Kenwood KDC-8021 - Page 8

KDC-8021/M9021/X859
8
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin Name I/O Purpose Processing Operation
Processing During Processing During
Non-Operation STBY
26 SW5V I/O 5V power supply terminal. ON: L OFF: Hi-Z Hi-Z
"L ("Hi-Z" in 10 sec.
after Power OFF).
Momentary power down
B-U present: "L".
27 BU-DET I
detection terminal.
B-U absent (momentary
power down): "H".
28 ACC-DET I Acc detection terminal.
Acc present: "L".
Acc absent: "H".
29 N.C O Output Open. Not used. L
30 DIMMER I Small detection terminal. ON: L OFF: H
"L for 40 ms: Bass Boost
Off.
31
EXT-AMP-
O
External amp control "L" for 70 ms: Bass Boost
HH
CONT terminal (200 ms). Low.
"L" for 100 ms: Bass
Boost High.
POWER ON: H
32 P-CON I/O Power control terminal. POWER OFF: Hi-Z Hi-Z Hi-Z
ALL OFF: Hi-Z
TUNER, TI ON: H Other
sources in last FM with
33 ANT-CON O Antenna control terminal. RDS: "H". Other sources L L
in last FM with RBDS,
TI ON: "H".
34 RESET I Reset input terminal. Normal: "H". Reset: "L".
35 XT1 I
Sub-clock connection Clock count. Working
terminal. while power is OFF.
36 XT2 -
Sub-clock connection
terminal.
Output terminal for
37 REGC - capacitor of Reg.
in uCOM.
During power ON:
Oscillating. During power
38 X2 -
Main clock connection
OFF and momentary
terminal.
power down: Oscillation
stopped.
39 X1 I
Main clock connection
terminal.
40 Vss - GND terminal.
41 Vdd -
Positive power supply
terminal.
42 CLKOUT O
Internal system clock
terminal.
With CD source: "L".
Other sources than CD:
"Hi-Z". Models without
43 CD MECHA+B I/O CD 4.7 V output terminal. MP3 or WMA: Output "L". Hi-Z Hi-Z
ON: 50 ms faster than
M-STOP. OFF: 50 ms
slower.
44 P-ON I/O SW 14 V control terminal.
POWER ON: H "H ("Hi-Z" in 10 sec.
POWER OFF: Hi-Z
Hi-Z
after power OFF).
45 O-DATA I/O
External display DATA Models without external
terminal. display: Output "L".
LL
SYSTEM MICROCOMPUTER uPD703033AGF-***-3BA (X25)