Kenwood KDC-CPS89 Service Manual page 8

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
43 RECQC O
44 CHMUTE O
45 TSI I
46 TSO O
47 TSCK O
48-55 A0-A7 O
56-63 D0-D7 I/O Data input/output terminal with S RAM
64-68 A8-A12 O
69-71 A13-A15 O
72 VSS -
73 A16 O
74 A17 O
75 RAMOK O
76 ELVADJ I
77 RD O
78 WR O
79 WAIT I
80 ASTB O
81 VDD -
82 PUSEL I
83 REQH I
84 SPLO+ O
85 SPLO- O
86 ELV+ O
87 ELV- O
88 SIM1 I
89 SEARCH O
90 TEST1 I
91 TEST2 I
92 8/7V O
93 EEPWR I
94 TEST/VPP I
95 SRVSEL I
96 SLNSA I
97 SDA I/O Data input/output with EEPROM
98 SCL O
99 PON O
100 ARMSW I
Description
Communication request to H/U
Audio mute request to H/U
Text data input from servo IC
Text data output to servo IC
Text data clock to servo IC
Address setting terminal for S RAM
Address setting terminal for S RAM
Chip enable setting terminal for S RAM
Ground connection terminal
Chip enable setting terminal for S RAM
Chip enable setting terminal for S RAM
Pickup check judging terminal for production
Mechanism deck ascent/descent position terminal
Read-out to S RAM control output
Write to S RAM control output
Waiting time insertion input when accessing S RAM Not used(pull down to GND lines.)
Chip selection to S RAM
Positive power supply connection terminal
Pickup type select terminal
Communication request from H/U
Spindle/Loading control terminal
Spindle/Loading control terminal
Mechanism deck ascent/descent terminal
Mechanism deck ascent/descent terminal
Destination input 1
Search mode output
Test mode terminal 1 for test mode
Test mode terminal 2 for test mode
Motor driver IC power voltage control output
EEPROM write mode terminal for production
Flash ROM program mode terminal
Servo active mode terminal (no mechanism movement) Not used(pull down to GND lines.)
Sled non-sensitive area ON/OFF terminal
Clock output to EEPROM
PON output
Arm switch input
KDC-CX87/CPS87
Processing Operation
"Lo" : Communication requested
"Lo" : Audio mute requested
Not used(pull down to GND lines.)
Connected to GND lines.
Not used(pull down to GND lines.)
Not used(N.C.)
Not used(pull up to D 5V lines.)
Not used(N.C.)
Connected to D 5V lines.
Not used(pull up to D 5V lines.)
"Lo" : Communication requested
"Hi" : adapted for CD-TEXT
"Lo" : not adapted for CD-TEXT
Not used(N.C.)
Not used(pull down to GND lines.)
Not used(pull down to GND lines.)
"Hi" : 7V, "Lo" : 8.5V
Not used(pull down to GND lines.)
Not used(connected to GND lines.)
Not used(pull down to GND lines.)
"Lo" : AVR & LPS POWER ON
"Hi" : Arm switch ON
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