Kenwood KDC-X8529, Service Manual

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KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Function Processing Operation
9 SREQ O (Decoder) SREQ signal output
10 NC O Not used. Open output L-fixed
11 S_DATA O (Decoder) Data output for serial data
12 B_DATA I (Decoder) Data input for serial data
13 CLK O (Decoder) Clock output for serial data
14 DSPTXD1 O (DSP) Data output for serial data
15 DSPRXD1 I (DSP) Data input for serial data
16 DSPSCLK1 O (DSP) Clock output for serial data
17 AM0 - ROM mode selection terminal H : NORMAL, L : External ROM mode
18 DVCC - BU3.3V
19 X2 O Oscillator connection 26.88MHz
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 identification signal output H : Transmitting parameter, L : Transmitting command
30 DSPRST O (DSP) Reset control
31 NC O Not used. Open output L-fixed
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 (write terminal) (Flash) L : WRITE, H : NORMAL
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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