INS1771-1 - Floppy Disk Formatter/Controller

Datasheet Summary

Description

The INS1771-1 is a programmable floppy disk formatter/ controller chip contained in a standard 40'pin dual-in

line package.

The chip.

which is fabricated using N-channel silicon gate technology.

Features

Soft Sector Format Compatibility.
Automatic Track Seek with Verification.
Provisions for Miniature Floppy Disk Interface.
Read Mode Capabil ities Single/Multiple Record Read with Automatic Sector Search or Entire Track Read Selectable 128-8yte or Variable Record Length.
Write Mode Capabilities Single/Multiple Record Write with Automatic Sector Search Entire Track Write for Diskette Initialization.
Programmable Controls Selectable Track-to-T.

National Semiconductor

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Datasheet Details

Part number	INS1771-1
Manufacturer	National Semiconductor
File Size	1.50 MB
Description	Floppy Disk Formatter/Controller
Datasheet	INS1771-1 Datasheet
Additional preview pages of the INS1771-1 datasheet.

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~National ~ Semiconductor SEPTEMBER 1978 Pub. No. 426305468'()Ol INS1771-1 Floppy Disk Formatter/Controller General Description The INS1771-1 is a programmable floppy disk formatter/ controller chip contained in a standard 40'pin dual-in· line package. The chip. which is fabricated using N-channel silicon gate technology. interfaces a floppy disk drive directly to a computer interface bus. The I NS1771-1 provides soft sector formatting. which may be either IBM 3740 compatible or a user-selected sector format. The INS1771-1 is designed to operate on a multiplexed. TR I-STA TE® S-bit bidirectional bus with other busoriented devices. The c!1ip is programmed by the system software via the bus and all data. status information. and control words are transferred over the bus lines.

Published: Apr 12, 2024 |