DP84902 Datasheet PDF (1.7 Encoder/Decoder Circuit) | Download National Semiconductor DP84902

DP84902 - 1.7 Encoder/Decoder Circuit

Description

The DP84902 is designed to perform the encoding and decoding for disk memory systems It is designed to interface directly with Integrated Read Channel Products (such as National Semiconductor’s DP84910) and with Disk Data Controller Products with a 2-bit NRZ interface (such as National Semiconductor

Features

Y Y Y Y Y Y Y Y Y Y Y Operates at 2-bit Non-Return to Zero (NRZ) Data Rates up to 50 Mbits second Single a 5V Power Supply Operation Low Power Dissipation when TTL compatible code output is selected 150 mW at 50 Mbits second NRZ Rate TTL Compatible Inputs and Outputs ECL Compatible Code Outputs (patented) are control register selectable Two-bit NRZ Interface Supports Write Data Precompensation with Early and Late output signals Selectable use of either an Internal or External Write Clock P.

Datasheet Details

Part number	DP84902
Manufacturer	National Semiconductor
File Size	209.26 KB
Description	1.7 Encoder/Decoder Circuit
Datasheet	DP84902 Datasheet
Additional preview pages of the DP84902 datasheet.

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DP84902 1 7 Encoder Decoder Circuit June 1994 DP84902 1 7 Encoder Decoder Circuit General Description The DP84902 is designed to perform the encoding and decoding for disk memory systems It is designed to interface directly with Integrated Read Channel Products (such as National Semiconductor’s DP84910) and with Disk Data Controller Products with a 2-bit NRZ interface (such as National Semiconductor’s Advanced Disk Controllers) This Encoder Decoder (ENDEC) circuit employs a 2 3 (1 7) Run Length Limited (RLL) code type and supports the hard sectored format The DP84902 has the option of selecting either TTL or ECL compatible code output to interface with preamplifiers commonly used in high data rate applications This is accommplished by the setting of a bit in the control register The ENDE

Published: Jan 7, 2006 |