047
IC406
V+
SN74AHC74PW 1
GND
7
5 2
Q D
6 3
IC406
Q CK
SN74AHC74PW
4
13
L403
C407
9 12
0.001
2.2µ Q D
IC403 8 11
Q CK
SN74AHCT374PW
20 1
VCC O-CTRL
19 2 OUT1 IC406
8Q 1Q 10
D15 18 3 SN74AHC74PW
8D 1D
D14 17 4
7D 2D
16 5 OUT2
7Q 2Q
15 6 OUT3
6Q 3Q
D13 14 7
6D 3D
D12 13 8
5D 4D
12 9 OUT4
5Q 4Q
11 10
CLK GND
C403
0.0047
OUT5
OUT6
OUT7
OUT8
D11
D10
D09
D08
L404 2.2µ
IC404 L405
SN74AHCT374PW
C408 2.2µ
20 1 0.001
VCC O-CTRL
D0H D0A
19 8Q 1Q 2 IC405
D07 BU4021BF
18 8D 1D 3
D06 1 16
17 7D 2D 4 D0H H VDD
D0G D0B 2 15 D0G
16 7Q 2Q 5 QF G
D0F D0C 3 14 D0F
15 6Q 3Q 6 QH F
D05 14 7 D0D 4 13 D0E
6D 3D D E
D04 13 8 D0C 5 12
5D 4D C QG
D0E 12 9 D0D D0B 6 11
5Q 4Q B SER
11 10 D0A 7 10
CLK GND A CLK
8 9
VSS P/S
C404
C405
0.0047
0.0047
D03
D02
D01
D00
3.36V
1.82V
R151
68
4.07V
7.61V
IC152 IC161
TK11218BM BA033FP
1 6
CONT VIN
2 5
GND GND
O I
3 4
N.BYPASS VOUT
G
C104
10
DSP02
L501 L502
2.2µ 2.2µ
R601
1.2k
2.83V
R501
4.7 R602 C601
4.7k 10
R607
4.7k
28 2.83V
AOUTR+
27
AOUTR-
26
AOUTL+
IC601a
25
AOUTL-
R603 BA15532F
24
DGND
390
23 1
VD
22
VT
21 R611 C602
DEM1
20 5.6k 0.0015
DEM0
19
PDN
18
DFS R604
17
CSN 390
16
CCLK
15
R605 R606
CDTI
1k 1k
3.93V
R655
4.7k
2.83V
KEYIN
R651
UNLK
390
1
IC651a
R659 C651
BA15532F
5.6k 0.0015
R652
390
2.83V
DI R653 R654
1k 1k
CK
L701
100µ
2.5V
R701 R703
4.7k 3.3k
C702
C701 R704 IC701b
100p µPC4570G2
RQI
270p 6.8k
2.5V
6
R702
4.7k
5
R707 R705 R706
IBS
6.8k
1k 3.3k
OBS C705
100p
3.84V
R708 C707 C706
1k 100 0.1
ROO
2.49V
R751 R753
4.7k 3.3k
C752
IC701a
R754
C751 100p µPC4570G2
6.8k
DRES 270p 2
2.49V
R752
4.7k
3
R757 R755 R756
3.3k
1k 6.8k
C755
100p
3.84V
C757
R758 C756
100
1k 0.1
R904
10k
J902
GND1 2 1
GND1 GND1
RQI
CK
GND1 GND1
RQO
OBSY
GND1 GND1
OUT1
STBO OUT3
OUT5
OUT7
W951 GND1 GND1
KEYIN
DRES 30 29 GND1
DO
D901
to MAIN
MA729
unit J1000
W952
5.01V
6.84V
IC171
TK11250BM
1 6
CONT
VIN
2 5
GND GND
3 4
N.BYPASS VOUT
W2
W151
W3
W902
W171 W152
L601
100µ
IC601
BA15532F
8
V+
GND
4
R609
4.7k
R608 R610 C606
IC601b
4.7k 4.7k 1
BA15532F
2 6
7
3 5
C605
0.1
L651
100µ
IC651
8 BA15532F
V+
GND
4
R657
4.7k
R656 R658 C655
4.7k
4.7k 1
2 6
7
3 5
IC651b
BA15532F
C654
0.1
IC701
µPC4570G2
8
V+
GND
J901
4
DSPI1 1 2 GND
GND GND
GND DSPI2
GND
GND
8V
8V
GND
GND
AGC2 AGC1
C708
GND GND
10
DSPO1 GND
7
GND GND
GND 21 22 DSPO2
C901
to MAIN
0.001
unit J1001
MAIN UNIT (1)
J1001
C758
10
2 1
1 DRIF GND
GND GND
GND DTAF
GND GND
8V 8V
GND GND
MONI DAGC
GND GND
DRAF GND
GND GND
GND 22 21 DTIF
J1000
192K
1 2
DGND NC
IBSY DGND DGND
DI DI DROW DWBY
DCK DDTW
DGND DGND
DO
DROR DDTR
STBO STBO
DRBY DSTR
DGND DGND
OUT2
CTFL NSOL
OUT4
TOFF RTDT
OUT6
VSOL DCBY
OUT8
NC NC
DGND DGND
UNLK DSKY DSST
DRES DGND
29 30
R905 R906
10k 10k