1-8 Technical Information
Table 1-2 System Board Feature Components
Chip
Function
Pentium II Chip (mounted on CPU
module)
233-MHz Pentium II processor with MMX
266-MHz Pentium II processor with MMX
300-MHz Pentium II processor with MMX
Intel NX440LX Chipset:
82443LX PCI/AGP controller
(PAC)
Provides bus control signals, address paths,
and data paths for transfers between the
processor’s host bus, PCI bus, AGP
connector, and system memory; the PAC
comes in a 492-pin BGA package on the
system board and features processor
interface control (32-bit addressing and 66-
MHz host bus speed), an integrated DRAM
controller (synchronous DRAM, 64/72-bit
path-to-memory, auto detection of memory
type) and an AGP interface (compliant with
AGP specification with data transfer rates up
to 133 MHz), fully synchronous minimum
latency PCI bus interface (compliant with
PCI specification with PCI-to-DRAM access
greater than 100 MB per second).
82371AB PCI ISA IDE Xcelerator
(PIIX4)
Functions as a PCI to ISA bridge; PCI IDE
functionality; a USB controller; integrated dual
channel enhanced IDE interface with support
for Ultra DMA/33; enhanced DMA controller;
interrupt controller based on 82C59, with
support for 15 interrupts; power management
logic (sleep/resume and remote wake on
LAN); real-time clock with 256 byte, battery-
backed CMOS static RAM (SRAM); 16-bit
counters based on 82C54.
82557 LAN controller
The Intel 82557 LAN controller chip provides
the following features:
•
CSMA/CD protocol engine
•
PCI compatibility
•
DMA engine for movement of command,
status, and network data across the PCI
bus
•
Standard MII interface for access to IEEE
802.3-compliant physical layer interface.
