Kenwood KDC-138, Руководство по обслуживанию

Страница: 5 / 44

5
X34-56xx-xx
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application
Truth Value
Table
Processing Operation Description
43 PON CD O CD mechanism power supply control H: Power ON
44 CD LOEJ I/O CD motor control q Refer to the truth value table
45 CD MOTOR I/O CD motor control q Refer to the truth value table
46 VFD CE O VFD control request
47 CD DRIVEMUTE O Motor driver mute output
48 CD CCE O CD mechanism chip enable
49 NC - Not used
50 CD MRST O CD mechanism μ -com reset H: Normal, L: Reset
51~53 NC - Not used Output L fi xed
54 CD MUTE I CD mute request L: Mute request
55 CD DISC12 SW I 12cm disc detection Pull-up (B.U.)
56 ROTARY CCW I VOL key input Detects pulse width
57 ROTARY CW I VOL key input Detects pulse width
58~61 NC - Not used Output L fi xed
62 VCC2 -
63 NC - Not used Output L fi xed
64 VSS -
65 NC - Not used
66 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station
67 NC - Not used
68 MUTE I/O Mute L: Mute OFF, Hi-Z: Mute ON
69 NC - Not used
70 LX RST O Forced reset to slave unit H: Reset, L: Normal
71 LX CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF
72 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF
73 LX REQ M O Communication request to slave unit
74 NC - Not used
75 LX REQ S I Communication request from slave unit Pull-down (GND)
76 PWIC SVR O SVR discharging circuit
During 500ms after power OFF and momentary
power down: H, Since then: L
77 PWIC STBY O Power IC standby control Power ON: H, Power OFF: L
78 PWIC MUTE O Power IC mute
STANDBY source/Momentary power down: L,
TEL mute: L
79 ACC DET I ACC power supply detection ACC found: L, No ACC: H
80 BU DET I Detection of momentary power down
BU found: L, No BU/Momentary power down: H
(Operates after less than 4ms after momentary
power down is detected)
81~83 NC O Not used Output L fi xed
84 TUN SMETER I S-meter input
85 TYPE1 I Destination switching
86 TYPE2 I Destination switching