Icom IC-R7100 Service Manual

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P ORT P ORT PIN
DESCRIPTION
N
UMBE R N AME N UM BER
PI S MO 62
Outputs a con trol signal ter the
[REC R EMOTE] jack. Th is port
be comes "H IGH " whe n the epu
dr ives a tape recorder 10 re cord
re ce fve audio.
P16
NB 63
Beoomes "HIGH" when the
[NB· AFC] switch is ON,
P17
AD
64
Becomes "HIGH" w hen Ihe [Am
switch Is ON.
P20
LBUSY 75
Inpuls " SUSY " stçnats 10r LCD
d:;ve rs ( 1C8 . IC9) on the LOGIC
UNIT,
P21 S
TO P 76
Wh en Ihe po rt becomes "l OW,"
the ep u Is changed to Ihe backup
mode.
P22
DCK
77 Input port Ier the ma in d ial c lock
pulses .
P23 DUP 79
Input port for tbe maln d ial UP
sl gnal.
P24 D DN
80
In put po rt lor the mam dia! DOWN
slgnal.
P24 SO LS 81
Detec ts a squejch signa !.
When Ihe s ignal is "LOW." t he
equeicb ope ns.
P25 VSC
82
D el ects a ves stqnat.
Thia port becornes "H IGH" when
the VSC ci rcui t de tects an aud io
s ig nal.
P27 ADI
83
Inputs serlat data hom Ihe AIO
converter.
P30 CI VRX 85
Inp ut port for CI·V data.
P 31 crvrx 86
Outputs CI-V data.
P32
CK B7
Ou tput s serlat crock signa Is .
P33 D
AT A BB
Outp uts serlal data.
P34 POC
89 Becomes "HIGH" when the tlmet
functlon t urns the rece iver ON.
P35 BEEP
90
Outputs 1 kHz or 500 Hz SQu a re
waves used Ie r beep tones.
P36 BKIF 91
Ou tpu ts a "HIGH" pul se 01
35 msec. width during scanning
when the [ LOCK] swi tch is ON.
P37
LCDCD 92
Outputs command/dala selector
s
ignals for the LCD dr iv ers (I CS ,
1C9 ) on the LOG IC UNI T,
P40- A DO- 49 -4 2
In put and ou tpu t ports for address
P47 AD7
bu s data.
P SO -
AB - 40- 36 Output porta fo r th e ad dr ess bus.
P 54
A12
P55 A13
34 Nol used .
P56, A1 4,
33, 32
Ou tputs se lecte r s ignals 10r th e
P57
AIS RAM IC (IC11)on Ihe L OG IC
UNIT,
P60
EXCS 30 Out p uts selecter sl gna ls f or Ihe
11 0 exp a nde r IC (1C4) on the
LOG IC UNIT.
P61
TMCS 29 Output s sel ec ter si gn als for the
rea l time clock IC (IC12) on the
LOGIC UNIT ,
PO RT
PO RT
PI N
DE SCRIPTI ON
N UMBER NAME NUMBER
P62 , A DCO,
28,27
Outp uts ch an nel select er s ign a ls
P63 ADCI
ter ttte N O con verter IC (IC15) on
the LOGIC UNIT,
P64
RD
26
Ou tput s as tr Obe signal ter
memo ry reading.
P65 WR 25
Ou tputs a str obe si gnal ter
memory writl ng .
P66 , LCS1, 24 ,23 Outcuts ch ip selecter sign a ls lor
P67
LCS2
ttte LCD dri vers (I CS , IC9) on tne
LOGIC UNIT.
P70 FIL W 67 Becomes "HIGH'· w hen FM or
AMW
mode is selected.
P 71 ADCS
6B
Output s chi p se rae ter signaIs tor
the Al O conve rter IC ( IC 15) on
'he L OG IC UNIT,
P72
SS B 69
Becomes ·'HIGH" when SSB mode
is selected.
P73 AM 71 Becomes "HIGH" when AMW or
AM mode is setected.
P74
FM 72
Becomes "HIGH" whe n FM or
FMN mod e is se lec ted.
P 7S
WFM 73 Becomes "HIGH" when WFM
mode is se lected.
P7 6 U IL 74
Becomes · ·LOW ·· whe n US8 mode
is selecteet
Th is port becomes
"HIGH" in o
ther modes.
PTO V BUSY 93
I nputs a "BUSY" sl gna l for an
optlo nal UT·36 VO IC E
SY NTH ESIZ ER UNIT.
Th is POrt te eomes "HIGH" wh ile
synthesizinq.
PT 1 --
-
94, Not us ed .
P TI
'-6
3 -13

Icom IC-R7100 Specifications

General

Brand	Icom
Model	IC-R7100
Category	Receiver
Language	English