MICROCOMPUTER'S TERMINAL DESCRIPTION
SYSTEM MICROCOMPUTER uPD703033AGF-***-3BA (X25)
Pin
Name
I/O
1
MC-DATA
I/O
2
MC-CLK
O
3
PLL-DATA
I/O DATA I/O to/from F/E.
4
PLL-CLK
I/O CLK I/O to/from F/E.
5
AM+B
I/O
6
FM+B
I/O FM power supply terminal. With RDS and RBDS
7
CH-CON
O
8
CH-RST
O
9
Evdd
-
10
Evss
-
11
AFS
O
12
BEEP
O
13
REMO
I
14
N.C
O
15
N.C
O
16
IC2-SDA
I/O
17
IC2-SCL
I/O
18
PRE-MUTE R
O
19
PRE-MUTE L
O
20
N.C
O
21
TEST
-
22
N.C(SVR)
O
23
P-MUTE
O
24
P-STBY
O
25
MUTE
O
Purpose
DATA line to Panel
uCOM.
CLK line to Panel uCOM.
AM power supply
During AM operation: "H".
terminal.
During FM operation: "H".
only, last FM: "H".
CH control output.
ON:H OFF: L
Normally "H". In recovery
after system RST,
CH reset output.
remains H for 400 ms
then goes L"
Positive power supply
terminal.
GND terminal.
During FM seek and
Time constant switching
AM search: L.
upon noise detection.
During reception; H.
Beep output terminal.
Since there is no
Wired remote input
wired remote control,
terminal.
connected to GND.
Output Open. Not used.
Output Open. Not used.
IC2, IC5 and CD
mechanism DATA line.
IC2, IC5 and CD
mechanism CLOCK line.
"L" when M MUTE R is
L (during CD playback).
PREOUT(Rch)MUTE
"L" during momentary
power down. "H" only in
2-zone operation.
"L" when M MUTE R is
L (during CD playback).
PREOUT(Lch)MUTE
"L" during momentary
power down. "H" only in
2-zone operation.
Output Open. Not used.
L
Test pin.
Normal: "L". During
power OFF: "H" in 5 sec.
Power OFF: H
Power OFF: L All OFF:
Power IC MUTE terminal.
"L". Tel muting: "L"
POWER IC ON: H
Power IC STBY terminal.
POWER IC OFF : L
ALL OFF: H
ON: Open. OFF: "L".
Muting terminal.
Time constant: 0.48 ms
(with both ON/OFF)
KDC-8021/M9021/X859
Processing During Processing During
Processing Operation
Hi-Z
Panel attached: "H".
Detached: "Hi-Z".
Hi-Z
Hi-Z
Hi-Z
Hi-Z
L
L
Last FM with RDS
and RBDS: "H".
Without RDS and
RBDS: "L".
L
Hi-Z
Hi-Z
"H" (other sources
than CD)
H (other sources
than CD)
H
L
L
Non-Operation
STBY
Hi-Z
H
Hi-Z
Hi-Z
Hi-Z
Hi-Z
L
L
L
L
L
L
Hi-Z
Hi-Z
H
H
"H" ("L" in 5 sec.
after Power OFF).
"L ("H" in 5 sec.
after P-ON OFF).
L
Open ("H" in 5 sec.
after P-ON OFF).
7