Pioneer DEH-P47DHUC, Service Manual

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DEH-P77DH,P47DH
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Pin Functions (PD6279A)
Pin No. Pin Name I/O Function and Operation
1–42 SEG41–0 O LCD segment output
43–46 COM3–0 O LCD common output
47–49 V1–V3 LCD bias power supply
50 VCC Power supply terminal
51 LED O LED control output
52 SO O System micro computer UART communication data output
53 SI I System micro computer UART communication data input
54,55 MOD0,1 GND
56 RST I Reset signal input terminal
57 X0 Crystal oscillator connection pin
58 X1 Crystal oscillator connection pin
59 VSS GND
60 REMIN I Remote control reception input
61 DIM O Dimmer select output
62 GRN/
amb
O Illumination color select output
63–66 KDT4–1 I Key data input
67–72 KST6–1 O Key strobe output
73–100 SEG69-42 O LCD segment output
*PD6279A
30
31
50
51 80
81
100
1
TSOP1840SB1
OUT GND VCC
REGULATOR
BPF
GAIN
CONT.
BPF DET.
REGISTER
PD
NOISE AGC
1
2
3