DESCRIPTION
L6363 is a 0.18µm CMOS PRML R/W channel supporting data rates up to 750Mb/sec with Servo Demodulation, Clock Synthesis, Channel Quality Monitor for channel optimization and Disk Surface Defect Scan capability

■ SIGNAL PROCESSING
   – PR4 signal equalization and loops
   – 8th order optimized low pass filter with programmable cut-off frequency and boost
   – single flash 6-bit ADC
   – 5-TAP programmable/self-adaptive digital FIR for signal equalization
   – Programmable/self-adaptive Offset and MR Head Asymmetry compensation for signal equalization
   – Timing and Gain loops for optimum data recovery
   – Encoder scheme:
   – Rate 304/338 with Local ECC (16/17 without Local ECC)
   – Detector scheme:
   – Media Noise TerminatorTM Detector
   – Optional Local ECC Post Processing scheme
   – 8-bit NRZ interface to disk controller
   – Thermal Asperity detection/compensation and Erasure Flag
■ WRITE
   – 2 level Write Precomp for Non Linear Transition Shift compensation
   – Asynchronous and Synchronous Direct Write for disk/head characterization
■ SERVO
   – Digital Synchronous Servo with data rates up to 75MHz (8x Ovsersampling)
   – Internal Burst and Grey Code detection
   – Repeatable Run Out Support
■ CHANNEL QUALITY MONITOR
   – Fast read parameters optimization for minimum BER
   – Advanced Disk Surface Defect Scan
■ QUALITY AND RELIABILITY
   – BIST for analog front-end and digital back-end
   – Iddq and I/O pins mapping
■ POWER SUPPLY AND CONTROL
   – 2.5V Analog and 1.8V Digital supply; 1.8V to 3.3V supply for I/O pins
   – Advanced Power Management features