Icom IC-7600 Service Manual page 108

SECTION 10. VOLTAGE DIAGRAM
LOGIC UNIT (1/4)
LOGIC UNIT (1/4)
CI-V
CI-V
1.5V
LOGIC-3
START
START
KEY
KEY
VDD3R3
VDD3R3
VDD3R3
SQLS
CP10S
CP602
THML
FORL R609 1K
FORL
REFL R610 1K
REFL
ALCL R611 1K
ALCL
IDL R612 1K
ID L
VDL R613 1K
VDL
THML R614 1K
SKYS
AVXL R615
AVXL
DX1
1K
SHSK0
SHSK1
DX1S
LOGIC-3
UNLKS
VDD3R3 THRI
JPG4
JPG5
JPG6
LTXD
LRXD
DSKY
JP53
PWRS
PWRS
CP10S
CP603 FZRX
I KEY
FZTX
ISTA
VDD3R3
JPG4
JP53
WDTOVF
JRESI
JPG5 C628
JPG6
RES# IC609
1
2
3
RES#
4
FZRS 5
6
7
TC74HC08AF
VDD3R3
VDD3R3
C626 0. 1
IC607
1 5
H8_FZMD
2
3 4
H8_MD2
VDD3R3
SN74AHC1G08DCK3
VDD3R3
C627 0. 1
LOGIC-2
I C608
1 5
H8_FZRD
2
3 4 FZRX
SN74AHC1G08DCK3 FZT X
FZTX
VDD3R3
VDD3R3
R725
D727
KDS4148U 10K
R726 VDD3R3
Q725
18K 2SA1586
62.8ns C721
(15.974MHz) R727
Q727 0. 1
IC721
KTC4075
12K 1
2
3
4
Q731
3.0Vp-p VDD3R3 VDD5
KRC402
TC7WH04FU
R732
1K
R731
KDS122
KDS122
1K
D731 D732
VDD3R3
R607
180
VDD3R3
X601
CR-755
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126 IC604
127
128 HD64F2370VFQ34V
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
VDD3R3
0. 1 VDD3R3 VDD3R3 VDD3R3
VDD3R3
C629
14
0. 1
13
12
IC610
11 1 8
A0 VCC
10 2 7
A1 WP
9 3 6 ECK
A2 SCL
8 4 5
VSS SDA
R1EX24064ATA00A
USCK_
VDD3R3
D715
MA2S7280G
R712
VBUS_
47K
10 - 1
VDD3R3
8
7 CRXD/CBSY
6 CTXD
5
VDD3R3
TCON
ESTA
EKEY
72
71 H8_D7 VDD3R3
70
69 H8_D6
68 H8_D5
67
H8_D4
66 H8_D3
65 H8_D2
64 H8_D1
63 H8_D0
62
61 SCK
60 SPS0
59
SST1
CP604
58 CP10S
57 DSPR
56 DSPCK
55 CRXD/CBSY
54 CTXD SH_RD# 1
53 TCON 2
52 3
MDAT H8_CS6#
51 4
MCK SH_CS1#
50 5
49 EKEY SH_CS0# 6
48 ESTA 7
47 PST SH_CS2# 8
46 METV SH_A0 9
45 PSL 10
44 11
CON2
43 12 IC605
PDAT/CON1 SH_D2
0
42 PCK/CON0 SH_IRL3# 13
41 FR_ST S 14 XC9572XL
40 FR_CS0# 15
39 W DTOVF FR_CS1# 16
38 SH_A24 17
VDD3R3
37 SH_RDY# 18
19
SH_RD/WR# 20
21
SH_CK 22
SH_WE0# 23
24
SH_WE1# 25
H8_CS7#
H8_CS6#
H8_A1 2
H8_A12
H8_A1 1 H8_A11
H8_A1 0
H8_A10
H8_A9
H8_A9
H8_A8
H8_A8
H8_A7
H8_A7
H8_A6
H8_A6
H8_A5
H8_A5
H8_A4
H8_A4
H8_A3 H8_A3
H8_A2
H8_A2
H8_A1
H8_A1
UPWS
USDA
H8_D15
H8_D15
H8_D14
USCK H8_D14 LOGIC-4
H8_D13 H8_D13
H8_D12
H8_D12
H8_D11
H8_D11
H8_D10
H8_D10
H8_D9
H8_D9
H8_D8
VBUS H8_D8
H8_D7
H8_D7
H8_D6
H8_D6
H8_D5 H8_D5
H8_D4
H8_D4
H8_D3
H8_D3
H8_D2
H8_D2
H8_D1
H8_D1
H8_D0
H8_D0
METV
MCK
MDAT
DRESH
DRESL
DRES D
FRWT
DFR
DFX
DSPCK
DSPR
DX1
MHSK0
MHSK1
+3R3V
TXS
RXS
+3R3V
UPWS
USDA
USCK
VBUS
DULS
75 SKYS
74 H8_RD# SENI
73
RTKI
72
CP701 CP10S TRVI
71 H8_CS7# NSQ
70 RTD RTD
69 TND
68 H8_D8 CTFL
67 H8_D9 TRAS
66 H8_D10 EXRL1
65
H8_D11 EXRL2
64
H8_A0 SQS
63 H8_A 1 SQLS
62 USQLS
61 ASTB
60 H8_D12 M STB
59 H8_D13 DSKY
58 H8_D14
57
56 H8_D15
55 H8_WAIT#
54 H8_LWR#
53 CP702 CP10S
52 CP703 CP10S
51
UNLKA
UNLK B
PCK/CON0
PDAT/CON1
CON2
PSL
PST
RSTB
+3R3V
IKEY
TCK ISTA
THRI
FSTB
DX1S
SHSK0
SHSK1
UNLKS
SCK
SDAT
SST1
DPR_UB# SPS0
DPR_UB#
DPR_LB# SST2
DPR_LB#
DPR_CE# SSYNCIO
DPR_CE#
DPR_OE# DFRS
DPR_OE#
DPR_RD/WR# DFXS
DPR_RD/WR#
DPR_BUSY#
DPR_BUSY#
LOGIC-4
DPL_UB#
FR_STS
DPL_UB#
DPL_LB#
SH_IRL3#
DPL_LB#
DPL_CE#
DPL_CE#
DPL_OE # FR_CS0#
DPL_OE#
DPL_RD/WR# FR_CS1#
DPL_RD/WR#
SH_RD#
DPL_BUSY#
DPL_BUSY# SH_CS1#
SH_CS0#
SH_CS2#
SH_A0
SH_A1
SH_A2
SH_D2
SH_A24
SH_RDY#
SH_RD/WR#
SH_CK
SH_WE0#
SH_WE1#
SH_BS#
PLD_RES LOGIC-4
+3R3V
LOGIC-3
+3R3V
R698
MOUT
10K
MCK
MDAT
DRESH
DRESL
DRESD
FRWT
DFR
DFX
DSPCK
DSPR
DX1
MHSK0
MHSK1
TXS
RXS
LOGIC-3
UPWS
USDA
U SCK
VBUS
DULS
SKYS
SENI
RTKI
TRVI
NSQ
RTD
TN D
CTFL
TRAS
EXRL1
EXRL2
SQS
SQLS
USQLS
ASTB
M STB
DSKY
+3R3V
UNLKA
UNLKB
PCK/CON0
PDAT/CON1
CON2
PSL
PST
RSTB
VDD3R3 +3R3V
IC661
5 1
2
4 3
IKEY#
SN74AHC1G04DCK
ISTA
THRI
LOGIC-3
FSTB
+3R3V
DX1S
SHSK0
SHSK1
UNLKS
SCK
SDAT
SST1
SPS0
SST2
SSYNCIO
DFRS
DFXS
FR_STS
SH_IRL3#
FR_CS0#
FR_CS1#
SH_RD#
SH_CS1#
SH_CS0#
SH_CS2#
LOGIC-1
SH_A0
SH_A1
SH_A2
SH_D2
SH_A24
SH_RDY#
SH_RD/WR#
SH_C K
SH_WE0#
SH_WE1#
SH_BS#
SYS_RES#
H 8_RESET# LOGIC-2
*; Refer to "PARTS LIST."