Clarion PU-1680A - Page 8

M@ EXPLANATION OF IC
M uPD784215
Radio, Tape Controller
Outward Form
100 pins, plastic QFP
Terminal Description
052-3917-00
Function
Pin No | Symbol
Function
Symbol
Ground
Not in use
{
Not in use
Reset signal input. “L”=Reset
Not in use
=
17 N.C
19 | Ki-0
20 | B/U-DET
18 RDS-CLK RDS clock pulse input
Not in use
Key scan signal input. Ref. Table 1
Backup intterrupt signa! input.
“H’=Backup ON
ACC power supply ON signal
input. “L°=ACC ON
PACK-IN | | Cassette pack insertion detection
terminal. “L”=Tape in
23
{AVDD
—
|
Positive
supply
voltage
24
y
AVREFO
—
|
Reference
vottage
input
for
AD
converter
25 NOISE-IN1
Input terminal of A/D converter to
detect the noise of FM
26 | NOISE-IN2
Not in use
27
=|
S-M
1
|
Input
terminal
of
internal
A/D
converter
to
detect
the
voltage
of
|
FM
S
meter
28
N.C
|
!
|
Not
in
use
29
PLL-DI
|_|
PLL
serial
data
input
30 REMCON-1
Input terminal of internal A/D
converter to detect the remote
control switch
t
31 REMCON-2
Input terminal of internal A/D
converter to detect the remote
[control switch
Input terminal of A/D converter to
detect the voltage of Backup line
=i Ground
Input terminal for Intercom
interruption. “H’=Interrupt ON
PUT68G
PU1681/EU 4454
Not in use
1
LCD-DO
O
|
Serial
data
output
Display
IC
AVREF
—
|
Connect
to
VDD
2
LCD-CLK
O
|
Clock
pulse
output
to
Display
IC
PLL-DO
c@)
|
Serial
data
output
to
PLL
IC
3
LCD-CE
ie)
Chip
enable
signal
output
to
PLL-CLK
|
O
|
Clock
pulse
output
to
PLL
IC
|
|
Display
IC
N.C
©
[Not
in
use
4
RDS
DATA
|_|
RDS
serial
data
input
PLL-CE
lo
Chip
enable
signal
output
to
PLL
IC
5
NOISECLEAR
|
O
il
Noise
clear
signal
output
SOFT-MUTE
O
|
Output
terminal
for
swithing
FM
6
RDS
MUTE
O
|
“H”
RDS
mute
ON
SOFT
MUTE
constant
7
|
FM-SD
[1
[“H°=FM
station
detected
A-MUTE
oO
|
Mute
signal
output
to
Audio
8
AM-SD
|
|
“H"=AM
staion
detected
power
amplifier
IC.
“L”=Mute
ON
9
VDD
|
—
|
Positive
supply
voltage
L-MUTE
O
{Mute
signal
output
to
line-out.
10
X2
—
|
Crystal
connection
(12MHz)
“L"=mute
ON
11
x1
|
“T
Crystal
connection
(12MHz)
NC
1
|
1
Not
in
use
Clock pulse output to electrical volume 1C
4
Sera! data output to electrical volumelC
Chip enable output to electrical volumelC
Mute signal output to electrical volumelC
5V power supply circuit conrol
signal output. “L"=ON
14V power supply control signal
Output. “H"=ON
“H"=Reverse. “L”=Forward
Not in use
“H"=Main motor ON
Not in use
Not in use
+
Not in use
INot in use
Not in use
Not in use
Not in use
Not in use
T .
Not in use
Not in use
Area setting input. Ref . Table 2
Area setting input. Ref . Table 2
Not in use
Not in use
Not in use
Not in use
{Not in use
|
Not in use
4
[Ground
Not in use
Not in use
Not in use
Not in use
Not in use
Not in use