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opti :: brochures :: ISA VL Chipset Brochure 1993 PDF

2 Pages·1993·1 MB·English
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Preview opti :: brochures :: ISA VL Chipset Brochure 1993

• • • • • • .................................... 486IPentium™ Write Back .................................... . The OPTi design team is Features/Benefits proud to present the 32-bit • 100% PC/AT compatible 486/Pentium AT solution • Fully supports the Intel 486 and with VESA Local bus. As Pentium microprocessor always, the product • Three chip PC/AT solution: 82C571, 82C572 and 82C206 emphasis is on value. The OPTi • IX clock source, supporting systems 82C571/572 chipset is crafted to provide running up to 66 MHz the highest performance but most cost • Write Back, direct-mapped cache with effective system solution without size selections: 64K, 128K, 256K, compromising quality, compatibility or 512K,1Mb reliability. • Programmable cache write policy: write-back or write through • Fully programmable cache and DRAM The 82C571/572 is a top-of-the-line read/write cycles solution for the server/power user market. • Supports 3-2-2-2 cache burst read Flexibility of design without using the most cycle at 66 MHz expensive support parts has been given • Built-in TAG auto-invalidation circuitry • Support for two programmable non key importance. This ensures the total cacheable/system memory "hole" system cost to be at the high-end 486 regions level -and with upgradability to the high • Supports two banks of 64-bit wide DRAMs with 256K, 512K, 1M , 2M, 4M, end Pentium performance. and 8M x 36 page-mode DRAMs • Supports DRAM configurations up to The 82C571/572 has a state-of-the-art 128 Mb cache controller for up to 2 MB of Write • Supports DRAM burst cycles back cache support. The DRAM controller • DRAM post write buffer also supports posted writes for faster • Provides Flash ROM support • 33 MHz asynchronous 32-bit VESA VL performance on write cycles. Local Bus support • Performance oriented snoop-line The OPTi 82C571/572 provides 486 PC comparator for VUISA bus masters power users the horsepower of the 64-bit • Extended DMA page register Pentium at 60 MHz and 66 MHz as • Asynchronous CPU and VL bus interface needed in the future. • AT bus clock speed programmability • Low power, high speed CMOS technology OPTi The OPTi 82C571/572 chipset provides a secondary cache memory and the 32-bit DRAM bus. highly integrated solution for fully It also controls the data flow between the CPU bus, compatible, high performance PC/AT the DRAM bus, the Local bus, and the 16/8-bit ISA platforms. Together with the 82C206 integrated bus. peripherals controller, this chipset supports the Intel Pentium processor in the most cost effective and The 82C572 ATC integrates the AT bus interface feature-rich designs available today. and the data buffers for transfers between the CPU data bus, Local data bus and the DRAM data bus. It The OPTi 82C571/572 chipset is comprised of the also provides ISA to Local bus command 82C571 and the 82C572 controllers. The 82C571 translation. SYSC provides the control functions for the host OPTi CPU interface, the 33 MHz asynchronous 32-bit 82C571/572: Local bus interface, burst read and write to The solution for your high performance 486/Penlium" Cache needs. 60-66 MHz 64K 101MB 64-bit CPU data bus AT 24·bit address bus • VESA 32·bit data bus AT 16·bit data bus • VESA Local Bus Peripherals AT Bus Peripherals • • Sales Offices, Representatives and Distributors California Florida Ohio France Singapore OPTi, Inc. EIR Lyons Corp Te kelec Airtronic WesTech Electronics Pte. (408) 980-8178 (407) 660-9600 (513) 278-0714 (1) 4623-2407 743-6355 Brooks Technical Group Iliinois,Wisc. (216) 659-9224 Hong Kong Fax: 746-1396 • (415) 960·3880 Micro-Tex Inc. (614) 895-1447 DYNAX Electronics Ltd. Taiwan Jones & McGeoy Sales (708) 765-3000 Oregon, WA,BC, CN 2-481-0223 OPTi (714) 724-8080 (414) 542-5352 Electronic Component Sales Fax: 2-481-0826 (2) 325-8520 E(6x1c9e)l 587-0545 JMaiyc hMigaarkne ting Assoc. ((250063)) 223425--92330412 ICtaolnys ystem SRI AFaSxE:(C 2 I)n 3te2r5n-a6t5io2n0a l Corp. • OPTi Alabama, MS, NC, SC, GA (313) 459·1200 Texas (039) 2-99-041977 (2) 505-7025 Concord Component Reps, C-3 Sales United Kingdom I(((n492c010.495 ))) 764771266---893859890370 ((SM63t11ian29nn)) ,C93 ll94Ao34t,h --M13ie45Or5 7 C66 o mpany (((275111432))) 733733938---501433103631 M(JF0aa3icpx)r: a o3n3 2S -35u82m-558m5-3i0t 14 33 M(0a6n28h)a t7ta5n8 5S1k yline • (314) 928-8078 Ausfralia Dia Semicon Systems, Inc. OPTi, Inc. AErxiczeol na, New Mexico New York, NJ, E.PA 2B-r5a6e4m-1a2c1 P1ty .,Ltd. F(0a3x): 334-33493-297-20700 1 2525 Walsh Avenue (602) 829-8820 S(5-J1 6A)S 5S3O6C-4ia2te4s2, Inc. Brazil Korea • Santa Clara, CA 95051, U.s.A. ECxocloelr ado, Utah ((760039)) 853636--21223334 U(1n1i)a o5 3D3i-g4i1ta2l1 F(0M2 ) K5o7r5e-a9 720 Tel: (408) 980-8178 (303)649-1800 Fax: (02) 575-9732 Fax: (408) 980-8860 • 24-hour Bulletin Board: (408) 980-9774 All products mentioned in this data sheet are registered trademarks of their respective owners. © OPTi, fnc. 1993

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