IC DESCRIPTION
IC, LA9241ML
Pin No. | Pin Name | I/O | Description | |
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1 | FIN2 | I | Pin to which external pickup photo diode is connected. RF signal is created by adding | |
with the FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal. | ||||
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2 | FIN1 | I | Pin to which external pickup photo diode is connected. | |
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3 | E | I | Pin to which external pickup photo diode is connected. TE signal is created by | |
subtracting from the F pin signal. | ||||
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4 | F | I | Pin to which external pickup photo diode is connected. | |
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5 | TB | I | DC component of the TE signal is input. | |
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6 | TE- | I | Pin to which external resistor setting the TE signal gain is connected between the TE | |
pin. | ||||
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7 | TE | O | TE signal output pin. | |
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8 | TESI | I | TES “Track Error Sense” comparator input pin. TE signal is passed through a band- | |
pass filter then input. | ||||
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9 | SCI | I | Shock detection signal input pin. | |
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10 | TH | I | Tracking gain time constant setting pin. | |
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11 | TA | O | TA amplifier output pin. | |
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12 | TD- | I | Pin to which external tracking phase compensation constants are connected between | |
the TD and VR pins. | ||||
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13 | TD | I | Tracking phase compensation setting pin. | |
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14 | JP | I | Tracking jump signal (kick pulse) amplitude setting pin. | |
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15 | TO | O | Tracking control signal output pin. | |
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16 | FD | O | Focusing control signal output pin. | |
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17 | FD- | I | Pin to which external focusing phase compensation constants are connected between | |
the FD and FA pins. | ||||
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18 | FA | I | Pin to which external focusing phase compensation constants are connected between | |
the FD– and FA– pins. | ||||
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19 | FA- | I | Pin to which external focusing phase compensation constants are connected between | |
the FA and FE pins. | ||||
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20 | FE | O | FE signal output pin. | |
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21 | FE- | I | Pin to which external FE signal gain setting resistor is connected between the FE pin. | |
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22 | AGND | — | Analog signal GND. | |
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23 | SP | O | Signal ended output of the CV+and CV- pin input signal. | |
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24 | SPI | I | Spndle amp input. | |
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25 | SPG | I | Pin to which external spindle gain setting resistor in 12 cm mode is connected. | |
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26 | SP- | I | Pin to which external spindle phase compensation constants are connected together | |
with SPD pin. | ||||
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27 | SPD | O | Spindle control signal output pin. | |
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28 | SLEQ | I | Pin to which external sled phase compensation constants are connected. | |
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29 | SLD | O | Sled control signal output pin. | |
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30, 31 | I | Sled advance signal input pin from microprocessor. | ||
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32, 33 | I | Tracking jump signal input pin from DSP. | ||
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34 | TGL | I | Tracking gain control signal input from DSP. Low gain when TGL = H. | |
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35 | TOFF | I | Tracking off control signal input pin from DSP. Off when TOFF = H. | |
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