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14
RXD-M32MD
CIRCUIT DESCRIPTION
Pin No.
Pin Name
I/O
Description
51
REC/PLAY
O
Deck rec/play control.
52
BIAS
O
Deck bias control.
53
120/70
O
Deck EQ. control.
54
A/B-1
O
Mode selection for deck.
55
A/B-2
O
Mode selection for deck.
56
B-1/2
O
Mode selection for deck.
57
SD
I
SD detector input.
H = NO TUNED
L = TUNED
58
STEREO
I
Stereo detector input.
H = MONO
L = STEREO
59
PLL_DATA
O
PLL IC data output.
60
PLL_DO
I
PLL IC data input.
61
PLL_CE
O
PLL IC chip enable.
62
VCC(B.U)
I
Power 5.0v).
63
PLL_CLK
O
PLL IC clock output.
64
VSS
I
GND.
65
VOL_CLK
O
Clock output to selector IC.
66
VOL_DATA
O
Data output to selector IC.
67
CLOSE_SW
I
Close detection switch input for CD door.
H = OF F
L = ON
68
OPEN_SW
I
Open detection switch input for CD door.
H = OF F
L = ON
69
DOOR F
O
CD door (open) control output.
H = ON
L = OFF
70
DOOR R
O
CD door (close) control output.
H = ON
L = OFF
71
LCD_RST
O
Reset signal output to LCD driver IC.
H = NORMAL
L = RESET
72
LCD_CS
O
CS signal output to LCD driver IC.
73
BACK_LIGHT
O
Back light control output.
74
SP_RERAY
O
Speaker relay control output.
H = ON
L = OFF
75
PROTECTION
O
Detection input port for protection circuit
H = PROTECTION ON
76
H.P SW
I
Headphones detection input.
H = OFF
L = ON
77
A_MUTE
O
Audio muting control output.
H = OFF
L = ON
78
B.U SW
O
Unused.
79
DSTB
I
MD STB input port.
80
SEARCH
O
MD search output.
81
MD_ST
O
MD ON/CD sync. output.
82
MD_RST
O
Reset signal output to MD.
83
LOAD SW
I
Loading switch input from MD.
84
PDOWN
O
MD power supply.
H = ON
L = OFF
Power relay control output.
H = ON
L = OFF
CD power ON/OFF control.
H = NORMAL
L = AC OFF
CD monitor output.
H = ON
L = OFF
Speed control port for CD.
H = ON
L = OFF
Unused.
A/D key (key1) input port.
A/D key (key2) input port.
RDS Slevel input.
Detection port for MD back up.
Detection port for deck reel pulse.
95
TYPE
I
Discrimination port for destination.
96
AVSS
I
GND.
97
CD DIFFECT
I
Unused.
98
VREF
I
A/D reference v5V).
(No backed up 5V)
99
AVCC
I
A/D reference v5V).
(backed up 5V)
100
NC
O
Unused.
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