Kenwood KDC-MP928 Service Manual page 12

KDC-MP928/PSW9531
/PSW9531Y, XXV-01D
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MICROCOMPUTER'S TERMINAL DESCRIPTION
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Pin No. Pin Name
102 NC
103 CE_SRAM
104 PON_TRI_RED
105 ROMCOR_SCL
106 ROMCOR_SDA
107 PON_BLUE_L
108 PON_BLUE_R
109 PON_GREEN
110 PON_RED
111 SA_RST
112 3.3VDD
113 EVSS
114~123 A25~A16
124 2.5VDD
125 VSS
126~133 A15~A8
134 3.3VDD
135 EVSS
136~142 A7~A1
TE
L 13942296513
143 NC
144 D15
Mechanism Microcomputer : 91CU27UG5UR8 (X32 : IC1)
Pin No. Pin Name
1 VREFL
2 DMUTE
3 CSRST
4 NC
5 LZM
6 RZM
7 BREQ
8 DSPINT
9 SREQ
10 NC
11 S_DATA
12 B_DATA
13 CLK
14 DSPTXD1
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15 DSPRXD1
16 DSPSCLK1
17 AM0
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18 DVCC
19 X2
12
I/O Application
O Not used
O SRAM operation permission
I/O Triangle red lighting switch
I/O For ROM correction
I/O For ROM correction
I/O Blue sub-illumination lighting switch, left
I/O Blue sub-illumination lighting switch, right
I/O Green key illumination lighting switch
I/O Red key illumination lighting switch
O Resetting spectrum analyzer IC
- 3.3V
-
O Address output
- 2.5V
-
O Address output
- 3.3V
-
O Address output
O Not used
I/O Data input/output
I/O Application
I ADC reference power supply input terminal (L)
O Driver MUTE
O (Decoder) Resetting control
O Not used
I 0bit MUTE detection (Lch)
I 0bit MUTE detection (Rch)
I (Decoder) BREQ signal input
I (DSP) interruption signal input
O (Decoder) SREQ signal output
O Not used
O (Decoder) Data output for serial data
I (Decoder) Data input for serial data
O (Decoder) Clock output for serial data
O (DSP) Data output for serial data
I (DSP) Data input for serial data
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O (DSP) Clock output for serial data
- ROM mode selection terminal
i
- BU3.3V
O Oscillator connection 26.88MHz
2 9
8
Processing / Operation / Description
Output is L at all time
L : SRAM access, Hi-Z : Wait
H : Light ON, Hi-Z : Light OFF
Input except when reading (including STB)
Input except when reading (including STB)
H : Light ON, Hi-Z : Light OFF
H : Light ON, Hi-Z : Light OFF
H : Light ON, Hi-Z : Light OFF
H : Light ON, Hi-Z : Light OFF
H : Reset, L : Normal
Q Q
3 6 7 1 3 1 5
Output L-fixed
Processing / Operation / Description
GND
L : STOP, H : MUTE OFF
L : RESET, H : NORMAL
Open, Output L-fixed
L : MUTE OFF, H : MUTE ON
L : MUTE OFF, H : MUTE ON
H : Interruption
Open, Output L-fixed
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H : NORMAL, L : External ROM mode
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9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
9 9