Kenwood KDC-MP928, Service Manual

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13
KDC-MP928/PSW9531
/PSW9531Y, XXV-01D
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Processing / Operation / Description
20 DVSS - GND
21 X1 I Oscillator connection 26.88MHz
22 AM1 - H-fixed
23 RESET I Reset detection L : RESET, H : NORMAL
24,25 NC O Not used Open, Output L-fixed
26 NMI I Non-maskable interruption, Not used
27 ALE O Not used Open, Output prohibited (Hi-Z)
28 DSPSTB O (DSP) Data strobe signal output
29 DSPA0 O
(DSP) Command parameter
H : Transmitting parameter, L : Transmitting command
identification signal output
30 DSPRST O (DSP) Reset control
31, 32 NC O Not used Open, Output L-fixed
33 SEARCH O Search condition output H : In search, L : Normal (x2 : L-fixed)
34 LOE/LIM_SW I PU LIM detection SW H : LIM
35~39 NC O Not used Open, Output L-fixed
40 POND3.3 O D3.3V POWER ON control terminal H : POWER ON
41 NC O Not used Open, Output L-fixed
42 PONCS O CS7410-series power supply control terminal H : POWER ON
43~47 NC O Not used Open, Output L-fixed
48 DATA_MUTE O Data output status L : DATA output MUTE
49 NC O Not used Open, Output L-fixed
50 NC (BOOT) O
Mask : Not used (output H) /
(Flash) L : WRITE, H : NORMAL
Flash (write terminal)
51~53 NC O Not used Open, Output L-fixed
54 MUTE L O Lch audio MUTE control L : MUTE ON
55 MUTE R O Rch audio MUTE control L : MUTE ON
56 NC O Not used Open, Output L-fixed
57 SDA I/O (System
µ
-com) I2C data
58 SCL I/O (System
µ
-com) I2C clock
59 MSTOP I Standby restart interruption L : STOP, H : STOP release
60~62 AN0~AN2 I TEST0~TEST2 PULL DOWN
63 UNQID I Unique ID write permission L : Normal, H : During service write
64 AVCC - ADC power supply terminal BU3.3V
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