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AN-764 Datasheet A Floppy Disk Controller

Manufacturer: Motorola Semiconductor (now NXP Semiconductors)

Overview: AN-764 Application Note A FLOPPY DISK CONTROLLER USING THE MC6852 SSDA AND OTHER M6800 MICROPROCESSOR FAMILY PARTS Prepared by: Larry A. Parker Semiconductor Systems Engineering This application note describes a floppy disk controller based on the M6800 family of parts. It uses the Synchronous Serial Data Adapter (SSDA) as the primary data interface with the MPU and does not require DMA for transfer of data to and from memory. A Peripheral Interface Adapter (PIA) controls all non-date related operations in the controller (including seek, drive selection, etc.). MOTOROLA SelJ'Jiconducf:or Producf:s Inc. ©MOTOROLA INC., 1976 A FLOPPY DISK CONTROLLER USING THE MC6852 SSDA AND OTHER M6800 MICROPROCESSOR FAMILY PARTS INTRODUCTION With the introduction of the MC6852 SSDA, the task of interfacing synchronous serial peripherals such as floppy disks, tape cassettes or cartridges, and bi-sync or HDLC data channels, has been reduced significantly. Described in this application note is an efficient and flexible floppy disk controller design.

Key Features

  • of this design include:.
  • Controller operates one to four daisy-chained drives.
  • Four drive radial configuration possible with addi- tional multiplexing.
  • Flexible drive interfacing.
  • MPU controls data transfer allowing:.
  • Store only desired data from a sector into memory.
  • Search disk for pattern match without transferring data into memory until pattern is found.
  • Read or write entire track in one revolution; consecutive tracks on consecut.

More Datasheets from Motorola Semiconductor (now NXP Semiconductors)

Part Number Description

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