KDC-M7024/MP822
5
Ref. No.
Application/Function
Operation/Condition/Compatibility
Q53
Noise buffer
Q54
E-vol mute SW
When a base gose Hi, mute SW is turned on.
Q55~60
Pre-out mute SW
When a base gose Hi, Pre-out is muted.
Q63
E2P 5V SW
When Q63'base gose Lo, E2P 5V is out.
Q102, 103
AM+B SW
When Q102'base gose Hi, AM+B is out.
Q104
Composite signal buffer for RDS
COMPONENTS DESCRIPTION
MICROCOMPUTER'S TERMINAL DESCRIPTION
q SYSTEM MICROCOMPUTER : UPD703030GC014 (X25-966 : IC1)
Pin No.
Pin Name
I/O
Module
Purpose / Description
Truth table
Processing Operation
1
PLL_DATA
I/O
Tuner
Data output/input with F/E.
2
AM+B
I/O
Power supply
AM+B.
AM operation : H
3
(FM+B)
O
Power supply
FM+B (S01 F/E only).
FM operation : H,
Last FM : H (With RDS, RBDS model)
4
V_ILL PAN_E2P DATA I/O
To panel
V-ILL D/A converter (V-ILL, LCD), E2PROM data.
5
V_ILL PAN_E2P CLK
I/O
To panel
V-ILL D/A converter (V-ILL, LCD), E2PROM clock.
6
EVDD
-
7
EVSS
-
8
AFS
O
Tuner
Noise detection time constant switching.
FM seek, AF search : L, Receiving : H, Auto 0 : L
9
BEEP
O
Audio
Beep output.
10
REMO
I
Extra
Remote control input (Panel, External display).
11
P_MUTE
O
Audio
Power IC MUTE output.
Power OFF : L, All OFF : L, TEL mute : L
12
(SVR)
O
Audio
Power IC SVR discharge circuit control.
Power OFF momentary power dropped
: H (5 second) and then L
CD
CD mechanism data line.
13
IC2_SDA
I/O
Audio
IC2 data line.
Extra
ROM correction data line.
CD
CD mechanism clock line.
14
IC2_CLK
I/O
Audio
IC2 clock line.
Extra
ROM correction clock line.
15
P_STBY
O
Audio
Power IC STBY output.
Power IC ON : H, Power IC OFF : L, All OFF : H
16
P_CON
I/O
Extra
Power control.
Power ON : H, Power OFF : Hi-Z, All OFF : Hi-Z
17
DIMMER_CONT
O
To panel
Dimmer control (W-LED only).
Dimmer : Pulse control,
Frequency : 1kHz, Normally : H
18
TEST
-
Connect to GND.
19
NC
O
Extra
NC (MP3 mechanism model).
w
Output : L
20
MUTE
O
Audio
Mute output.
ON : OPEN, OFF : L
21
PRE_MUTEL
O
Audio
PREOUT (L ch) mute.
M MUTE L is L : L (CD), Momentary power
dropped : L, 2 zone, NAVI interrupt : Fixed H
22
PRE_MUTER
O
Audio
PREOUT (R ch) mute.
M MUTE R is L : L (CD), Momentary power
dropped : L, 2 zone, NAVI interrupt : Fixed H
