16
Pin No. Pin Name I/O Description
50 FGG O
Focusing gain automatic alignment signal output to the focus coil driver (IC402)
51 — —
Not used (open)
52 XRST O
Reset signal output to the SM5852CS (IC302), CXA1782BR (IC501) and CXD2507AQ (IC502)
“L”: reset
53 DCLK O
Serial data transfer clock signal output to the CXD2507AQ (IC502)
54 DDATA O
Serial data output to the CXD2507AQ (IC502)
55 DLAT O
Serial data latch pulse signal output to the CXD2507AQ (IC502)
56 LMOT1 O
Loading motor (M903) drive signal output terminal *1
57 LMOT2 O
Loading motor (M903) drive signal output terminal *1
58 — —
Not used (open)
59 IGN I
Ignition input terminal (connected to power supply in this set)
60 RESET I
System reset signal input from the reset signal generator (IC602) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
61 SENS I
Internal status input from the CXD2507AQ (IC502)
62 RADIOON I
Radio on/off control signal input from the power connector (CN201)
63 BATTCHK I
Backup power detection signal input terminal (used also to reset standby)
64 SCOR I
Subcode sync (S0+S1) detection signal input from the CXD2507AQ (IC502)
65 C.OUT I
Track number count signal input from the CXA1782BR (IC501)
66 EJKEY I
Inputs the disc eject switch (S501) detection signal
“L” is input while the switch is pressed (used also to reset standby)
67
BATTDET
(INSW)
—
Not used (open)
68 VDD
— Power supply terminal (+5V) (for digital system)
69 X2 O
Main system clock output terminal (4.19 MHz)
70 X1 I
Main system clock input terminal (4.19 MHz)
71 IC —
Internal connection terminal (normally connected to ground)
72 — O
Not used (open)
73 — I
Not used (fixed at “L”)
74 AVDD
— Power supply terminal (+5V) (for analog system)
75 AVREF0 I
Reference voltage input terminal (+5V) (for A/D converter)
76 LAMPIN I
Lamp drive voltage input from the power connector (CN201)
77 SH/LO O
Shift/load control signal output to the key control (IC502)
78 QH I
Key data input from the key control (IC502)
79 LSW I
Inputs the sled limit in detect switch (S301) detection signal
“H”: When the optical pick-up is inner position
80 DSW I
Inputs the disc set detect switch (S601) detection signal
“L”: When completion of the disc chucking operation
*1 Loading motor (M903) control
LMOT1 (pin %§)
“H” “L” “H” “L”
LMOT2 (pin %¶)
“H” “H” “L” “L”
Terminal
Operatio
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