VL82C033 Floppy Controller

The VL82C033/OTi-033 is the Floppy Disk Controller and Data Separator device in the three chip VLSI/OTi PS/2 Model 30-Compatible chip set. The other two devices are the VL82C031/OTi-031 System Controller and the VL82C032/OTi-032 I/O Controller.

The VL82C033/OTi-033 provides the PS/2 Model 30-Compatible system with a uPD 756A- compatible floppy disk controller function, a precision analog data separator, an internal phase comparator, the required filters, as well as a voltage controlled oscillator (VCO). The VL82C033/OTi-033 provides the system with three floppy disk rates: 250K bits-per-second, 300K bits-per-second, and 500K bits-per- second. the VL82C033/OTi-033 is available form both VLSI Technology, Inc. and Oak Technology, Inc. in an industry-standard plastic 48 pin DIP.

• Provides a uPD765A-compatible floppy disk controller
• contains a precision analog data separator
• Integrates an internal phase comparator, and voltage controlled oscillator (VCO)
• Provides the system with three data rates:
  • 250K bit-per-second
  • 300K bit-per-second
  • 500K bit-per-second