7
KDC-MP4036U/MP435U/X491/W4537UA/W4537UAY
/W4537UG/W4537UGY/W4737U/W4737UY
Pin No.
Pin Name
I/O
Application
Truth
Value Table
Processing / Operation / Description
35
S SOC SCL
I
SOC
→
System µ-com clock
36-38
NC
-
Not used
Output L fi xed
39
ROMCOR DET
I
E2PROM writing request
H: Writing
39
EPM
I
EPM input when writing
40
DSI
I/O
DSI control
41
CD DISC12 SW
I
12cm CD detection
42
CD LOS SW
I
CD loading detection
43
CD MUTE
I
CD mute request
L: Mute request, H: Normal condition
44
VFD CE
O
VFD control request
H: VFD data transfer ready
45
SOC S RST
O
SOC reset
H: Normal condition, L: Reset
46
SOC S STOP
O
SOC stop
H: Normal condition, L: SOC stopped
47
NC
-
Not used
Output L fi xed
48
CD LOE LIM SW
I
CD detection (Chucking SW)
H: Loading completed, L: No disc
49
CD LOEJ
I/O
CD motor control
q
Refer to the truth value table
50
CD MOTOR
O
CD motor control
q
Refer to the truth value table
51
ROTARY CW
I
VOL key detection
Detects pulse
15-pulse/360°, 2-pulse/1-click
52
ROTARY CCW
I
VOL key detection
Detects pulse
15-pulse/360°, 2-pulse/1-click
53
PON PANEL
I/O
Panel 5V power supply
ON (For 11 minutes after ACC OFF): L
Momentary power down or Panel detached or 11
minutes after ACC OFF: Hi-Z
54
PON FL+B
I/O
FL fi lament power supply
H: ON, Hi-z: OFF
55
SW USB
I/O
VBUS5V control
H: ON, Hi-z: OFF (Depends on command order from
SOC)
56
NC
-
Not used
Output L fi xed
57
PON ILL
O
Key illumination power supply
H: Power ON, L: Power OFF
58,59
NC
-
Not used
Output L fi xed
60
VCC2
-
61
PON
O
Power supply control
H: Power ON, L: Power OFF
62
VSS
-
63,64
TYPE 1,2
I
Destination setting
w
Refer to the truth value table
65
NC
-
Not used
Output L fi xed
66
PCON
O
External amplifi er control
67~69
NC
-
Not used
Output L fi xed
70
ANT CON
O
Power antenna control
Tuner ON: H
71
NC
-
Not used
Output L fi xed
72
ACC DET
I
ACC power supply detection
ACC found: L, No ACC: H
73
BU DET
I
Detection of momentary power down
BU found: L, Momentary power down: H
MICROCOMPUTER’S TERMINAL DESCRIPTION
