Kenwood KDC-MP928 Service Manual page 13

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MICROCOMPUTER'S TERMINAL DESCRIPTION
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Pin No. Pin Name
20 DVSS
21 X1
22 AM1
23 RESET
24,25 NC
26 NMI
27 ALE
28 DSPSTB
29 DSPA0
30 DSPRST
31, 32 NC
33 SEARCH
34 LOE/LIM_SW
35~39 NC
40 POND3.3
41 NC
42 PONCS
43~47 NC
TE
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48 DATA_MUTE
49 NC
50 NC (BOOT)
51~53 NC
54 MUTE L
55 MUTE R
56 NC
57 SDA
58 SCL
59 MSTOP
60~62 AN0~AN2
63 UNQID
64 AVCC
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I/O Application
- GND
I Oscillator connection 26.88MHz
- H-fixed
I Reset detection
O Not used
I Non-maskable interruption, Not used
O Not used
O (DSP) Data strobe signal output
(DSP) Command parameter
O
identification signal output
O (DSP) Reset control
O Not used
O Search condition output
I PU LIM detection SW
O Not used
O D3.3V POWER ON control terminal
O Not used
O CS7410-series power supply control terminal
O Not used
O Data output status
O Not used
Mask : Not used (output H) /
O
Flash (write terminal)
O Not used
O Lch audio MUTE control
O Rch audio MUTE control
O Not used
(System µ-com) I2C data
I/O
(System µ-com) I2C clock
I/O
I Standby restart interruption
I TEST0~TEST2
I Unique ID write permission
- ADC power supply terminal
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Processing / Operation / Description
L : RESET, H : NORMAL
Open, Output L-fixed
Open, Output prohibited (Hi-Z)
H : Transmitting parameter, L : Transmitting command
Open, Output L-fixed
H : In search, L : Normal (x2 : L-fixed)
H : LIM
Open, Output L-fixed
H : POWER ON
Open, Output L-fixed
H : POWER ON
Open, Output L-fixed
Q Q
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L : DATA output MUTE
Open, Output L-fixed
(Flash) L : WRITE, H : NORMAL
Open, Output L-fixed
L : MUTE ON
L : MUTE ON
Open, Output L-fixed
L : STOP, H : STOP release
PULL DOWN
L : Normal, H : During service write
BU3.3V
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KDC-MP928/PSW9531
/PSW9531Y, XXV-01D
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