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SERVO BLOCK MEGACELL
FEATURES
- Asynchronous clocking (i.e. no phase or frequency lock to servo data), separate frequency synthesizer.
- Oversampling rates up to 22x.
- Raw data serial interface (SDATA, SPOL), to accommodate different HDD ASIC architectures.
- 8 bit NRZ Data Interface for Index/Gray and Bursts transmision assures minimum HDD ASIC logic.
- Programmable 4, 5 or 6 Bursts accumulation.
- Programmable AM detection logic (up to 4 transitions within the AM window, including no transition).
- Pogrammable Index/Gray data field order.
- Programmable Index/Gray code data pattern and bit length.
- Programmable Index/Gray code symbol decoding.
- Programmable error correction/detection on Index and Gray code data.
- Automatic binary decode of Gray coded data.
- Programmable linear/non-linear modes for AGC block.
- Programmable Preamble Detect modes depending on the search state the drive is in.
- 8 bit TestBus for easy and full testability.
SYSTEM OVERVIEW
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