Marantz DV4000 Service Manual download pdf (Page 44)

BU9253 (Digital delay)

15-19

Pin No. Port Name I/O FUNCTION

67 AVRTM I ECC interruption request input (end of output stream of 2060 bytes data) .

68,69 DGND – Ground for digital section.

70 SDA(I2C) I/O Serial data in/out from/to EEP-ROM & video encoder.

71 SCL O Serial clock output to the EEP-ROM & video encoder.

72 STAT I CD-DSP status input.

73 X0A I Not used.

74 X1A O Not used.

75 XSRTM I ECC interruption request input (end of block signal).

76 XINT.DEC I Interruption request from the Ziva MI-COM.

77 XINT.SER I Interruption request from the servo MI-COM.

78 OPEN-SW I Disc tray open detect input pin.

79 CLOSE-SW I Disc tray close detect input pin.

80 CLAMP-SW I Disc changer tray position detect input pin.

81 PHOT-IN I Disc changer tray position detect photo sensor input pin.

82 LOAD.F

O Loading motor direction control output.

83 LOAD.R

84 CHG.M.R

O Disc changer motor control output.

85 CHG.M.L

86 HSTX I hardware standby pin. (Pulled up)

87-89 MD0-MD2 I Bus mode setting pins.

90 RSTOUT I Reset signal input from the output control MI-COM.

92 X0 I

4 MHz crystal connecting pin.

93 X1 O

95-102 HAD00-HAD07 I/O System bus serial data/address I/O pins.

103-116 HA08-HA21 O System bus address output pins.

117,118 HA22,HA23 O System bus address output pins for chip select circuit.

120 ALE O System bus address latch enable output.

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Marantz DV4000 Service Manual Page 44