Aiwa XR-EM70 Service Manual download pdf (Page 30)

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Pin No.

38 SLOF I Sled servo off control input.

39 CV

I CLV error signal input from the DSP.

40 CV+

41 RFSM O RF output.

42 RFS O Sets the RF gain and the EFM signal's 3T compensation constant together with the RFSM pin.

43 SLC O

The SLC (slice level control) signal is output to control the DSP's data slice level of the RF

waveform.

44 SLI I Input to control the DSP's data slice level.

45 D-GND  Ground of digital signals.

46 FSC O Output for the focus search smoothing capacitor.

47 TBC I The TBC (tracking balance control) signal sets the EF balance variation range.

48 NC  Not connected.

49 DEF O Disc defect detection output.

50 CLK I Reference clock input. 4.23MHz is input from the DSP.

51 CL I Microprocessor command clock input.

52 DAT I Microprocessor command data input.

53 CE I Microprocessor chip enable input.

54 DRF O DRF (detect RF) is an output to detect the RF level.

55 FSS I

The FSS (focus search select) signal switches the focus search modes (+/-search / +search with

respect to the reference voltage). (Not used)

56 VCC2  VCC of servo and digital circuits.

57 REFI  For the connection of bypass capacitor for the reference voltage.

58 VR O Reference voltage output.

59 LF2  Sets the time constant for disc defect detection.

60 PH1  For the connection of a capacitor to hold the RF signal peak.

61 BH1  For the connection of a capacitor to hold the RF signal bottom.

62 LDD O APC circuit output.

63 LDS I APC circuit input.

64 VCC1  VCC of RF signal circuits.

I/O DescriptionPin Name

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Aiwa XR-EM70 Service Manual Page 30