Kenwood CKDC MP 676 F Service Manual

Page 6

CKDC-M P576
CKDC-MP676F/MP676V

MICROCOMPUTERS TERMINAL DESCRIPTION

TruthValue
Pin No. Pin Name I/O Application Processing [Operation / Description
Table
60 TUN FANC OUT 0 TUNER block (in p-com) check Only when test mode, E2P OK: H, E2P NG: L, Normal: L
61 PON FM l/O FM power supply control H:When FM is active, Hi-z:When FM is not active
62 VCC2 -
63 NC - Not used Fix to output L
64 V88 -
65 MUTE l/O MUTE L: MUTE OFF, Hi-z: MUTE ON
When momentary power down by POWER OFF,
66 PWIC SVR O SVR discharge circuit (Not used)
5 seconds : H, Thereafter: L
67 PWIC STBY 0 Power IC stand-by control POWER ON: H, POWER OFF: L
While STANDBY source,
68 PWIC MUTE 0 Power IC MUTE
Momentary power down: L , While TEL MUTE: L
69~74 NC - Not used Fix to output L
75 RDS CLK | RDS decoder CLK input (RDS model only)
76 TUN TYPE1 | Destination setting 1 (3) Refer to the truth value table
77 TUN TYPE2 | Destination setting 2 (3) Refer to the truth value table
78 TYPE1 | Destination change (3) Refer to the truth value table
79 TYPE2 | Destination change (3) Refer to the truth value table
80 TYPE3 | Destination change G) Refer to the truth value table
81 RDS NOISE | FM noise detection
82 TUN SMETER | 8 meter input
H: Normal
TUN RDS MUTE output
83 RDS AFS L 2 O L: FM/AM SEEK, AF search (L: When Tuner SRC Auto Zero)
(Not used in circuit, used in software)
Same process with RDS AFS L
84~86 NC - Not used Fix to output L
87 PWIC DC DET | DC offset detection
TEL MUTE: 1V or lower, NAVI MUTE: 2.5V or higher
88 LINE MUTE | Line mute detection
NAVI MUTE: 1V or lower and 2.5V or higher (J-TYPE)
89,90 NC - Not used Fix to output L
91 RDS DATA | RDS decoder DATA input
92 RDS QUAL | RDS decoder QUAL input
93 NC - Not used Fix to output L
94 ACC DET | ACC power supply detection L: ACC ON, H: ACC OFF
L: BU found, H: BU not found, momentary power down
95 BU DET | Momentary power down detection
Activated within 4ms after detection oi momentary power down
96 AVSS - Connect to V88
97 REF CON 0 VREF control Connect to VREF
98 VREF - Connect to REF CON
99 AVCC - Connect to VCC
100 NC - Not used Fix to output L

Page 7

CKDC-M P576

CKDC-MP676F/MP676V

MICROCOMPUTERS TERMINAL DESCRIPTION

Truth Value Table

(T) : Power supply lC (I03) control

@ :CD mechanism control operation

SEL1 (Pin No.11) CD MOTOR CD LOEJ
PS1 -2 PS1-3 P82-1 ILLUMI P-CON P-ANT Stop L L
L L L OFF OFF OFF Load H L
L L H ON OFF OFF Eject H H
H L H ON ON OFF Brake H Hi-z
H H H ON ON ON
(37 : Destination setting
SEL2 (Pin No. 12) Model TYPE 1 TVPE 2
PS1-1 P82-2 AUDIO SW5 AM KENWOOD brand model (initial Value) L L
L L OFF OFF OFF OEM model (with CRSC changed) L H
H L ON ON OFF KENWOOD brand model (with CRSC changed) H L
H H ON ON ON KENWOOD brand model (to support test-driving in EU) H H
(I) : Destination change
TYPE 3 TYPE 2 TYPE 1
Model
(Pin 80) (Pin 79) (Pin 78)
0 0 0 CKDC-MP576/MP676F/MP676V
O MECHANISM u-com: |C4 (X32- : CD PLAYER UNIT)
Processing Operation
Pin No. Pin Name No Application Remarks
Description
1 NC - Not used Low-fixed
2 EZP SCL I/O ROM correction E2P IZC clock
3~5 NC - Not used Low-fixed
6 VDD - 5V electric potential
7 GND - GND electric potential
8,9 NC - Not used Low-fixed
10,11 PON1, PON2 0 Power ON/OFF control H :ON, L : OFF
12 LOE/LIM SW | Down-limit SW detection L : Lim detection