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Pin No.
Pin Name
I/O
Function
6-1.
IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC701
µPD78058GC-464-3B9 (SYSTEM CONTROL)
SECTION 6
DIAGRAMS
1
DSEL1
I
Destination setting terminal (fixed at center voltage)
2
RCIN0
I
Rotary remote commander shift key A/D input terminal
3
SD_IN
I
Station detector detect input from the FM/AM tuner unit (TU1)
Stop level for SEEK, BTM, etc. is determined SD is present at input of “H”
4
AVSS
—
Ground terminal (for A/D converter)
5
ST
I/O
Input of FM stereo detection signal from FM/AM tuner unit (TU1), and output of forced monaural
control signal to FM/AM tuner unit (TU1) (Commonly used for stereo display input and forced
monaural output) FM stereo detection at input of “L”, forced monaural at output of “L”
6
PLL-CE
O
PLL serial chip enable output to the FM/AM PLL (IC31)
7
AVREF
I
Reference voltage (+5V) input terminal (for D/A converter)
8
PLLSI
I
PLL serial data input from the FM/AM PLL (IC31)
9
PLLSO
O
PLL serial data output to the FM/AM PLL (IC31)
10
PLLCKO
O
PLL serial data transfer clock signal output to the FM/AM PLL (IC31)
11
P-ST.IN
I
Polar stereo signal input from the polar multiplexer (IC401)
12
LCDSO
O
Serial data output to the liquid crystal display driver (IC901)
13
LCDCKO
O
Serial data transfer clock signal output to the liquid crystal display driver (IC901)
14
LCD-CE
O
Chip enable output to the liquid crystal display driver (IC901)
15
LCD-INH
O
Blank indicate control signal output to the liquid crystal display driver (IC901) “L”: no display
16
UNI-SI
I
Serial data input from the bus interface (IC571) (for SONY bus)
17
UNI-SO
O
Serial data output to the bus interface (IC571) (for SONY bus)
18
UNI-CKI
I
Serial data reading clock signal input terminal
19
UNI-CKO
O
Serial data transfer clock signal output to the bus interface (IC571) (for SONY bus)
20
BUS-ON
O
Bus on/off control signal output to the bus interface (IC571) (for SONY bus) “L”: bus on
21
SYS-RST
O
Reset signal output to the bus interface (IC571) (for SONY bus) “L”: reset
22
AMPON
O
Standby control signal output to the power amplifier (IC471)
23
AMP-MUTE
O
Muting control signal output to the power amplifier (IC471)
24
TUN-ON
O
Tuner system power supply on/off control signal output to the BA3918 (IC601) “H”: tuner on
25
FM-ON
O
FM system power supply on/off control signal output to the BA3918 (IC601) “H”: FM on
26
PW-ON
O
Main system power supply on/off control signal output to the BA3918 (IC601) “H”: power on
27
COLOR
I
Input terminal to set whether the illumination color change function is present or not
“L”: illumination color change function is present (fixed at “L”)
28
AMS_ON
O
Tape auto music sensor control signal output to the CXA2510Q (IC101)
“L” is output to lower the gain for audio level at FF/REW
29
REL
I
Reel table rotation detect signal input from the take-up and supply reel sensor
30
MTLIN
I
Input terminal to set whether the auto metal function is present or not
“L”: auto metal function is present
31
POS3
I
Tape position detect input from the tape operation switch (S901)
32
POS2
I
33
GND
—
Ground terminal
34
POS0
I
Tape position detect input from the tape operation switch (S901)
35
POS1
I
