82434NX

82434LX 82434NX PCI CACHE AND MEMORY CONTROLLER (PCMC) Y Supports the Pentium TM Processor at iCOMP TM Index 510T60 MHz and iCOMP Index 567T66 MHz Supports the Pentium Processor at iCOMP Index 735T90 MHz iCOMP Index 815T100 MHz and iCOMP Index 610T75 MHz Supports Pipelined Addressing Capability of the Pentium Processor The 82430NX Drives 3 3V Signal Levels on the CPU and Cache Interfaces High Performance CPU PCI Memory Interfaces via Posted Write and Read Prefetch Buffers Fully Synchronous PCI Interface with Full Bus Master Capability Supports the Pentium Processor Internal Cache in Either Write-Through or Write-Back Mode Programmable Attribute Map of DOS and BIOS Regions for System Flexibility Integrated Low Skew Clock Driver for Distributing Host Clock Integrated Second Level Cache Controller Integrated Cache Tag RAM Write-Through and Write-Back Cache Modes for the 82434LX Write-Back for the 82434NX 82434NX Supports Low-Power Cache Standby Direct Mapped Organization Supports Standard and Burst SRAMs 256-KByte and 512-KByte Sizes Cache Hit Cycle of 3-1-1-1 on Reads and Writes Using Burst SRAMs Cache Hit Cycle of 3-2-2-2 on Reads and 4-2-2-2 on Writes Using Standard SRAMs Y Y Y Y Y Y Integrated DRAM Controller Supports 2 MBytes to 192 MBytes of Cacheable Main Memory for the 82434LX Supports 2 MBytes to 512 MBytes of Cacheable Main Memory for the 82434NX Supports DRAM Access Times of 70 ns and 60 ns CPU Writes Posted to DRAM 4-1-1-1 Refresh Cycles Decoupled from ISA Re...