Kenwood CKDC-MP576 Service Manual page 6

CKDC-MP576
CKDC-MP676F/MP676V
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
60 TUN FANC OUT
61 PON FM
62 VCC2
63 NC
64 VSS
65 MUTE
66 PWIC SVR
67 PWIC STBY
68 PWIC MUTE
69~74 NC
75 RDS CLK
76 TUN TYPE1
77 TUN TYPE2
78 TYPE1
79 TYPE2
80 TYPE3
81 RDS NOISE
82 TUN SMETER
83 RDS AFS L 2
84~86 NC
87 PWIC DC DET
88 LINE MUTE
89,90 NC
91 RDS DATA
92 RDS QUAL
93 NC
94 ACC DET
95 BU DET
96 AVSS
97 REF CON
98 VREF
99 AVCC
100 NC
6
I/O Application
TUNER block (in µ-com) check
O
I/O FM power supply control
-
- Not used
-
I/O MUTE
O SVR discharge circuit (Not used)
O Power IC stand-by control
O Power IC MUTE
- Not used
I RDS decoder CLK input (RDS model only)
I Destination setting 1
I Destination setting 2
I Destination change
I Destination change
I Destination change
I FM noise detection
I S meter input
TUN RDS MUTE output
O
(Not used in circuit, used in software)
- Not used
I DC offset detection
I Line mute detection
- Not used
I RDS decoder DATA input
I RDS decoder QUAL input
- Not used
I ACC power supply detection
I Momentary power down detection
-
O VREF control
-
-
- Not used
Truth Value
Processing / Operation / Description
Table
Only when test mode, E2P OK: H, E2P NG: L, Normal: L
H: When FM is active, Hi-z: When FM is not active
Fix to output L
L: MUTE OFF, Hi-z: MUTE ON
When momentary power down by POWER OFF,
5 seconds : H, Thereafter: L
POWER ON: H, POWER OFF: L
While STANDBY source,
Momentary power down: L , While TEL MUTE: L
Fix to output L
e
Refer to the truth value table
e
Refer to the truth value table
r
Refer to the truth value table
r
Refer to the truth value table
r
Refer to the truth value table
H: Normal
L: FM/AM SEEK, AF search (L: When Tuner SRC Auto Zero)
* Same process with RDS AFS L
Fix to output L
TEL MUTE: 1V or lower, NAVI MUTE: 2.5V or higher
NAVI MUTE: 1V or lower and 2.5V or higher (J-TYPE)
Fix to output L
Fix to output L
L: ACC ON, H: ACC OFF
L: BU found, H: BU not found, momentary power down
Activated within 4ms after detection of momentary power down
Connect to VSS
Connect to VREF
Connect to REF CON
Connect to VCC
Fix to output L