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FW82439TX Datasheet

  • FW82439TX

  • Controller Miscellaneous - Datasheet Reference

  • 754.00KB

  • 102頁(yè)

  • ETC

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PRELIMINARY
Intel Extended Temperature 430TX PCISET:
82439TX System Controller (MTXC)
Datasheet
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Supports Mobile and Desktop
廬
Supports the Pentium Processor
Family Host Bus at 66 MHz and 60 MHz
at 3.3V and 2.5V
PCI 2.1 Compliant
Integrated Data Path
Integrated DRAM Controller
錚?/div>
4 Mbytes to 256 MBytes main
memory
錚?/div>
64-Mbit DRAM/SDRAM Technology
Support
錚?/div>
FPM (Fast Page Mode), EDO and
SDRAM DRAM Support
錚?/div>
6 RAS Lines Available
錚?/div>
Integrated Programmable Strength
for DRAM Interface
錚?/div>
CAS-Before-RAS Refresh, Extended
Refresh and Self Refresh for EDO
錚?/div>
CAS-Before-RAS and Self Refresh
for SDRAM
Integrated L2 Cache Controller
錚?/div>
64-MB DRAM Cacheability
錚?/div>
Direct Mapped Organization鈥擶rite
Back Only
錚?/div>
Supports 256K and 512K Pipelined
Burst SRAM and DRAM Cache
SRAM
錚?/div>
Cache Hit Read/Write Cycle Timings
at 3-1-1-1
錚?/div>
Back-to-Back Read/Write Cycles at
3-1-1-1-1-1-1-1
錚?/div>
64K x 32 SRAM also supported
n
Fully Synchronous, Minimum Latency
30/33-MHz PCI Bus Interface
錚?/div>
Five PCI Bus Masters (including
PIIX4)
錚?/div>
10 DWord PCI-to-DRAM Read
Prefetch Buffer
錚?/div>
18 DWord PCI-DRAM Post Buffer
錚?/div>
Multi-Transaction Timer to Support
Multiple Short PCI Transactions
Power Management Features
錚?/div>
PCI CLKRUN# Support
錚?/div>
Dynamic Stop Clock Support
錚?/div>
Suspend to RAM (STR)
錚?/div>
Suspend to Disk (STD)
錚?/div>
Power On Suspend (POS)
錚?/div>
Internal Clock Control
錚?/div>
SDRAM and EDO Self Refresh
During Suspend
錚?/div>
ACPI Support
錚?/div>
Compatible SMRAM (C_SMRAM)
and Extended SMRAM (E_SMRAM)
錚?/div>
SMM Writeback Cacheable in
E_SMRAM Mode up to 1 MB
錚?/div>
3.3/5V DRAM, 3.3/5V PCI 3.3/5V Tag
and 3.3/2.5 SRAM Support
Test Features
錚?/div>
NAND Tree Support for all Pins
Supports the Universal Serial Bus
(USB)
324-Pin MBGA 430TX PCIset Xcelerated
Controller (MTXC) with integrated Data
Paths
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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
designs are also supported. The cache memory can be implemented with pipelined burst SRAMs or DRAM
cache SRAMs. An external Tag RAM is used for the address tag and an internal Tag RAM for the cache line
status bits. For the MTXC DRAM controller, six rows are supported for up to 256 Mbytes of main memory.
The MTXC is highly integrated by including the Data Path into the same BGA chip. Using the snoop ahead
feature, the MTXC allows PCI masters to achieve full PCI bandwidth. For increased system performance, the
MTXC integrates posted write and read prefetch buffers. The 430TX integrates many Power Management
features that enable the system to save power when the system resources become idle.
Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is
granted by this document or by the sale of Intel products. Except as provided in Intel鈥檚 Terms and Conditions of Sale for such products, Intel assumes no liability
whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a
particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life
saving, or life sustaining applications. Intel retains the right to make changes to specifications and product descriptions at any time, without notice. The Intel 430TX
PCIset may contain design defects or errors known as errata. Current characterized errata are available on request. Third-party brands and names are the property of
their respective owners.
漏 INTEL CORPORATION 1999
February 1999
Order Number: 273234-001

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