Pin Description - Kenwood DM-SE7 Service Manual

DM-SE7/SE7(G)/SE9
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3 7 63 1515 0

1-2 Pin description

No. Name I/O
1,2 A16,17 O SRAM address
3 FLDCE O FL display driver CE
4 EXCK O Extension port clock
5 RD O SRAM reading
6 WR O SRAM writing
7 CS O SRAM CS
8 STB O SRAMASTB
9 Vdd - Microcomputer power supply
10 EXDT O Extension port data
11 EXLAT O Extension port latch
12 XRST I System IC reset
13 SLC O E2PROM clock
14 MNT2 I System IC BUSY
15 SENS I System IC SENS
16 POWER O POWER
17 LDON O Laser ON
18 RMS O Pickup microwave satisfactory
19 RECSW I Mechanism REC position switch
20 REFLECT I Disc high reflex / low reflex switch
21 PHOTSW - Mechanism PLAY position detection
22 (GND)TEST - Microcomputer power supply
23 PROTECT I Disc protect switch
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L 13942296513
24 STTLMT I Mechanism pickup position switch
25 D1SCIN I Mechanism disc insertion switch (L:Disc out SW ON)
26 VLCK O SRC clock
27 RECP O System IC RECP
28 XLAT O System IC latch
29 MNT3 I System IC spindle LOCK
30 MNT0 I System IC FOK
31 LOADOUT O Loading motor OUT direction drive
32 LOADIN O Loading motor IN direction drive
33 SCHNG O E2PROM data output change
34 SDA I/O E2PROM data
35 TX O System IC TX
36 BACKCHK O Back-up voltage check ON
37 Vdd - Microcomputer power supply
38 X2 O Oscillation element (12.5MHz)
39 X1 I Oscillation element (12.5MHz)
40 VSS - Microcomputer power supply
41,42 XT2,1 O Clock oscillation element (Unused)
43 RESET I Microcomputer reset
44 REM I Remote control input
45 XlNT I ATRAC interrupt
46 CE I Microcomputer CE
47 SQSY I SYNC interrupt
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48 DQSY I Inner DlN interrupt
49 SSQSY I External DlR interrupt
50 MNT1 I System IC shock detection
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51 Vdd - Microcomputer power
52 +5V - A/D standard voltage
4
CIRCUIT DESCRIPTION
Description
(L:SRAM enable)
(H:Power on)
(H:Laser diode ON)
(H:ON)
(L:REC SW ON)
(L:High reflex)
(L:Phot sensor ON)
(L:Start limit SW ON)
(L:Loading IN)
(L:Loading OUT)
(H:SDA output)
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2 9
8
No. Name I/O
53 - I Unused
54~56 KR1~3 I Key return 1~3
57 - I Unused
58 INISW I Destination change
59 BACKV I Backup voltage detection
60 - I Unused
61 GND - Microcomputer power
62 - I Unused
63 VLDT O SRC data
64 +5V - D/A standard voltage
65 SRDT I System IC input data
66 SWDT O System IC output data
67 SCLK O System IC clock
68 CRXD I External unit receiving data
69 CTXD O External unit transmission data
70 CENA I External unit correspondence permission
71 VOLLAT O Electron volume latch
72 MUTE O MUTE terminal
73 DRDT I DIR reading data
74 DWDT O DIR, display driver data
75 DCLK O DIR / display driver clock
76 DLAT O DIR latch
Q Q
77 DEMPH I DIR emphasis
3 6 7 1 3 1 5
78 SRCLAT O SRC latch
79,80 DSUB2,1 I DIRSUB2,1
81 SBUSY O 16bit synchro BUSY
82 VLCK O 16bit synchro DATA
83 BACKON O Back-up voltage charge ON
84-91 AD0~7 O SRAM address / data
92-99 A8~15 O SRAM address / data
100 Vss - Microcomputer power
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9 4 2 8
Description
0 5 8 2 9 9 4 2 8
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9 9
9 9