82077AA-5 datasheet, PDF - EEWORLD Datasheet

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82077AA-5: DescriptionCHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER; File Size485KB，62 Pages; ManufacturerIntel; Websitehttp://www.intel.com/

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82077AA-5 Overview

CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER

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82077AA

CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER

Single-Chip Floppy Disk Solution

100% PC AT Compatible

100% PS 2 Compatible

100% PS 2 Model 30 Compatible

Integrated Drive and Data Bus

Buffers

Integrated Analog Data Separator

250 Kbits sec

300 Kbits sec

500 Kbits sec

1 Mbits sec

High Speed Processor Interface

Perpendicular Recording Support

Integrated Tape Drive Support

12 mA Host Interface Drivers 40 mA

Disk Drivers

Four Fully Decoded Drive Select and

Motor Signals

Programmable Write Precompensation

Delays

Addresses 256 Tracks Directly

Supports Unlimited Tracks

16 Byte FIFO

68-Pin PLCC

(See Packaging Spec Order

240800 Package Type N)

The 82077AA floppy disk controller has completely integrated all of the logic required for floppy disk control

The 82077AA a 24 MHz crystal a resistor package and a device chip select implements a PC AT or PS 2

solution All programmable options default to compatible values The dual PLL data separator has better

performance than most board level discrete PLL implementations The FIFO allows better system perform-

ance in multi-master systems (e g PS 2 EISA) The 82077AA is available in three versions 82077AA-5

82077AA and 82077AA-1 82077AA-1 has all features listed in this data sheet It supports both tape drives and

4 Mb floppy drives The 82077AA supports 4 Mb floppy drives and is capable of operation at all data rates

through 1 Mbps The 82077AA-5 supports 500 300 250 Kbps data rates for high and low density floppy

drives

The 82077AA is fabricated with Intel’s CHMOS III technology and is available in a 68-lead PLCC (plastic)

package

290166– 1

Figure 1 82077AA Pinout

PS 2 and PC AT are trademarks of IBM

May 1994

Order Number 290166-007

82077AA-5 Related Products

	82077AA-5	82077AA	82077AA-1
Description	CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER	CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER	CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER

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