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KDC-HD942U
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Pin Name
10
X2
11
X1
12
REGC
13
VSS
14
EVSS
15
VDD
16
EVDD
17
I2C SCL
18
I2C SDA
19-32
NC
33
BU DET
34
P.CON
35
PROTOCOL SEL
36
PHY SEL
37
RESERVED 0
38
RESERVED 1
39
MUTE
40,41
NC
42
TERMINAL RX
43
TERMINAL TX
44-46
NC
47
AVREF
48
AVSS
49
DIRANA INT END
50
DIRANA RESET
51,52
NC
53
HD P.ON
54
CAYMAN RESET
55,56
NC
57
TUNER P.ON
58
I2C SCL
59
I2C SDA
60
NC
61
3.3V F.SEL 0
62
3.3V P.ON
63
CHECKER 1
64
CHECKER 0
8
I/O
Application
I
20MHz
O
20MHz
-
Built-in regulator stabilization
-
VSS
-
EVSS
-
VDD 3.3V
-
EVDD 3.3V
I
System μ-com communication
I/O System μ-com communication
-
Not used
I
Back-up detection input
I
Power control (Stop) input
I
Communication protocol selection
I
Physical layer selection
O
Destination (Spare)
O
Destination (Spare)
I/O Mute output (Head unit)
-
Not used
I
External terminal
O
External terminal
-
Not used
-
-
I
Initial-end input from Dirana
O
Reset output to Dirana
-
Not used
HD (Cayman) P.ON
I/O
Switching power supply 3.3V ON/OFF
O
Reset output to HD (Cayman)
-
Not used
O
Tuner (L-Dice) P.ON, AF5V ON/OFF
I/O Dirana, Cayman, E2PROM communication
I/O Dirana, Cayman, E2PROM communication
-
Not used
I/O 3.3V REG frequency selection
Power supply 3.3V control
O
HD pack & module 3.3V/1.8V/1.2V control
O
Chip select start-up check
O
Chip select start-up check
Truth Value
Processing / Operation / Description
Table
External oscillation setting
External oscillation setting
Clock input from system μ-com
Data input/output with system μ-com
Output L fi xed
Not used
Rising edge: ON, L: OFF (Same timing as LX-BUS)
L: KAB (Kenwood Advanced Bus), H: LX-BUS
L: Head unit (Over I2C)
H: Black box (Protocol compliant)
Output L fi xed
Output L fi xed
Hi-Z: Mute cancelled, H: Mute
Output L fi xed
Output L fi xed
Hi when initial-end is output
L: Reset
Output L fi xed
H: 3.3V ON, Hi-Z: 3.3V OFF
H: Reset
Hi is output after P.CON becomes Hi
Output L fi xed
H: RF5V ON, L: RF5V OFF
I2C clock
I2C data input/output
Output L fi xed
H: 530kHz-1100kHz or 1610kHz-1700kHz in AM
Hi-Z: All sources except AM
Hi-Z: 1110kHz-1600kHz in AM
H: 3.3V ON, L: 3.3V OFF
H: ON, L: OFF
H: ON, L: OFF
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