Q101 : CXD1881R
Pin Description
Power Supply Pins
Name | Type |
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VPA | — |
| Power supply pin for the RF block and serial port |
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VPB | — |
| Power supply pin for the servo block |
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VNA | — |
| Ground pin for the RF block and serial port |
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VNB | — |
| Ground pin for the servo block |
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V33 | — |
| Power supply pin for the output buffers |
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V25 | — |
| Reference power supply for the servo output |
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Input Pins |
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DVDRFP, DVDRFN |
| I | RF SIGNAL INPUTS: Differential RF signal attenuator input pins. |
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RFSIN |
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| I | RF SIGNAL INPUT: |
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AIP, AIN |
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| I | AGC AMPLIFIER INPUTS: Differential AGC amplifier input pins. |
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DIP, DIN |
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| I | ANALOG INPUTS FOR RF SINGLE BUFFER: Differential analog inputs to the RF |
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| and full wave rectifier. |
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A, B, C, D |
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| I | PHOTO DETECTOR INTERFACE INPUTS: Inputs from the main beam photo detector matrix outputs. |
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A2, B2, C2, D2 |
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| I | PHOTO DETECTOR INTERFACE INPUTS: AC coupled inputs for the DPD from the main beam photo |
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| detector matrix outputs. |
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CD_A, B, C, D |
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| I | CD PHOTO DETECTOR INTERFACE INPUTS: CD_A, B, C, D come from the CD main beam photo detector |
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| matrix outputs. |
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CD_E, F |
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| I | CD PHOTO DETECTOR INTERFACE INPUTS: CD side beam photo dector outputs and used for the CD |
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| tracking detection. |
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MIN |
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| I | RF SIGNAL INPUT FOR MIRROR: AC coupled inputs for the mirror dection circuit from MEVO. |
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DVDPD |
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| I | APC INPUT: DVD APC input pin from the monitor photo diode. |
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CDPD |
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| I | APC INPUT: CD APC input pin from the monitor photo diode. |
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LDON |
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| I | APC OUTPUT ON/OFF: APC output control pin. A high level activates LD output. (open low) |
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LINK |
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| I | LINKING SIGNAL INPUT PIN: In the linking area, this pin goes high and the Mirror and TE outputs are |
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| disabled, when the link signal is enabled. (open low) |
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Output Pins |
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Name |
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ATOP, ATON |
| O | DIFFERENTIAL ATTENUATOR OUTPUTS: Attenuator outputs. |
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FNP, FNN |
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| O | DIFFERENTIAL NORMAL OUTPUTS: Filter normal outputs. |
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RFAC |
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RFDC |
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| O | RF SIGNAL OUTPUT: |
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FE |
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| O | FOCUSING ERROR SIGNAL OUTPUT: Focus error output reference to V125. |
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TE |
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| O | TRACKING ERROR SIGNAL OUTPUT: Tracking error output reference to V125. |
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CE |
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| O | CENTER ERROR SIGNAL OUTPUT: Center error output reference to V125. |
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MEVO |
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| O | RFDDC BOTTOM ENVELOPE OUTPUT: Bottom envelope, PI or bottom clamped RF envelope signal output for |
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| mirror detection. |
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DFT |
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| O | DEFECT OUTPUT: CMOS output (V33 or VPB). When the PI signal level is below the detection level or when |
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| the RF signal level is below the detection level, the DFT output goes high. This output is selected by serial port. |
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MIRR |
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| O | MIRROR DETECT OUTPUT: Mirror detect comparator output. CMOS output (V33 or VPB). |
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PI |
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DVDLD |
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| O | APC OUTPUT: DVD APC output pin to control the laser power. |
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CDLD |
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| O | APC OUTPUT: CD APC output pin to control the laser power. |
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MNTR |
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| O | MONITOR OUTPUT: Monitor output signal is selected by PIOR |
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Serial Port Pins |
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Name |
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SDEN |
| I | SERIAL DATA ENABLE: Serial enable CMOS input. A high level input enables the serial port. (not to be left open) |
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SDATA |
| I/O | SERIAL DATA: Serial data bidirectional CMOS pin(V33 or VPA). NRZ programming data for the internal registers is |
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| applied to this input. (not to be left open) |
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SCLK |
| I | SERIAL CLOCK: Serial clock CMOS input. The clock applied to this pin is synchronized with the data applied to SDATA. |
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| (not to be left open) |
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