•SERVO BOARD IC302 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)
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1 |
| I | I | |||
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2 |
| J | I | |||
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3 |
| VC | O | Middle point voltage (+1.65V) generation output terminal | ||
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4 to 9 |
| A to F | I | Signal input from the optical | ||
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10 |
| PD | I | Light amount monitor input from the optical | ||
11 |
| APC | O | Laser amplifier output terminal to the automatic power control circuit | ||
12 | APCREF | I | Reference voltage input terminal for setting laser power | |||
13 |
| GND | — | Ground terminal |
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14 | TEMPI | I | Connected to the temperature sensor | Not used (open) | ||
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15 | TEMPR | O | Output terminal for a temperature sensor reference voltage Not used (open) | |||
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16 | SWDT | I | Writing serial data input from the MD mechanism controller (IC501) | |||
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17 |
| SCLK | I | Serial data transfer clock signal input from the MD mechanism controller (IC501) | ||
18 | XLAT | I | Serial data latch pulse signal input from the MD mechanism controller (IC501) | |||
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19 | XSTBY | I | Standby signal input terminal “L”: standby (fixed at “H” in this set) | |||
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20 | F0CNT | I | Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input | |||
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21 |
| VREF | O | Reference voltage output terminal | Not used (open) | |
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22 | EQADJ | I | Center frequency setting terminal for the internal circuit (EQ) | |||
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23 | 3TADJ | I | Center frequency setting terminal for the internal circuit (BPF3T) | |||
24 |
| VCC | — | Power supply terminal (+3.3V) |
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25 | WBLADJ | I | Center frequency setting terminal for the internal circuit (BPF22) | |||
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26 |
| TE | O | Tracking error signal output to the CXD2652AR (IC301) | ||
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27 | CSLED | I | Connected to the external capacitor for | |||
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28 |
| SE | O | Sled error signal output to the CXD2652AR (IC301) | ||
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29 | ADFM | O | FM signal output of the ADIP |
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30 |
| ADIN | I | Receives a ADIP FM signal in AC coupling | ||
31 | ADAGC | I | Connected to the external capacitor for ADIP AGC | |||
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32 | ADFG | O | ADIP duplex signal (22.05 kHz ± | 1 kHz) output to the CXD2652AR (IC301) | ||
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33 |
| AUX | O | Auxiliary signal (I3 signal/temperature signal) output terminal Not used (open) | ||
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34 |
| FE | O | Focus error signal output to the CXD2652AR (IC301) | ||
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35 | ABCD | O | Light amount signal (ABCD) output to the CXD2652AR (IC301) | |||
36 | BOTM | O | Light amount signal (RF/ABCD) bottom hold output to the CXD2652AR (IC301) | |||
37 | PEAK | O | Light amount signal (RF/ABCD) peak hold output to the CXD2652AR (IC301) | |||
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38 |
| RF | O | Playback EFM RF signal output to the CXD2652AR (IC301) | ||
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39 | RFAGC | I | Connected to the external capacitor for RF auto gain control circuit | |||
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40 |
| AGCI | I | Receives a RF signal in AC coupling | ||
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41 | COMPO | O | User comparator output terminal | Not used (open) | ||
42 | COMPP | I | User comparator input terminal | Not used (fixed at “L”) | ||
43 | ADDC | I | Connected to the external capacitor for cutting the low band of the ADIP amplifier | |||
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44 |
| OPO | O | User operational amplifier output terminal Not used (open) | ||
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45 |
| OPN | I | User operational amplifier inversion input terminal Not used (fixed at “L”) | ||
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46 |
| RFO | O | RF signal output terminal |
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47 | MORFI | I | Receives a MO RF signal in AC coupling | |||
48 | MORFO | O | MO RF signal output terminal |
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