Kenwood KDC-C517FM Service Manual page 6

KDC-C517FM, C717/Y
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
41 DATAC
42 HCLK
43 RECQC
44 CHMUTE
45 TSI
46 TSO
47 TSCK
48-55 A0-A7
56-63 D0-D7
64-68 A8-A12
69-71 A13-A15
72 VSS
73 A16
74 A17
75 RAMOK
76 ELVADJ
77 RD
78 WR
79 WAIT
80 ASTB
81 VDD
82 PUSEL
83 REQH
84 SPLO+
85 SPLO-
86 ELV+
87 ELV-
88 SIM1
89 SEARCH
90 TEST1
91 TEST2
92 8/7V
93 EEPWR
94 TEST/VPP
95 SRVSEL
96 SLNSA
97 SDA
98 SCL
99 PON
100 ARMSW
6
I/O Description
O Data output from the changer
I/O Communication clock input/output with H/U
O Communication request to H/U
O Audio mute request to H/U
I Text data input from servo IC
O Text data output to servo IC
O Text data clock to servo IC
O Address setting terminal for S RAM
I/O Data input/output terminal with S RAM
O Address setting terminal for S RAM
O Chip enable setting terminal for S RAM
- Ground connection terminal
O Chip enable setting terminal for S RAM
O Chip enable setting terminal for S RAM
O Pickup check judging terminal for production
I Mechanism deck ascent/descent position terminal Not used(pull up to D 5V lines.)
O Read-out to S RAM control output
O Write to S RAM control output
I Waiting time insertion input when accessing S RAM
O Chip selection to S RAM
- Positive power supply connection terminal
I Pickup type select terminal
I Communication request from H/U
O Spindle/Loading control terminal
O Spindle/Loading control terminal
O Mechanism deck ascent/descent terminal
O Mechanism deck ascent/descent terminal
I Destination input 1
O Search mode output
I Test mode terminal 1 for test mode
I Test mode terminal 2 for test mode
O Motor driver IC power voltage control output
I EEPROM write mode terminal for production
I Flash ROM program mode terminal
I Servo active mode terminal (no mechanism movement) Not used(pull down to GND lines.)
I Sled non-sensitive area ON/OFF terminal
I/O Data input/output with EEPROM
O Clock output to EEPROM
O PON output
I Arm switch input
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 down to GND 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