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KRC-851D
14
CIRCUIT DESCRIPTION
Assignment
Function
31
| PTHo3
Reel pulse input
(takeup)
Reel pulse input (takeup reel side in FWD).
Reel pulse input
(supply)
Reel pulse input (supply reel side in FWD).
ACC IN
When "H" is input, ACC "existence" is judged.
MUSIC IN
When "H" is input, tape tune "existence" is judged.
METAL IN
When "H" is input, LCD's MTL display is lit.
STEREO IN
When "H" is input, LCD's ST display is lit.
INH OUT
"H" output when turning on LCD display or "L" output when turning off.
Division
output
For destination Japan, only during ALL OFF mode, a 1/4 or 1/8 division of
4.19 MHz is output.
BUZ
Buzzer sound output port.
For buzzer sound, description is made separately.
40
[ P20
CE DISP
LCD Dr control STB output port.
DATA IN
Input port of data from CD-CH.
DATA OUT
LCD driver CD-CH control data output port.
CLK
Clock pulse I/O port.
LCD driver/CD-CH communication data clock.
Clock input port for CD-CH to master reception.
Standby mode detect input (momentary voltage decrease detect input), Active "L".
After interrupt takes place, when the port is "L", the standby mode is engaged,
while when "H", the standby mode is canceled.
Key return signal input.
Active "L".
Key source signal output.
Active "L".
Connected to VDD.
F/R OUT
Tape equalizer amplifier FWD/REV select output.
"L": FWD, "H": REV.
EQ MUTE
Tape equalizer mute output.
When sound from tape should not be emitted ...
(during FF/REW, direction, loading, eject, etc.)
"H"" output during TAPE.
PACK IN
Tape pack-in signal input.
Active "H" (pack-in at "H").
62
4 P30
MODE IN
Pin to input mechanism mode, to which mode detect photointerruptor output is
connected.
SUB-MOTOR ®
"H" output for normal rotating of mechanism sub-motor ("H" during brake).
SUB-MOTOR ©
"H" output for reverse rotating of mechanism sub-motor ("H" during brake).
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