Kenwood KDC 7012 Service Manual

Page 5

KDG-8011/7011/7012/7071RY

MICROCOMPUTER'S TERMINAL DESCRIPTION

System u-com : UPD78421 SGC (X25- : IC1)

0 Terminal description

Pin Pin Name Function IIO Description Processingroperation
1 P120/FITPO CHCONt O Changer1 control Active : Hi
2 P121/FITP1 CH_MUTE | Changer muting input MUTE requested : Hi
3 P122/RTP2 REOH 0 Handshake request to changer Active : Lo
4 P123/FITP3 ILL_ON O Illumination output Active : Hi
5 P124/FITP4 NC 0 Open
6 P125/RTP5 CD_SW2 l 12cm DISC detection 0N : Lo
7 P126/RTP6 CD_SW1 l ' Loading detection ON : Lo
8 P127/FITP7 NC 0 Open
9 Vdd Vdd - Positive power supply
10 X2 X2 - Main clock connection
11 X1 X1 - Main clock connection
12 Vss Vss - GND
13 XT2 XT 2 - Sub clock connection
14 XT1 XT1 - Sub clock connection
15 RESET RESET I Reset input Active : Lo ' '
16 POO/INTPO CH_FIST 0 Changer reset output Active : Hi
17 P01 IINTP1 FLCLK l HDS clock input
18 POZ/lNTPZ/NMI REQC l Handshake request from changer Active : Lo
19 P03/INTP3 O_CS l/O OPEL DATA CHIP SELECT
20 Po4/INTP4 O_CLK l/O OPEL DATA CLOCK
21 P05/INTP5 O_DATA ' l/O OPEL DATA LINE
22 P06/INTP6 SC_REQ l Handshake request from panel p-com
23 AVdd AVdd - A/D analog power supply
24 AVrefO AVrei - AID reference voltage input
. 1V or less; PHONE/2.5V
25 P10/ANIO PHONE l PHONE detection or more: N AVI MUTE
26 P1 1/ANI1 SRM_SW1 I SRMposition detect Open : Hi
27 P12/AN|2 NOISE l FM noise detect Analog input
28 P13/ANI3 SMETER 1 FM signal meter detect Analog input
29 P14/ANI4 |F_MODE l K2! IF selector WIDE : Hi/NAFIROW : Lo
30 P1 51AN|5 NC I GND
31 P16/ANI6 M_MUTE_FI | Mute request from mechanism Mute request : Lo
32 P17/ANI7 M_MUTE_L | Mute request trom mechanism Mute request : Lo
33 AVss AVss - A/D GND
34 P130/AN00 EXT_AMP O EXTVAmp control
35 P131/AN01 M_FIST 0 Reset output to mechanism RESET : Lo
36 AVrett - D/A reference voltage input
37 P70/RxDZ/Sl2 DATAC I Data line Irom changer
38 P71/TxD2/SOZ DATAH 0 Data line to changer
39 P72/ASCK2/SCK2 CH_CLK I/O Clock line from/to changer
40 P20/RxD1/Sl1 L.DATAL/SC_DATA I Data line from LCD driver
41 P21foD1/801 L_DATASIMC_DATA 0 Data line to LCD driver
42 P22/ASCK1/SCK1 L.CLKIMC_CLK O Clock line to LCD driver
43 P23/PCL M_STOP 0 Stop request to mechanism STOP request: Lo
44 P24/BUZ BEEP O BEEP output Active : Hi
45 P25/Sl0 PLL_CE |/O CE output to PLL
46 P26/SOO PLL_DATA 0 Data in/out with PLL
47 P27/SCKO PLL_CLK O Clock output to PLL
48 Pan/A0 CD-SW3 l DOWN switch detection ON : Hi
49 P81/A1 LO/EJ O Loading/Eject control Loading : Lo/Eiect : Hi
50 P82/A2 MOSW 0 Motor output Loading : Hi/Eject : Lo
51 PBS/A3 MECH_DET I Mechanism detection ON : H OFF : L