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HCD-EP50
Ver 1.1
Pin No.
Pin Name
STROBE
44
45
INPINENA
46
DOLBYENA
47
CE
48
PLLENA
49
MUTE
50
POWER
51 to 54 COM0 to COM3
55
BIAS
56 to 58
VLC0 to VLC2
59
VSS
60 to 89
SEG0 to SEG29
90
SEG30 (SEL6)
91
SEG31 (SEL7)
92
SEG32
93
SEG33
94
SEL10
95
SEG35
96
SEL12
97
SEG37
98
SEL14
99
SEL15
100
GENERALDIN
32
I/O
O
Strobe signal output to the 94HC4094 (U15) "H" active
O
Mega bass on/off selection signal output "H": mega bass on
Dolby NR on/off selection signal output terminal "L": dolby off, "H": dolby on
O
Not used (open)
O
Chip enable signal output to the LC75392 (U6) "H" active
O
PLL chip enable signal output to the FM/AM PLL (U2) "H" active
O
Audio line muting on/off control signal output "H": muting on
O
System power on/off control signal output "H": power on
O
Common drive signal output to the liquid crystal display (CN301)
O
Bias output for the liquid crystal display drive
Input terminal for doubler circuit capacitor connection to develop liquid crystal display drive
I
voltage
—
Ground terminal
O
Segment drive signal output to the liquid crystal display (CN301)
Segment drive signal output to the liquid crystal display (CN301)
I/O
AM frequency select switch (SW1) input terminal
(AM frequency select switch: used for the except AEP, UK, Chinese models)
Segment drive signal output to the liquid crystal display (CN301)
I/O
AM frequency select switch (SW1) input terminal
(AM frequency select switch: used for the except AEP, UK, Chinese models)
O
Segment drive signal output to the liquid crystal display (CN301)
O
Segment drive signal output to the liquid crystal display Not used (open)
I
Head position detect switch input terminal "L": reverse direction, "H": forward direction
O
Segment drive signal output to the liquid crystal display Not used (open)
I
Cassette tape detect switch input terminal "L": no cassette, "H": cassette in
O
Segment drive signal output to the liquid crystal display Not used
Rec-proof claw (forward direction) detection signal input from the protect detect switch
I
"L": recording possible, "H": protect
Rec-proof claw (reverse direction) detection signal input from the protect detect switch
I
"L": recording possible, "H": protect
I
Serial data input from the FM/AM PLL (U2)
Description
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