8
DPX501/501U/501UY
DPX-MP2090U
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Application
Truth
Processing Operation Description
Value Table
69
OEM DISP CLK
I/O
External display clock
External display
(Destination K and E only)
70
OEM DISP CE
I/O
External display control request
External display
(Destination K and E only)
71
EJECT
I
Eject key input (Flip-down panel model only)
L: Eject
72
P CON
O
External amplifier control
H: POWER ON, L: POWER OFF or STANDBY
73
VFD KEY REQ
I
Communication request from VFD driver
Connects to INT
74
ANT CON
O
Power antenna control
Tuner ON: H
75
ILLUMI DET
I
Dimmer illumination detection
L: ON, H: OFF
76
BU DET
I
Momentary power-down detection
L: BU found, H: No BU or momentary power down
77
ACC DET
I
ACC power supply detection
L: ACC found, H: No ACC
78
(PWIC SVR)
O
SVR discharging circuit
H: POWER OFF or 5 seconds after momentary
power down, L: Other conditions
79
PWIC MUTE
O
Power IC mute
L: STANDBY, momentary power down or TEL mute
80
PWIC STBY
O
Power IC standby control
H: POWER ON, L: POWER OFF
81
LX CON
O
Start-up request to slave unit
H: Slave unit starts up, L: Slave unit stops
82
MUTE PRE R
O
Rch preout mute
CD MUTE R is Lo: H (CD playing), Momentary power
down: H, L: DUAL ZONE or NAVI INT
83
MUTE PRE L
O
Lch preout mute
CD MUTE L is Lo: H (CD playing), Momentary power
down: H, L: DUAL ZONE or NAVI INT
84
MUTE 0
I/O
E-VOL front mute
L: Mute ON, Hi-Z: Mute OFF
85
MUTE 1
I/O
E-VOL rear mute
L: Mute ON, Hi-Z: Mute OFF
86
MUTE 2
I/O
E-VOL mute (Except front/rear)
87
LINE MUTE
I
Line mute detection
TEL mute: Below 1V
NAVI mute: Over 2.5V
88
MUTE PRE SW
I/O
NF preout mute
L: Mute ON, Hi-Z: Mute OFF
OFF fixed: Selecting REAR in REAR/SUB selection
89
PWIC DC DET
I
DC offset error detection
90
LX RST
O
Forced reset to slave unit
H: Reset, L: Normal
91
MUTE C
I/O
E-VOL mute
L: Mute ON, Hi-Z: Mute OFF
92
NC
-
Not used
L fixed
93
RDS NOISE
I
FM noise detection
94
AVSS
-
95
TUN SMETER
I
S-meter input
96
VREF
-
Connects to P.ON
97
AVCC
-
Connects to VCC
98
LX DATA S
I
Data from slave unit
99
LX DATA M
I/O
Data from and to slave unit
100
LX CLK
I/O
LX-BUS clock
