IC DESCRIPTION
IC, LA9241ML
Pin No.Pin NameI/ODescriptionPin No.Pin NameI/ODescription
Pin to which external pickup photo diode is connected. RF signal is created by adding36TESOPin from which TES signal is output to DSP.
1FIN2I
with the FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal.OHigh Frequency Level� is used to judge whether the main beam position is on top of
37HFLO
2FIN1IPin to which external pickup photo diode is connected.bit or on top of mirror.
Pin to which external pickup photo diode is connected. TE signal is created by38SLOFISled servo off control input pin.
3EI
subtracting from the F pin signal.39, 40CV�, CV+ICLV error signal input pin from DSP.
4FIPin to which external pickup photo diode is connected.41RFSMORF output pin.
5TBIDC component of the TE signal is input.RF gain setting and EFM signal 3T compensation constant setting pin together with
42RFS�I
6TE�IPin to which external resistor setting the TE signal gain is connected between the TE pin.RFSM pin.
7TEOTE signal output pin.OSlice Level Control� is the output pin which controls the RF signal data slice level by
43SLCO
TES OTrack Error Sense� comparator input pin. TE signal is passed through a band-DSP.
8TESII
pass filter then input.44SLIIInput pin which control the data slice level by the DSP.
9SCIIShock detection signal input pin.45DGNDNDigital system GND.
10THITracking gain time constant setting pin.46FSCOOutput pin to which external focus search smoothing capacitor is connected.
11TAOTA amplifier output pin.47TBCIOTracking Balance Control� EF balance variable range setting pin.
Pin to which external tracking phase compensation constants are connected between48NCNNo connection.
12TD�I
the TD and VR pins.49DEFODisc defect detector output pin.
13TDITracking phase compensation setting pin.50CLKIReference clock input pin. 4.23 MHz of the DSP is input.
14JPITracking jump signal (kick pulse) amplitude setting pin.51CLIMicroprocessor command clock input pin.
15TOOTracking control signal output pin.52DATIMicroprocessor command data input pin.
16FDOFocusing control signal output pin.53CEIMicroprocessor command chip enable input pin.
Pin to which external focusing phase compensation constants are connected between54DRFOODetect RF� RF level detector output.
17FD�I
the FD and FA pins.55FSSIOFocus Search Select� focus search mode (? search/+ search) select pin.
Pin to which external focusing phase compensation constants are connected between56VCC2NServo system and digital system Vcc pin.
18FAI
the FD� and FA� pins.57REFINPin to which external bypass capacitor for reference voltage is connected.
Pin to which external focusing phase compensation constants are connected between58VROReference voltage output pin.
19FA�I
the FA and FE pins.59LF2IDisc defect detector time constant setting pin.
20FEOFE signal output pin.60PH1IPin to which external capacitor for RF signal peak holding is connected.
21FE�IPin to which external FE signal gain setting resistor is connected between the FE pin.61BH1IPin to which external capacitor for RF signal bottom holding is connected.
22AGNDNAnalog signal GND.
62LDDOAPC circuit output pin.
23NCNNo connection.63LDSIAPC circuit input pin.
24SPOSingle ended output of the CV+ and CV� pin input signal.
64VCC1NRF system Vcc pin.
25SPGIPin to which external spindle gain setting resistor in 12 cm mode is connected.
Pin to which external spindle phase compensation constants are connected together
26SP�I
with SPD pin.
27SPDOSpindle control signal output pin.
28SLEQIPin to which external sled phase compensation constants are connected.
29SLDOSled control signal output pin.
30, 31SL�, SL+ISled advance signal input pin from microprocessor.
32, 33JP�, JP+ITracking jump signal input pin from DSP.
34TGLITracking gain control signal input from DSP. Low gain when TGL = H.
35TOFFITracking off control signal input pin from DSP. Off when TOFF = H.
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ACEC
