FW82439TX

PRELIMINARY m o .c U 4 t e n e n h S a at n n .D n w w w Intel Extended Temperature 430TX PCISET: 82439TX System Controller (MTXC) Datasheet n Fully Synchronous, Minimum Latency 30/33-MHz PCI Bus Interface  Five PCI Bus Masters (including PIIX4)  10 DWord PCI-to-DRAM Read Prefetch Buffer  18 DWord PCI-DRAM Post Buffer  Multi-Transaction Timer to Support Multiple Short PCI Transactions Power Management Features  PCI CLKRUN# Support  Dynamic Stop Clock Support  Suspend to RAM (STR)  Suspend to Disk (STD)  Power On Suspend (POS)  Internal Clock Control  SDRAM and EDO Self Refresh During Suspend  ACPI Support  Compatible SMRAM (C_SMRAM) and Extended SMRAM (E_SMRAM)  SMM Writeback Cacheable in E_SMRAM Mode up to 1 MB  3.3/5V DRAM, 3.3/5V PCI 3.3/5V Tag and 3.3/2.5 SRAM Support Test Features  NAND Tree Support for all Pins Supports the Universal Serial Bus (USB) n The Intel 430TX PCIset (430TX) consists of the 82439TX System Controller (MTXC) and the 82371AB PCI ISA IDE Xcelerator (PIIX4). The 430TX supports both mobile and desktop architectures. The 430TX forms a Host-to-PCI bridge and provides the second level cache control and a full function 64-bit data path to main memory. The MTXC integrates the cache and main memory DRAM control functions and provides bus control to transfers between the CPU, cache, main memory, and the PCI Bus. The second level (L2) cache controller supports a writeback cache policy for cache sizes of 256 Kbytes and 512 Kbytes. Cacheless...