Sony HCD-PX5 Service Manual page 92

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• MAIN BOARD IC506 µPDSS3033AYGF-M11-3BA (SYSTEM CONTROLLER)
Pin No. Pin Name
1
GEQ DATA
2
GEQ CLK
3 IIC DAT
4
CANT USE
5
IIC CLK
6
CANT USE
7 LCD DATA
8
LCD CLK
9 EVDD
10 EVSS
MOTOR1,
11, 12
MOTOR2
13 LCD RS
14 LCD CE
15 KB DATA
16 KB CLK OUT
17 KB CLK
18 IIC HELP
MODEL2,
19, 20
MODEL1
TE
L 13942296513
21 VPP
22 ST MUTE
23
ST STEREO
24 ST TUNED
25 ST CE
26 TA->ST DATA
27 ST->TA DATA
28 ST CLK
29 HP MUTE
30 SOFT CHK
31 LCD ON/OFF
32 PROTECT
33 DEVICE1
34 RESET
35 XTIN
36 XTOUT
37 REGC
38 XOUT
39 XIN
40 VSS
www
41 VDD
42 CLK OUT
43 LINE MUTE
.
44 STK MUTE
92
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I/O
O Serial data output to the M62428AFP (IC505)
O Serial data transfer clock signal output to the M62428AFP (IC505)
I/O Data input/output terminal for the IIC bus
O Not used (fixed at "L")
I/O Shift clock signal input/output terminal for the IIC bus
I Not used (fixed at "L")
O Display serial data output to the liquid crystal display (LCD600)
O Display serial data transfer clock signal output to the liquid crystal display (LCD600)
— Power supply terminal (+5V)
— Ground terminal
O Motor drive signal output terminal Not used (open)
O Reset signal output to the liquid crystal display "L": reset Not used (open)
Serial data latch pulse signal output to the liquid crystal display "L": data output
O
Not used (open)
I Key board data input terminal Not used (fixed at "L")
O Key board data transfer clock signal output terminal Not used (open)
I Key board data reading clock signal input terminal Not used (fixed at "L")
I/O
Busy signal input/output for the IIC bus
I Model Destination setting terminal
O Not used
O Tuner muting on/off control signal output to the FM/AM tuner unit
I FM stereo detection signal input from the FM/AM tuner unit "L": FM stereo
I
Tuning detection signal input from the FM/AM tuner unit "L": tuned, "H": detuned
O PLL serial chip enable signal output to the FM/AM tuner unit
O PLL serial data output to the FM/AM tuner unit
I PLL serial data input from the FM/AM tuner unit
O PLL serial data transfer clock signal output to the FM/AM tuner unit
O Headphone muting control signal output terminal "H": detuned
O For soft check terminal Normally open
O Power supply for liquid crystal display (LCD600) on/off control terminal
O Speaker output over load detection signal input "L": over load
I Not used (fixed at "L")
System reset signal input from the reset signal generator (IC508) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I Sub system clock input terminal (32.768 kHz)
O Sub system clock output terminal (32.768 kHz)
I Connected to the external capacitor
O Main system clock output terminal (16 MHz)
I Main system clock input terminal (16 MHz)
—
Ground terminal
— Power supply terminal (+5V)
x ao
O Not used (open) y
O Line muting on/off control signal output terminal "L": muting on
i
O Audio muting on/off control signal output to the power amplifier (IC801) "L": muting on
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