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• MAIN BOARD IC701 MSM65354-412GS-BK4 (SYSTEM CONTROLLER, LCD DRIVER, KEY CONTROL)
Pin No. Pin Name I/O Function
1 to 4 COM1 to COM4 O
Common drive signal output to the liquid crystal display (LCD401)
5 to 11 SEG0 to SEG6 O
Segment drive signal output to the liquid crystal display (LCD401)
12 NC O
Not used (open)
13 to 18 SEG7 to SEG12 O
Segment drive signal output to the liquid crystal display (LCD401)
19 to 36 NC O
Not used (open)
37 AGND —
Ground terminal (analog system)
38 DC CHK I
DC in voltage detection input terminal (A/D input) Also used for DC IN detection
39 DOOR OPEN I
CD lid open/close detection switch (S401) input terminal
The stop status is reset with the falling edge of input signal
“H”: CD lid open, “L”: CD lid close
40 KEY IN1 I
Key input terminal (A/D input)
RETURN, MENU –, PREV =, ^, NEXT +, MENU + keys input (S441 to S446)
41 KEY IN2 I
Key input terminal (A/D input) p POWER OFF, SELECT keys input (S421 and S422)
42 BATT CHK I
Battery voltage detection input terminal
43 NTSC/PAL I
Video system select switch (S703) input terminal “L”: NTSC, “H”: AUTO
44 DCINJACK I
DC IN 6V jack (J801) detection input terminal “L”: plug in
45 MODE I
Fixed at “L” in this set
46 VRH I
Reference voltage input terminal (+3.3V) (for A/D converter)
47 AVDD —
Power supply terminal (+3.3V) (analog system)
48 DBB CTL1 O
MEGA BASS on/off control signal output terminal
“L”: MEGA BASS on (level-1 and level-2) Not used (open)
49 AU-MUTE O
Analog line mute control signal output terminal “H”: mute on
50 XAU-RESET O
Reset signal output to the CXD2545Q (IC601) and headphone amplifier (IC360) “L”: reset
51 XV-RESET O
Reset signal output to the MPEG audio/video decoder (IC901) and video encoder (IC920)
“L”: reset
52 HOLD I
HOLD switch (S701) input terminal “L”: hold off, “H”: hold on
53 RESUME I
RESUME switch (S702) input terminal “L”: resume off, “H”: resume on
54 XDSPLT O
Serial data latch pulse signal output to the CXD2545Q (IC601)
55 XDACLT O
Serial data latch pulse signal output to the D/A converter (IC320)
56 V-POWER O
Video CD system power supply on/off control signal output terminal “L”: power on
57 AU-POWER O
Audio CD system power supply on/off control signal output terminal “L”: power on
58 ESP-POWER O
Control signal output to the ESP (Electronic Shock Protection) circuit
59 TRVCTL O
Tracking gain control signal output terminal
60 to 63 TRV3 to TRV0 O
Tracking balance control signal output terminal
64 XSOE O
Serial data output enable signal output terminal Not used (open)
65 DSP-SUBQ I
Sub-code Q data signal input from the CXD2545Q (IC601)
66 DSP-SBQCLK O
Sub-code Q data reading clock signal output to the CXD2545Q (IC601)
67 REMOTE I
Sircs remote control signal input from the remote control receiver (IC401)
68 DSP-DATA O
Serial data output to the CXD2545Q (IC601) and D/A converter (IC320)
69 DSP-SENS I
Internal status (SENSE) signal input from the CXD2545Q (IC601)
70 DSP-CLK O
Serial data transfer clock signal output to the CXD2545Q (IC601) and D/A converter (IC320)
71 DSP-SNSCLK O
Sense serial data reading clock signal output to the CXD2545Q (IC601)
72 VDD —
Power supply terminal (+3.3V) (digital system)
73 BEEP O
Beep sound drive signal output terminal
74 C2PO O
C2PO signal control output terminal “L”: stop mode, “H”: searching Not used
75 ESP-CLK O
Serial data transfer clock signal output terminal Not used (open)
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