Kenwood KDCX 789 Service Manual
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Extracted text from Kenwood KDCX 789 Service Manual (Ocr-read)
Page 7
KDC-MP828/W7531/W7531Y/W8531
AN8531Y/X789/X8529/X889
MICROCOMPUTERS TERMINAL DESCRIPTION
Pin No. Pin Name IIO Function Processing Operation
43 SOL l/O E2PROM IZC clock MAX 100kHZ
44 PON PANEL l/O Panel 5V control ON : H (Momentary power down/Panel detached)
11 Minutes after ACC OFF : Hi-Z
45 DSI l/O DSI control
46~49 NC - Not used.
50 PM MOT1 0 Panel motor control 1 Refer to Truth Value Table (PANEL MOTOR)
51 PM MOT2 0 Panel motor control 2 Refer to Truth Value Table (PANEL MOTOR)
52 EPM | Flash EPM
53 PM OPEN l Panel full open detection Refer to Truth Value Table (PANEL MECHA)
54~56 NC - Not used
57 P5V DIS l/O Panel 5V discharge control H : Discharge, Other :Hi-Z
58 PM CLOSE l Panel mechanism close detection Refer to Truth Value Table (PANEL MECHA)
59 ROMCOR DET | E2PROM write request H :Write
60 PM DET | Panel mechanism detection H : Function check in progress
61 SC CON 0 Inside-panel communication (Chip enable when flash) POWER OFF, ACC OFF : L
62 NC - Not used
63 TUN TYPE1 | Destination setting 1 TUN TYPE1 : L, TUN TYPE2 : L
64 TUN TYPE2 | Destination setting 2 TUN TYPE1 : L, TUN TYPE2 : L
65,66 NC - Not used
67 CD D|8012 SW | 120m CD detection
68 CD LOS SW | CD loading detection
69 CD MUTE R | CD mute (Rch) request L : Rch mute request
70 CD MUTE L | CD mute (Lch) request L : Lch mute request
71 W 0 CD mechanism microcomputer reset L : Reset, H :Normal
72 CDMTOP 0 CD mechanism microcomputer stop L : Mechanism microcomputer stop,
H : Mechanism microcomputer in operation
73 NC - Not used
74 CD LOE LIM SW | CD detection (Chucking SW) H : Loading complete, L :No disc
75 CD LOEJ l/O CD motor control Refer to Truth Value Table (CD MOTOR / CD LOEJ)
76 CD MOTOR 0 CD motor control Refer to Truth Value Table (CD MOTOR / CD LOEJ)
77 PON lLLUMl l/O Key illumination power supply control ON :H, OFF : Hi-Z
78 PON CD l/O CD/WMA power supply control At time of CD source: H, Other than CD : Hi-Z
79 PON 0 Power supply control POWER ON : H, POWER OFF : L
80 PON FL+B O Fruorescent indicator tube bias power supply control POWER ON : H, POWER OFF or display black out : L
81 m l/O Fruorescent indicator tube filament power supply control POWER ON : L, POWER OFF or display black out : Hi-Z
82 F SEL1 O SW-Reg frequency switching
83 F SEL2 O SW-Reg frequency switching
84 DIAG l/O P-CON excess current surveillance
85 VCCZ -
86 EXT AMP CON l/O External amplifier control
87 VSS -
88~91 TYPE 1~TYPE4 | Destination switching
92 NC - Not used
Page 10
KDC-MP828/W7531/W7531Y/W8531
AN8531Y/X789/X8529/X889
MICROCOMPUTERS TERMINAL DESCRIPTION
10
Pin No. Pin Name IIO Function Processing Operation
45 m | Data reception from system p-com UART communication 500kbps
46 FM 0 Data transmission from panel UART communication 500kbps
47 m 0 Fruorescent indicator serial communication reference clock Reference clock 4.125MHz
48 m | Key return Interruption possible
49 m 0 Fruorescent indicator serial control data
50 (W | Serial synchronization clock Synchronized to Fruorescent indicator CLK
51 FL EL 0 Fruorescent indicator skip shilt control H or Hi-Z :Odd number skip, L : Even number skip
52 m 0 Fruorescent indicator serial control data
53 CLK-INZ | Serial synchronization clock Synchronized to Fruorescent indicator CLK
54 FL LAT O Fruorescent indicator latch control
55 W O Fruorescent indicator serial control data
56 3.3VDD - 3.3V
57,58 X2,X1 | Clock 6.6MHZ
59 CVSS - Connect to GND
60 CKSEL - Connect to GND
61 PSEL - Connect to VDD
62 2.5VDD - 2.5V
63 V38 - Connect to GND
64 MODEO - Connect to GND
65 MODE1 - Pull down
66 m | Input from reset IC
67 AVDD1 | D/A conversion reference voltage Connect to D3.3V
68,69 NC - Pull down
70,71 AVSS1,AVSSO - D/A conversion reference GND
72 AVDDO - A/D conversion reference voltage Connect to D3.3V
73 WAVE IN | Voice input AD read
74 F01 | BPF (63Hz) AD read
75 F02 | BPF (150Hz) AD read
76 F03 | BPF (330Hz) AD read
77 F04 | BPF (1 kHz) AD read
78 F05 | BPF (3.3kHz) AD read
79 F06 | BPF (10kHz) AD read
80 NC - Pull down
81 2.5VDD - 2.5V
82 VSS - Connect to GND
83 NC - Not used
84 TYPE I Whether there is customizing or not designation setting H : Flash ROM (This model), L : Mask ROM (Other model)
85 NC (VREFCON) 0 Not used
86 FWD | Remote controller signal Detection with pulse width
87 PON FL+B O Fruorescent indicator bias power supply switch H : ON, L : OFF
88 PON FLVDD l/O Fruorescent indicator logic section power supply switch H : ON, Hi-Z : OFF
89 PON 5V l/O 5V power supply switch Remote controller IC / Space analyzer IC power
supply H :ON, Hi-Z : OFF