5
KDC-V7521/Y
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Description
Processing Operation
1
AM+B
O
AM+B control
Hi : During AM reception
2
FM+B
O
FM+B control
Hi : During FM reception, Hi : During FM reception
if with RDS, RDBS
3
AFS
O
Noise detection time constant switching terminal
Hi : During FM reception, Lo : During FM seek or
AF search
4
PLL-DATA
I/O
Data input/output with F/E
5
PLL-CLK
I/O
Clock output to F/E
6
EVDD
-
Positive power supply connection terminal
Connected to BU 5V lines.
7
EVSS
-
Ground connection terminal
Connected to GND lines.
8
N.C.
O
Not used (N.C.)
9
BEEP
O
BEEP sound output
10
REMO
I
Data input from the remote control light sensor
11
PRE-MUTE L
O
Pre-out mute control (L)
When M MUTE L input is Lo during CD source
selected, PRE MUTE L outputs Lo.
12
PRE-MUTE R
O
Pre-out mute control (R)
When M MUTE R input is Lo during CD source
selected, PRE MUTE R outputs Lo.
13
IC2-SDA
I/O
Data line with IC2,CD mechanism MI-COM.
14
IC2-CLK
O
Clock line with IC2,CD mechanism MI-COM.
15,16
N.C.
O
Not used (N.C.)
17
DA-SDA / DIM-CON
O
Data output to D/A converter (V-LED model)
Data line with D/A converter
/ Dimmer control output
/ Hi : Dimmer OFF, Pulse wave shape : Dimmer ON
18
TEST
-
Test terminal
Not used (Connected to GND lines)
19
P-MUTE
O
Power IC mute control output
Lo : Mute (during POWER OFF, ALL OFF, TEL
MUTE)
20
P-STBY
O
Power IC standby control output
Lo : Power IC OFF, Hi : Power IC ON, ALL OFF
mode
21
MUTE
O
IC2 mute control output
OPEN (Hi) : Mute ON, Lo : Mute OFF
22,23
N.C.
O
Not used (N.C.)
24
ACC-DET
I
ACC detection terminal
Lo : ACC ON, Hi : ACC OFF
25
DIMMER
I
Small lights detection input
Lo : During vehicle small lamps turn on.
26
SW5V
O
SW 5V control output
Lo : POWER ON mode
Bass boost OFF__Hi : 160msec, Lo : 40msec
27
EXT-AMP-CONT
O
External amp. control output
Bass boost LOW__Hi : 130msec, Lo : 70msec
Bass boost HI__ Hi : 100msec, Lo : 100msec
28
P-CON
O
Power control output
Lo : POWER OFF mode, Hi : POWER ON mode
29
ANT-CON
O
Antenna control output
Hi : During TUNER mode or TI reception
30
P-ON
O
SW 14V control output
Hi : POWER ON mode
31
RESET
I
Reset input terminal
Lo : System reset
32
XT1
I
Sub clock resonator connection terminal
Clock count during POWER OFF mode
●
IC1 (ELECTRIC UNIT : X25-9392-7X, X25-8762-72)
Summary of Contents for KDC-V7521/Y
Page 22: ...KDC V7521 Y 27 ...
