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 adding35TOFFITracking off control signal input pin from DSP. Off when TOFF = H.
1FIN2Iwith the FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal.36TESOPin from which TES signal is output to DSP.
2FIN1IPin to which external pickup photo diode is connected.?High Frequency Level? is used to judge whether the main beam position is on top of
Pin to which external pickup photo diode is connected. TE signal is created by37HFLObit or on top of mirror.
3EIsubtracting from the F pin signal.38SLOFISled servo off control input pin.
4FIPin to which external pickup photo diode is connected.39, 40CV�, CV+ICLV error signal input pin from DSP.
5TBIDC component of the TE signal is input.41RFSMORF output pin.
6TE-IPin to which external resistor setting the TE signal gain is connected between the TE42RFS-IRF gain setting and EFM signal 3T compensation constant setting pin together with
pin.RFSM pin.
7TEOTE signal output pin.43SLCO?Slice Level Control? is the output pin which controls the RF signal data slice level by
8TESIITES ?Track Error Sense? comparator input pin. TE signal is passed through a band-DSP.
pass filter then input.44SLIIInput pin which control the data slice level by the DSP.
9SCIIShock detection signal input pin.45DGND?Digital system GND.
10THITracking gain time constant setting pin.46FSCOOutput pin to which external focus search smoothing capacitor is connected.
11TAOTA amplifier output pin.47TBCI?Tracking Balance Control? EF balance variable range setting pin.
Pin to which external tracking phase compensation constants are connected between48NC?No connection.
12TD-Ithe 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.
17FD-IPin to which external focusing phase compensation constants are connected between54DRFO?Detect RF? RF level detector output.
the FD and FA pins.55FSSI?Focus Search Select? focus search mode (? search/+ search) select pin.
18FAIPin to which external focusing phase compensation constants are connected between56VCC2?Servo system and digital system Vcc pin.
the FD� and FA� pins.57REFI?Pin to which external bypass capacitor for reference voltage is connected.
19FA-IPin to which external focusing phase compensation constants are connected between58VROReference voltage output pin.
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.
22AGND?Analog signal GND.62LDDOAPC circuit output pin.
23SPOSignal ended output of the CV+and CV- pin input signal.63LDSIAPC circuit input pin.
24IISpindle amp input.
25SPGIPin to which external spindle gain setting resistor in 12 cm mode is connected.64VCC1?RF system Vcc pin.
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.
3132 |
ACEC
AIWA
