Advantech user manual DRAM Interface Intel 855GME, PCI Interface, AIMB-250 Series

AIMB-250 Series

•Distributed arbitration for highly concurrent operation

•Three USB host controllers provide high performance peripherals with 480 Mbps of bandwidth, while enabling support for up to six USB 2.0 ports. This results in a significant increase over previous integrated 1-4 port hubs at 12 Mbps

•The latest AC ’97 implementation delivers 20-bit audio for enhanced sound quality and full surround sound capability. Integrated audio solutions continue to enjoy success as a very cost-effective, yet high-performance solution

•LAN Connect Interface (LCI) provides flexible network solutions such as 10/100 Mbps Ethernet and 10/100 Mbps Ethernet with LAN manageability

•Dual Ultra ATA/100 controllers, coupled with the Intel® Application Accelerator – a performance software package – support faster IDE transfers to storage devices

•Intel Application Accelerator software provides additional performance over native ATA drivers by improving I/O transfer rates and enabling faster O/S load time, resulting in accelerated boot times

•Communication and Network Riser (CNR) offers flexibility in system configuration with a baseline feature set that can be upgraded with an audio card, modem card, or network card

1.6.4DRAM Interface (Intel 855GME)

The 855GME GMCH system memory controller directly supports the following:

•One channel of PC1600/2100/2700 DDR SDRAM memory

•DDR SDRAM devices with densities of 128-Mb, 256-Mb, and 512-Mb technology

•Up to 1 GB (512-Mb technology) SDRAM

1.6.5DRAM Interface (Intel 855GME)

The 855GME GMCH system memory controller directly supports the following:

•One channel of PC1600/2100 DDR SDRAM memory

•DDR SDRAM devices with densities of 128-Mb, 256-Mb, and 512-Mb technology

•Variable page sizes of 2-kB, 4-kB, 8-kB, and 16-kB. Page size is individually selected for every row and a maximum of 16 pages may be opened simultaneously

1.6.6PCI Interface

The ICH4 PCI interface provides a 33 MHz, Rev. 2.2 compliant implementation. All PCI signals are 5V tolerant, except PME#. The ICH2 integrates a PCI arbiter that supports up to six external PCI bus masters in addition to the internal ICH4 requests.

20 AIMB-250 Series User’s Manual