Kenwood KDC-6024/Y Service Manual page 6

KDC-6024/Y/X469
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Name
51 PS1-2
52 B.U-DET
53 ACC-DET
54 DIMMER
55 BVDD
56 BVSS
57 EXT AMP CON
58 SVR
59 P-MUTE
60 P-STBY
61 NC
62 PRE MUTE R
63 PRE MUTE L
64 TUNER
65 O-DATA
66 O-CLK
67 O-CE
68 LX-RST
69 LX-CON
70 AVCONT
71 AVDD
72 AVSS
73 AVREF
74 PHONE
75~81 NC
82 S-METER
83 NOISE
84 IFC-OUT
85 LX-MUTE
86 LX-REQ-M
87 R-CLK
88 LX-REQ-S
89 KEY-REQ
90 LO.S SW
91 12EJE SW
92 EJECT
93 8EJE SW
94 LX-DATA-S
95 LX-DATA-M
96 LX-CLK
97 L DATAL
98 L DATAS
99 L CLK
100 PLL DATA
6
I/O
O Power supply IC control terminal
I BU detect input terminal ( BU detect : L )
I ACC detection input terminal (ACC detect : L)
I Illumination detect terminal from CAR (illumination ON : L )
- Power supply input terminal (BU 5V)
- Open
O EXT. amp control terminal (Active H)
O SVR control for Audio power IC
O Muting control for Audio power IC
O STBY control for Audio power IC (Power IC ON : H )
- Open
O Rch pre mute output terminal (Active H)
O Lch pre mute output terminal (Active H)
O Noise detection (FM seek,AM search : L )
O DATA signal output for EXT. display (Handling for OPEL display)
O CLK signal output for EXT. display (Handling for OPEL display)
O CE signal output for EXT. display (Handling for OPEL display)
O Reset signal output to EXT. unit
O Control signal output to EXT. unit (ON : H , OFF : L)
O Control for A/D reference voltage
- Power supply input terminal (BU 5V)
- Open
I A/Dereference voltage input terminal
I Mobil phone detection input terminal
- GND
I S meter detection input terminal
I FM noise detection input terminal
I IFC OUT input terminal
I Request signal input terminal from EXT.unit (Mute ON : L )
O Request signal output terminal to EXT.unit (Request : L)
I RDS decoder CLK input terminal
I Request signal input terminal from EXT.unit (Request : L)
I Request for communicate from LCD driver IC (KEY input : L )
I Loading start SW detection input terminal (Loading start : L )
I 12cm CD disc eject SW detection input terminal (12cm disc : L )
I Eject detection terminal (KEY input : L)
I 8cm CD disc eject SW detection input terminal (Not used)
I DATA signal input from EXT. unit
O DATA signal output to EXT. unit
I/O CLK signal input/output to EXT. unit
I DATA input terminal from LCD deriver IC
O DATA output terminal to LCD driver IC
O CLK output terminal to LCD driver IC
I/O Data input / out put terminal to Front-end
Description/Processing Operation