Aiwa CSD-MD50 Manual de Serviço descarregar pdf (Página 42)

40 DVSS – Digital GND.

41 XOE O Output enable pin for external DRAM.

42 XCAS O Output CAS for external DRAM.

43 A09 O Output address for external DRAM.

44 XRAS O Output RAS for external DRAM.

45 XWE O Write enable for external DRAM.

46 D1 I/O Data pass for external DRAM.

47 D0 I/O Data pass for external DRAM.

48 D2 I/O Data pass for external DRAM.

49 D3 I/O Data pass for external DRAM.

50 MVCI I Clock input pin for external VCO (784fs). (Connected to DVSS)

51 ASYO O Full swing output pin for playback EFM ("L" = VSS, "H" = VDD).

52 ASY1 I Input omparator slice voltage for playback EFM.

53 AVDD – Analog power supply.

54 BIAS I Input comparator bias current for playback EFM.

55 RFI I Input RF signal for playback EFM.

56 AVSS – Analog GND.

57 PDO O Output phase comparison for analog PLL of EFM decoder.

58 PCO O Output phase comparison for playback digital PLL, master PLL and record EFM PLL.

59 FILI I Input filter for playback digital PLL, master PLL and record EFM PLL.

60 FILO O Output filter for playback digital PLL, master PLL and record EFM PLL.

61 CLTV I

Input internal VCO control voltage for playback digital PLL, master PLL and record

EFM PLL.

62 PEAK I Input peak hold signal for beam spectrum.

63 BOTM I Input bottom hold signal for beam spectrum.

64 ABCD I Input beam spectrum signal.

65 FE I Input focus error signal.

66 AUXI I Backup input 1.

67 VC I Input midpoint voltage.

68 ADIO O Monitor output pin for A/D converter input signal. (Not used)

69 AVDD – Analog power supply.

70 ADRT I Input maximum voltage of A/D converter operation range.

71 ADRB I Input minimum voltage of A/D converter operation range.

72 AVSS – Analog GND.

73 SE I Input sled error signal.

74 TE I Input tracking error signal.

75 AUX2 I Backup input 2. (Connected to AVDD)

76 DCHG I Connected to the power supply of low impedance. (Connected to AVDD)

77 APC I Input error signal for laser digital APC. (Connected to AVDD)

78 ADFG I Input ADIP binary data FM signal (22.05kHz ± 1kHz).

79 FOCNT O Current setting output pin for CXA2523AR.

Pin No. Pin Name I/O Description

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 73 74

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Aiwa CSD-MD50 Manual de Serviço Página 42

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