Kenwood DMC-J7R Service Manual page 7

IC401 RH-iX2680AF03(IX2680AF):System Microcomputer
Pin No. Port Name Terminal Name Input/Output
1 P120 SWP UP Output Asterisk input Output for pull-up
2*~7* P121~P126 P121~P126 Output Not used
8 P127 OEM Input Product brand ID input
9 VDD VDD Input Positive power supply
10* X2 X2 Input Not used
11 X1 X1 Input Main system clock input
12 VSS VSS Input Ground potential
13* XT2 XT2 Input Not used
14 XT1 XT1 Input Subsystem clock input
15 RESET RESET Input Microcomputer hard reset input
16 INPUT0 DINT Input System LSI interruption request input
17 P01 SENSE Input System LSI servo sense input
18 P02 FOK Input Focus OK signal input
19 P03 XRST Outout System LSI hard reset output
20* P04 P04 Output Not used
21 P05 HDON Output Record head current control output
22 P06 VLIM Intput Volume limiting switch input
23 AVDD AVDD Input A/D converter analog positive power
24 AVREF0 AVREF0 Input A/D converter reference voltage input
25 ANI0 PLVINN Input Built-in battery voltage detection input
26 ANI1 PLVDCI Input DC jack voltage detection input
27 ANI2 PLVDRY Input Dry cell voltage detection input
28 ANI3 RKEY Input Remote controller key operation detection input
29 ANI4 HKEY1 Input Main unit key operation detection input 1
30 ANI5 HKEY2 Input Main unit key operation detection input 2
31 ANI6 TEMP Input Ambient temperature detection input
32 ANI7 CNTRY Intput Product destination ID input
33 AVSS AVSS Intput A/D converter ground potential
34 ANO0 LDVAR Output P.U. laser power set output
35* ANO1 MDOUT Output Internal motion mode output
36 AVREF1 AVREF1 Output D/A converter reference voltage input
37 P70 SYWR Output System LSI write enable output
38 P71 SYRD Output System LSI read enable output
39 P72 SYRS Output System LSI register selection output
40 P20 - Output Not used
41 SO1 RMDAT Output Remote controller display data output
42 P22 - Output
43 P23 HSTOP Input Main unit STOP key operation detection input
44 P24/BUZ BEEP Output Beep tone pulse output
45 P25 DSPSTB Output Main unit display control strobe output
46 SO0 DSPDAT Output Main unit display control serial data output
47 SCK0 DSPSCK Output Main unit display control serial clock output
48~55 P80~P87 SYD0~SYD7 In/Output System LSI parallel data bus
56 P40 EJECT Input Eject lever operation detection input *
57 P41 KHOLD Input Main unit key hold switch input
58 P42 RPLAY Input Remote controller PLAY key operation detection input
59* P43 HFON Output P.U. high frequency superposition control output
60 P44 LDON Output P.U. laser ON/OFF control output
61 P45 OPICGA Output P.U. detection sensitivity selection output
62 P46 RFLAT Output RF amp. IC data latch output
63 P47 RACLK Output RF/audio IC data clock output
64 P50 RADAT Output RF/audio IC serial data output
65 P51 PBLAT Output Playback audio IC data latch output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Function Pin No.
66
67
68
69
70
71
72
73
74
75
76*
77*
78
79
80
81
82
83*
84*
85*
86
87
88
89*
90
91
92
93
94
95
96
97
98
99
100
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
SYSTEM LSI EXTENSION PORT(IC:201/LR37648)
Pin No. Port Name
52,53
54
55
56
57
58
59
Table2:
E M P H 1
Port Name Terminal Name Input/Output
P52 RCLAT Output Record audio
P53 PBOPON Output Audio IC output stage control output
P54 MCPGIN Input Mic plug insertion detection input
P55 INPGIN Input Line/digital plug insertion detection
P56 INPGCK Input Line/digital plug type detection
P57 RCPCNT Output Record circuit power control output
VSS VSS Output Ground potential
P60 EMPHO Output Audio emphasis control output 0
P61 HPLAY Input Main unit PLAY key operation detection input
P62 HREC Input Main unit REC key operation detection input
P63 RTCCE Output Clock IC chip enable control output
P64 RTCWR Output Clock IC read/write control output
P65 CEDT In/Output Clock/EEPROM serial data input/output
P66 CECK Output Clock/EEPROM serial data input/output
P67 EPCS Output EEPROM chip selection output
VDD VDD Output Positive power supply
T15 SPIN Inout Spindle motor FG pulse detection input
P101 P101 Output Spare for sled motor control
P102 TEST0 Input Test mode setting input 0
P103 TEST1 Input Test mode setting input 1
P30 PSLINN Output Built-in battery power selection output
P31 PSLDCI Output DC jack power selection output
P32 PSLDRY Output Dry cell power selection output
P33 P33 Output Spare for sled motor control
P34 ELON Output Remote controller EL light control output
T100 CIN Input Truck cross signal detection input
P36 PHOLD Output Dry cell power ON holding output
P37 PCNT1 Output Power IC VREF feed control output
TEST/VPP VPP Output Test/R-ROM write power input
P90 PCNT2 Output Power IC VCC feed control output
P91 CKSTP Output Main clock stop control output
P92 DISCIN Input Disk insertion detection input
P93 INNSW Input Mechanism inner SW position detection input
P94 DISCPR Input Record enable/disable switch detection input
P95 PDCNT Output PD current control output for inner detection
I / O D e s c r i p t i o n s R e m a r k s
LDCNT1,2 O Recording head up/down control port.
- O No use
EMPH1 O Audio emphasis control port.
DCNT1 O Mechanism driver enable port. H= enable
OPTCNT O Power on/off for optical input circuitry.
DAPON O D/A converter control port H=work
ADPON O A/D converter control port H=work
EMPHASIS PORT Table3:
E M P H 0 D e s c r i p t i o n E M P H 1
H H fs: 32kHz ON H
H L fs: 48kHz ON H
L H fs: 48kHz OFF L
L L fs: 44.1kHz ON
L
Function
Table1: TEST PORT
T E S T 1 T E S T 0 D e s c r i p t i o n
table3 H H Normal mode
open H L No adjustment
table2 L H Test mode
L L Prohibition
H= on
LDCNT PORT
E M P H 0 D e s c r i p t i o n
H Brake
L UP
H DOWN
L OFF