User guide

PH440 NLX Motherboard User Guide September 1998
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 8 OF 51
1 OVERVIEW
PH440 NLX is a Pentium II
®
processor-based NLX profile motherboard.
The design of PH440 NLX is based around the following components.
♦
Intel Pentium II
®
processor in Slot 1.
♦
Intel 440BX host bridge and system controller.
♦
Intel PIIX4e ISA bridge and peripheral and power management controller.
♦
SMSC 37C677 I/O Combo.
♦
ATI AGP 3D Rage Pro AGP or 3D Rage IIC AGP video controller with SGRAM frame
buffer.
♦
ESS Solo 1 audio controller.
Pentium II
®
Processor
The Pentium
®
II processor adds MMX technology to the P6 micro-architecture in a cartridge
package which also includes a second-level cache. The cartridge plugs into a 242-pin slot
connector (slot 1) on the motherboard and operates at speeds from 233MHz.
440BX North bridge
The 440BX North bridge connects the processor to the SDRAM main memory, an AGP port and
PCI bus interface. The device is housed in a 492-pin BGA package.
PIIX4e ISA bridge
The PIIX4e provides the PCI to ISA bus bridge and contains the system’s RTC, the IDE
interfaces, the DMA and Interrupt Controllers. The PIIX4e also provides ACPI support, an
SMbus controller and all the general purpose I/O ports used on the PH440 NLX motherboard.
The PIIX4e device is packaged in a 324 pin BGA.