Kenwood KDCX 789 Service Manual

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Kenwood KDCX 789 Service Manual

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