6-14. IC PIN FUNCTION DESCRIPTION
•BD BOARD IC101 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No. | Pin Name | I/O |
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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 | ||
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15 |
| TEMPR | O | Output terminal for a temperature sensor reference voltage | ||
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16 |
| SWDT | I | Writing serial data input from the CXD2656R (IC121) | ||
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17 |
| SCLK | I | Serial data transfer clock signal input from the CXD2656R (IC121) | ||
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18 |
| XLAT | I | Serial data latch pulse signal input from the CXD2656R (IC121) | ||
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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 | ||
| from the CXD2656R (IC121) |
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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 CXD2656R (IC121) | ||
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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 CXD2656R (IC121) | ||
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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 CXD2656R (IC121) | ||
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33 |
| AUX | O | Auxiliary signal (I3 signal/temperature signal) output to the CXD2656R (IC121) | ||
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34 |
| FE | O | Focus error signal output to the CXD2656R (IC121) | ||
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35 |
| ABCD | O | Light amount signal (ABCD) output to the CXD2656R (IC121) | ||
36 |
| BOTM | O | Light amount signal (RF/ABCD) bottom hold output to the CXD2656R (IC121) | ||
37 |
| PEAK | O | Light amount signal (RF/ABCD) peak hold output to the CXD2656R (IC121) | ||
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38 |
| RF | O | Playback EFM RF signal output to the CXD2656R (IC121) | ||
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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) | ||
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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