Electronics; Processor; Core Logic - Mitsubishi Electric Hurricane HU430 User Manual

2 Electronics

2.1 Processor

Processor support is for a dual voltage-plane socket 7, for the P54C, P55C and K6. Processor
bus speeds allowed are 60 or 66MHz, and all core multipliers can be set from the main jumper
block PL10. Depending on the processor fitted, the processor bus speed, core multiplier, and
core voltage will have to be correctly set.

2.2 Core Logic

This is the Intel 430TX Pentium PCI chipset which comprises the MTXC North Bridge and
the PIIX4E South Bridge, both in BGA packages:
Board Build
Rev A to D
Rev D
Rev A to D
MTXC North Bridge features


64-bit processor host interface, Pentium family at 60MHz and 66MHz


64-bit DRAM controller, 4MB to 256MB main memory, EDO or SDRAM


L2 cache controller, 256KB or 512KB direct-mapped write-back, caches first 64MB main
memory, PBSRAM or DRAM cache


Synchronous 30MHz/33MHz 32-bit PCI 2.1 bus controller


Data path and buffers, three sets of data buffers


Power management features
PIIX4E South Bridge features


PCI 2.1 interface at 30 & 33MHz


ISA bus controller


Extensive power management features including ACPI compliance


IDE controller, two ports four drives, PIO mode 4 and Ultra 33 synchronous DMA mode


Enhanced DMA controllers, with distributed DMA support


Interrupt controllers, with serial interrupt support


System timers


Dual USB 1.0 port controller, 1.5/12 Mbps


SMBus interface


MC146818A compatible real-time clock with 256 bytes of RAM
Part
MTXC
MTXC
PIIX4
Step Top Marking
A1 FW82439TX Q536ES (sample)
FW82439TX Q537ES (sample)
FW82439TX SL238 (prodn.)
A2 FW82439TX SL28T (prodn.)
B0 FW82371AB Q534ES (sample)
FW82371AB Q535ES (sample)
FW82371AB SL23P (prodn.)