Kenwood KDC-MP928 Service Manual page 9

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MICROCOMPUTER'S TERMINAL DESCRIPTION
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Pin No. Pin Name
93 OEM_DISP_DATA I/O
94 OEM_DISP_CLK
95 OEM_DISP_CE
96 NC
97 P_CON
98 NC
99 ANT_CONT
100 ILLUMI_DET
101 BU_DET
102 ACC_DET
103 (PWIC_SVR)
104 PWIC_MUTE
105 PWIC_STBY
106 LX_CON
107 MUTE_PRE_R
108 MUTE_PRE_L
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109 MUTE_0
110 MUTE_1
111 MUTE_2
112 MUTE_A
113 DSP MUTE
114 MUTE_C
115 DSP_INIT_RST
116 DSP_S_RST
117 DSP_RQ
118 DSP_CS
119 NC
120 LINE_MUTE
121 NC
122 PWIC_DC_DET
123 LX_RST
124 G_Y_OUT
125 G_X_OUT
126 RDS_NOISE
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127 AVSS
128 TUN_SMETER
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I/O Application
External display DATA
I/O External display CLK
I/O External display control request
O Not used
O External amplifier control terminal
O Not used
O Power antenna control
I Dimmer illumination detection
I Momentary power down detection
I ACC power supply detection
O (SVR discharge circuit)
O Power IC MUTE terminal
O Power IC standby control
O Startup request to slave unit
O PRE_OUT MUTE Rch
O PRE_OUT MUTE Lch
O E-VOL FRONT MUTE terminal
O E-VOL REAR MUTE terminal
O E-VOL OTHER MUTE terminal
O E-VOL Main MUTE terminal
I/O DSP MUTE terminal
O E-VOL Aux MUTE terminal
O DSP initial reset terminal
O DSP system reset terminal
O DSP request terminal
O DSP chip select terminal
O Not used
I Line mute detection
O Not used
I DC offset detection terminal
O Hard reset to the slave unit
I
I
I FM noise detection terminal
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I S-meter input
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Processing / Operation / Description
External display
External display
External display
Output L-fixed
POWER ON : H, POWER OFF : L, ALL OFF : L
Output L-fixed
TUNER ON : H
L : ON, H : OFF
BU exists : L, BU does not exist or momentary power down : H
With ACC : L, No ACC : H
(POWER OFF 5 sec. at momentary power down : H, Thereafter : L)
During ALL OFF or momentary power down : L, During TEL MUTE : L
POWER ON : H, POWER OFF : L
H : Slave unit ON, L : Slave unit OFF, LX specification
When M MUTE R is L : L (When CD is used)
During momentary power down : L
H-fixed on my when in 2 zones and NAVI interruption
When M MUTE L is L : L (When CD is used)
During momentary power down : L
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H-fixed on my when in 2 zones and NAVI interruption
ON : L, OFF : H
ON : L, OFF : H
ON : L, OFF : H
ON : L, OFF : H
ON : L, OFF : Hi-Z
ON : L, OFF : H
L : Reset, H : Reset released
L : Reset, H : Reset released
L : Request
L : DSP select
Output L-fixed
TEL MUTE : 1V or less, NAVI MUTE : 2.5V or more
Output L-fixed
H : Reset, L : Normal
FST F/E control specification
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Seekstop voltage is F/E specification
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KDC-MP928/PSW9531
/PSW9531Y, XXV-01D
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