Microprocessor Periphery Block Diagram - Kenwood KA-7090R Service Manual

6.
Microprocessor periphery block diagram
(K's
KAF-7002,5002)
(KA-7090R)
SERIAL
x2
DATA,
BUSY
MOTOR VOL
UP/DOWN
x3
KEY INPUT
sP
sw
|NPUT (ROTARY SW)
INPUT
INPUT (ROTARY SW)
SELECTORIC
x3
(K's)
DATA,
CLOCK,
BUSY
TC9162 (FUNCTTON SW)
TC9164 (REC OUT SW)
SELECTOR
lC
x5(KA-7090R)
.
DATA, CLOCK
.
BUSY (TC916X)
.
cLR,
STB(NJU3711)
TC9162
(FUNCTTON SW)
TC9164 (REC OUT SW)
NJU3711(tNPUT SEL SW)
CIRCUIT DESCRIPTION
DESTINATION
x2
AD
COMPO/K's
DISCRIMINATION
KAF.7OOA5OO2 DISCRI
M
I
NATION
(K's)
KA-7090R
LED
DISPLAY
x
13
SELECTOR
LED
/RELAY
CONTROL
xG
REC
OUT
LED
x
1
A.T.T.
LED
x
1
ON/STANDBY
LED
x
1
LOUDNESS LED
x
1
S.
DIRECT LED
x
1
SP RELAY x 2
LED
DISPLAY
x
14
SELECTOR
LED x
6
MD/MONITOR
LED
x
1
MUTE LED
x
1
ON/STANDBY LED
x
1
LOUDNESS LED
x
1
DIRECT LED
x2
SP
RELAY x 2
POWER ON
x
1
:
@
N
5
N
:
1>
!
6ö
@
@
gD
Tal
AUDIO
MUTE
x
1
HEAD
PHONE
x'l
(K's KAF-7002,5002)
DIRECT
ENCODER
x2
PROTECTION
x
1
RESET
x
1
CE
x1
DESTINATION
x 2
COMPO/K's DISCRIMI NATION
8/16
bir
CHANGE OVER(KA-7ogoR)