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82C283

Opti
Part Number 82C283
Manufacturer Opti
Description 386SX System Controller
Published Nov 5, 2007
Detailed Description www.DataSheet4U.com OPTi ® 82C283 386SX System Controller 1.0 Features 2.0 Overview • Flexible DRAM banks config...
Datasheet PDF File 82C283 PDF File

82C283
82C283

Overview
www.
DataSheet4U.
com OPTi ® 82C283 386SX System Controller 1.
0 Features 2.
0 Overview • Flexible DRAM banks configuration - Supports 256K, 1M and 4M DRAM • Block interleave mode operations - Block interleaving at a block size of 512 bytes • BIOS shadow RAM - Shadow RAM for system, video and adapter BIOS • Memory remapping • Flexible multiplexed DRAM address • Programmable AT bus clock • Turbo switch • 160-pin PQFP (Plastic Quad Flat Pack) The 82C283 is a highly integrated, AT system logic VLSI chip for high-end 386SX/AT systems.
It integrates a local memory controller (local memory is on-board memory), AT bus controller, and data bus controller into one chip.
It is designed for systems running at 16MHz, 20MHz, 25MHz, and 33MHz*.
A high performance, compact 386SX/AT system is readily implemented with the 82C283 and a standard peripheral controller like OPTi’s 82C206 or the 82C100 (with Dallas Semiconductor (DS1287).
*Rev.
B only Figure 2-1 System Block Diagram A Bus D Bus DRAM...


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