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6-1. PIN FUNCTION DESCRIPTION
• MAIN BOARD IC101 µPD78013GC-761-AB8 (TUNER CONTROLLER)
Pin No.
Pin Name
1
TUNON
2
FM ON
3 to 8
NCO
9
VSS
10 to 23
NCO
24
VSS
25 to 32
NCO
33
TUNMUT
34
RAMBU
35
RESET
36
NCO
37
BU IN
38
NCO
39
BUSON
40
VDD
41
OSCOUT
42
OSCIN
43
GND
44
XT OUT
45
XT IN
46
AVSS
47
VSM
48
DSTSEL1
49
DSTSEL0
50
SD IN
51
ST MONO
52 to 54
NIL
55
AVDD
56
AVREF
57
PLL SI
58
PLL SO
59
PLLCKO
60
PLLCE
61
LINKOFF
62
UNISI
63
UNISO
64
UNICKI
SECTION 6
DIAGRAMS
I/O
O
Tuner system power supply on/off control signal output to the BA3918 (IC601) "H": tuner on
O
FM system power supply on/off control signal output to the BA3918 (IC601) "H": FM on
O
Not used (open)
—
Ground terminal
O
Not used (open)
—
Ground terminal
O
Not used (open)
O
FM and AM signal muting on/off control output "H": muting on
Internal RAM reset detection signal input from the RN5VD23AA (IC552)
Input terminal to check that RAM data are not destroyed due to low voltage
I
This checking is made within 100 msec after reset
System reset signal input from the system controller (IC501), reset signal generator (IC551) and
I
reset switch (S551)
O
Not used (open)
Battery detect signal input from the SONY bus interface (IC571) and battery check circuit
I
"H": battery on
O
Not used (open)
Bus on/off control signal input from the system controller (IC501) (for SONY bus)
I
"L": bus on
—
Power supply terminal (+5V)
O
Main system clock output terminal (8 MHz)
I
Main system clock input terminal (8 MHz)
—
Ground terminal
O
Sub system clock output terminal Not used (pull down)
I
Sub system clock input terminal Not used (fixed at "L")
—
Ground terminal (for A/D converter)
I
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU11)
I
Destination setting terminal (fixed at "L")
I
Destination setting terminal (fixed at "H")
Station detector detect input from the FM/AM tuner unit (TU11)
I
Stop level for SEEK, BTM, etc. is determined SD is present at input of "H"
Input of FM stereo detection signal from FM/AM tuner unit (TU11), and output of forced
monaural control signal to FM/AM tuner unit (TU11) (Commonly used for stereo display input
I/O
and forced monaural output)
FM stereo detection at input of "L", forced monaural at output of "L"
I
Not used (fixed at "L")
—
Power supply terminal (+5V) (for A/D converter)
I
Reference voltage input terminal (+5V) (for A/D converter)
I
PLL serial data input from the FM/AM PLL (IC91)
O
PLL serial data output to the FM/AM PLL (IC91)
O
PLL serial data transfer clock signal output to the FM/AM PLL (IC91)
O
PLL serial chip enable output to the FM/AM PLL (IC91)
O
Unilink on/off control signal output (for SONY bus) "L": link off
I
Serial data input from the SONY bus interface (IC571)
O
Serial data output to the SONY bus interface (IC571)
I
Serial data reading clock signal input from the system controller (IC501) (for SONY bus)
Function
"L" is input for several 100 msec after power on, then it changes to "H"
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