Ic Description - Aiwa XR-M78EZ Service Manual

IC DESCRIPTION

IC, LC876564
Pin No. Pin Name
_______________
1 I-STEREO/DRF
2 I-TUDO/I-SQOUT
3 I-RDSDATA/O-COIN
___________
4 O-F.LED
5 O-M.STB
6 O-CLK
7 O-DATA
8 O-VOLCTL
9 I-TMBASE
_____________
10 O-CKSFT
11 RESET
12 I-ACOFF
13 I-TU-SIG/I-MS
14 VSS
15 CF1
16 CF2
17 VDD1
18 N.C
19 I-KEY1
20 I-KEY0
21 I-DSW
22 I-CDTSW
23 I-ENC1
24 M SENSOR
25 O-CE
26 N.C.
27 I-LEVEL
28 I-RDS-CLK/I-WRQ
29 I-RMC
30-42 G1-G13
43-45 P33-P35
46 VDD3
47-50 P29-P32
51 VP
52-63 P17-P28
________
64 P16/BBE
______________
65 P15/DOLBY
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I/O
I Connected to stereo detection and tuner CD ASP LA9241ML pin-54 DRF.
Connected to tuner PLL IC LC72131 pin-6 DO and connected to CD DSP
I
LC78622ED pin-55 SQOUT.
Connected to RDS data input CD DSP LC78622ED pin-56 COIN and CD ASP
I
LA9241ML pin-52 DAT.
O Function LED control output.
O Connected to main shift resistor 4094 pin-1 STB.
Connected to front shift resistor BU2092 pin-3 CLK, main shift resistor 4094 pin-3
O
CLK, and tuner PLL IC LC72131 pin-5 CL.
Connected to front shift resistor BU2092 pin-2 DATA, main shift resistor 4094 pin-
O
2 DATA, and tuner PLL IC LC72131 pin-4 DI.
O Connected to VOL/P.EQ IC M62439SP pin-! CONT.
I Reference clock input for clock PLL IC LC72131 pin-7.
O Clock shift output is shifted: "L"
I/O Microprocessor reset.
I Hold status detection.
I RDS signal level AD value input, and CD ASP LA9241ML pin-52 DAT.
— GND.
— Connected to 5.76 MHz oscillator
— Connected to 5.76 MHz oscillator.
— Microprocessor power supply. (µ-com 5 V)
— Not connected.
I Key AD value input.
I Key AD value input.
I Deck MECA status detection input. (AD)
I CD tray OPEN/CLOSE status detection input. (AD)
I AD value input from multiple jog rotary encoder outputs A and B.
I Electronic VOL's AD value input from rotary encoder outputs A and B.
O Connected to tuner PLL IC LC72131 pin-3 CE.
— Not connected.
I Level meter input.
I Connected to RDS CLK input and CD DSP LC78622ED pin-53 WRQ.
I Remote control input.
O FL tube grid output.
O FL tube anode output.
— Microprocessor power supply. (µ-com 5 V)
O FL tube anode output.
— Connected to minus power supply for FL, -VFL.
O FL tube anode output.
O FL tube anode output, and INT.DIODE MATRIX input.
O FL tube anode output, and INT.DIODE MATRIX input.
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Description