CXD2548 Ver la hoja de datos (PDF) - Sony Semiconductor

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CXD2548

CD Digital Signal Processor with Built-in Digital Servo and DAC

Sony Semiconductor 

CXD2548R

Pin

No.

Symbol

I/O

Description

37 FOK

O 1, 0 Focus OK signal output.

38 VDD1

Digital power supply.

39 VPCO1 O 1, Z, 0 Wide-band EFM PLL charge pump output.

40 VPCO2 O 1, Z, 0 Wide-band EFM PLL VCO2 charge pump output.

41 VCKI

I

Wide-band EFM PLL VCO2 oscillation input.

42 V16M

O 1, 0 Wide-band EFM PLL VCO2 oscillation output.

43 VCTL

I

Wide-band EFM PLL VCO2 control input.

44 PCO

O 1, Z, 0 Master PLL charge pump output.

45 FILO

O Analog Master PLL filter output (slave = digital PLL).

46 FILI

I

Master PLL filter input.

47 AVss4

Analog GND.

48 CLTV

I

Master VCO control voltage input.

49 AVDD4

Analog power supply.

50 RFAC

I

EFM signal input.

51 BIAS

I

Asymmetry circuit constant current input.

52 ASYI

I

Asymmetry comparator voltage input.

53 ASYO

O 1, 0 EFM full-swing output (low = VSS, high = VDD).

54 VC

I

Center voltage input.

55 FE

I

Focus error signal input.

56 SE

I

Sled error signal input.

57 TE

I

Tracking error signal input.

58 CE

I

Center error signal input.

59 RFDC

I

RF signal input. Input range: 2.15 to 5.0V. (when DVDD = AVDD = 5.0V)

60 RFC

I

Connects an RF signal LPF time-constant capacitor.

61 ADIO

O

Operational amplifier output.

62 AVss3

Analog GND.

63 IGEN

I

Connects an operational amplifier current source reference resistor.

64 AVDD3

Analog power supply.

65 TES2

I

Test pin. Normally fixed to low.

66 TES3

I

Test pin. Normally fixed to low.

67 Vss2

Digital GND.

68 TEST

I

Test pin. Normally fixed to low.

69 SFDR O 1, 0 Sled drive output.

70 SRDR O 1, 0 Sled drive output.

71 TFDR

O 1, 0 Tracking drive output.

72 TRDR O 1, 0 Tracking drive output.

73 FFDR

O 1, 0 Focus drive output.

–5–

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