Description 15
✏NOTE
Use DIMMs that have been tested for compatibility with the server board.
Contact your sales representative or dealer for a current list of approved
memory modules. Check the Intel Customer Support web site for the latest
tested memory list:
http://support.intel.com/support/motherboards/server/L440gx/compat.htm
440GX Host Bridge / Memory Controller
The ISP2150 is designed around the Intel® 82440GX AGPSet (440GX). This device provides
100 MHz processor host bus interface support, DRAM controller, PCI bus interface, AGP interface
(used on LB440GX for PCI-66/5V), and power management functions. The host bus/memory
interface in the 440GX is optimized for 100 MHz operation, using 100 MHz SDRAM main
memory. The PCI interface is PCI 2.1-compliant, providing a 33 MHz / 5V signaling environment
for embedded controllers and slots in the riser card. The 440GX memory controller supports up to
2 GB of ECC or Non-ECC memory, using PC/100 compliant Synchronous DRAM (SDRAM)
devices on DIMM plug-in modules. ECC can detect and correct single-bit errors, and detect
multiple-bit errors.
Peripherals

Super I/O Chip

The National† 87309 device supports two serial ports, one parallel port, diskette drive,
PS/2-compatible keyboard and mouse. The server board provides a connector interface for
each port.

Serial Ports

Each serial port can be set to one of four different COMx ports and can be enabled separately.
When enabled, each port can be programmed to generate edge or level sensitive interrupts. When
disabled, serial port interrupts are available to add-in boards.

Parallel Port

The 87309 provides one IEEE 1284-compatible 25 pin bi-directional EPP (supporting levels 1.7
and 1.9). BIOS programming of the 87309 registers enable the parallel port and determine the port
address and interrupt. ECP mode is supported with 2 possible DMA channels. When disabled, the
interrupt is available to add-in boards.