Sony HCD-GTX66 Service Manual page 74

HCD-GTX66/GTX77
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IC900 MB90M407PF-G-151E1 (DISPLAY CONTROL, KEY CONTROL) (PANEL BOARD)
Pin No. Pin Name
1 to 8 G16 to G23
9, 10 P35, P36
11 VSS-IO
12 to 22 P34 to P24
23 VDD-FIP
24 to 41 P23 to P6
42 VSS-IO
43 to 47 P5 to P1
48 VKK
49 to 51 MD0 to MD2
52 LED-VIDEO, USB
53 LED-TAPE, AUDIO
54 LED-CD, TUNER
55 LED-VOL1, 2
56 LED-VOL3, 4
57 LED-VOL5, 6
58 LED-FF, FR
LED-REC/ERASE,
59
CD-USB SYNC/REC 1
60 12C-DATA
61 12C-CLOCK
TE
L 13942296513
62 AVCC
63 AVSS
64 to 66 KEY0 to KEY2
67 ALL-BAND
68 to 71 BPF4 to BPF1
72 ORERATION DIAL
73 VOLUME
74 NO USE
75 LED-STOP
LED-CD-TAPE SYNC,
76
TAPE REC PAUSE/START
77 RESET
78 LED-AMS +, AMS –
79 LED-PLAY
80 LED selector
81 VSS-CPU
82 XO
83 XI
84 VCC-CPU
85 NO USE
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86 to 100 G1 to 15
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I/O
O Grid drive signal output to the vacuum fluorescent display
O Segment drive signal output to the vacuum fluorescent display
— Ground pin (for I/O port)
O Segment drive signal output to the vacuum fluorescent display
— Power supply pin (+3.3 V) (for vacuum fluorescent display)
O Segment drive signal output to the vacuum fluorescent display
— Ground pin (for I/O port)
O Segment drive signal output to the vacuum fluorescent display
— Power supply pin (–33 V) (for vacuum fluorescent display)
I Setting pin for the CPU operational mode
O Dynamic LED drive signal output of the VIDEO and USB indicator ("H": LED on)
O Dynamic LED drive signal output of the TAPE and AUDIO indicator ("H": LED on)
O Dynamic LED drive signal output of the CD and TUNER indicator ("H": LED on)
O Dynamic LED drive signal output of the (VOL1) and (VOL2) indicator ("H": LED on)
O Dynamic LED drive signal output of the VOL3 1st and VOL4 indicator ("H": LED on)
O Dynamic LED drive signal output of the VOL5 3rd and VOL6 indicator ("H": LED on)
O Dynamic LED drive signal output of the FF and FR indicator ("H": LED on)
Dynamic LED drive signal output of the REC/ERASE and CD-USB SYNC/REC 1
O
("H": LED on)
Clock signal for IIC communication between Master Control controller and Display
I/O
Control controller
Data signal for IIC communication between Master Control controller and Display
I/O
Control controller
— Power supply pin (+3.3 V) (for A/D conversion)
— Ground pin (for A/D conversion)
I Key input (A/D input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter
I
(A/D input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter
I
(A/D input)
I Jog dial pulse input from ORERATION DIAL encoder
I Jog dial pulse input from the VOLUME encoder
— Not used. (GND)
O Dynamic LED drive signal output of the STOP indicator ("H": LED on)
Dynamic LED drive signal output of the CD-TAPE SYNC and TAPE REC PAUSE/
O
START indicator ("H": LED on)
I System reset signal input from the Master Control controller ("L": reset)
Dynamic LED drive signal output of AMS + and AMS – indicator ("H": LED on)
O
Not used in this set.
O Dynamic LED drive signal output of PLAY and PAUSE indicator ("H": LED on)
O Dynamic LED drive select signal output
— Ground pin (for CPU)
O System clock output (4 MHz)
I System clock input (4 MHz)
— Power supply pin (+3.3 V) (for CPU)
— Not used. (GND)
O Grid drive signal output to the vacuum fluorescent display
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Pin Description
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3 6 7 1 3 1 5
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9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
9 9