Sony HCD-PX5 Service Manual page 87

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• MD DIGITAL BOARD IC1001 M30805MG-205GP (MD MECHANISM CONTROLLER)
Pin No. Pin Name
1, 2
—
3 LVL1
4 LVL0
5 to 7
—
8 MUTE
9 DARST
10 SLICERSEL
11 LD-LOW
12 LDIN
13 LDOUT
14 MOD
15 BYTE
16 CNVSS
TE
L 13942296513
17 X-CIN
18 X-COUT
19 RESET
20 XOUT
21 VSS0
22 XIN
23 VCC0
24 NMI
25 DQSY
26 P.DOWN
27 SQSY
28 NC
29 LDON
30 LIMIT-IN
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*1 Loading motor (M103) control
Terminal
.
LDIN (pin qs)
LDOUT (pin qd)
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I/O
O Not used (open)
O L-ch level output terminal Not used (open)
O R-ch level output terminal Not used (open)
O Not used (open)
O
Muting control signal output to the D/A converter (IC1006) "L": muting
O
Reset signal output to the D/A converter (IC1006) "H": reset
O IEC958 input selection signal output to the D/A converter (IC1006) "L": MD, "H": CD
Loading motor drive voltage control signal output for the loading motor driver (IC1004)
O
"H" active
O
Motor control signal output to the loading motor driver (IC1004) "L" active *1
O Motor control signal output to the loading motor driver (IC1004) "L" active *1
Laser modulation select signal output to the HF module switch circuit
Stop: "L", Playback power: "H",
Recording power:
O
I External data bus line byte selection signal input "L": 16 bit, "H": 8 bit (fixed at "L")
I Mode setting terminal "H": processor mode (fixed at "H")
I Sub system clock input terminal Not used (open)
O Sub system clock output terminal Not used (open)
System reset signal input from the reset signal generator (IC931) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O Main system clock output terminal (10 MHz)
— Ground terminal
I Main system clock input terminal (10 MHz)
— Power supply terminal (+3.3V)
I Non-maskable interrupt input terminal "L" active (fixed at "H" in this set)
Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2662R (IC151)
I
"L" is input every 13.3 msec Almost all, "H" is input
Power down detection signal input from the system controller (IC501)
I
"L": power down, normally: "H"
Subcode Q sync (SCOR) input from the CXD2662R (IC151)
I
"L" is input every 13.3 msec Almost all, "H" is input
O Not used (open)
O
Laser diode on/off control signal output to the automatic power control circuit "H": laser on
Detection input from the sled limit-in detect switch (S101)
I
The optical pick-up is inner position when "L"
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Mode y
LOADING
i
"L"
"H"
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2 9
8
Description
0.5 sec
2 sec
Q Q
3 6 7 1 3 1 5
co
EJECT BRAKE
.
"H" "L"
"L" "L"
9 4 2 8
0 5 8 2 9 9 4 2 8
m
RUN IDLE
"H"
"H"
9 9
9 9
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