Title :
Timing and data recovery circuit for high-speed optical storage drives
Author :
Luo, Y.-B. ; Chiueh, T.-D.
Author_Institution :
Ind. Technol. Res. Inst., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A new timing recovery circuit for high-speed optical storage drives is presented. The core of the timing recovery circuit is a mixed-signal-controlled oscillator (MSCO) which is controlled simultaneously by a digital signal and an analogue signal. With digital control, the MSCO can operate in a broad frequency range, with very high switching speed and flexibility. Within a small frequency step defined by a particular digital control word, an analogue control signal can then fine-tune the MSCO through a feedback loop. In addition, to accommodate the data-transition characteristics in the CD-ROM or DVD-ROM data, a new phase detector is proposed. The proposed IC also includes a frame synchronisation block and an eight-to-fourteen demodulation circuit for CD-ROM data recovery. The chip was fabricated in a 0.6-μm n-well SPTM CMOS process. The timing recovery circuit achieves an operating frequency range of 70-180 MHz and its acquisition time is much less than 1 μs while consuming only 85 mW from a 5 V power supply
Keywords :
CD-ROMs <high-speed opt. storage drives, timing and data recovery cct.>; CMOS integrated circuits <high-speed opt. storage drives, timing and data recovery cct.>; demodulation <high-speed opt. storage drives, timing and data recovery cct.>; digital control <high-speed opt. storage drives, timing and data recovery cct.>; digital versatile discs <high-speed opt. storage drives, timing and data recovery cct.>; disc drives <high-speed opt. storage drives, timing and data recovery cct.>; feedback oscillators <high-speed opt. storage drives, timing and data recovery cct.>; mixed analogue-digital integrated circuits <high-speed opt. storage drives, timing and data recovery cct.>; phase detectors <high-speed opt. storage drives, timing and data recovery cct.>; switching circuits <high-speed opt. storage drives, timing and data recovery cct.>; synchronisation <high-speed opt. storage drives, timing and data recovery cct.>; timing circuits <high-speed opt. storage drives, timing and data recovery cct.>; 5 V; 70 to 180 MHz; 85 mW; CD-ROM; DVD-ROM; SPTM CMOS process; analogue control signal; broad frequency range; data recovery circuit; demodulation circuit; digital control; feedback loop; frame synchronisation block; high switching flexibility; high switching speed; high-speed optical storage drives; mixed-signal-controlled oscillator; phase detector; timing recovery circuit;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings -
DOI :
10.1049/ip-cds:20030220
