Functional Description
CP605
Page 2 - 4
© 2004 Kontron Modular Computers GmbH
ID 25095, Rev. 07
2509
5.07.UG.VC.041005/14151
8
2.3
Chipset
The Intel 845GV chipset consists of the following devices:
• 82845GV Graphics and Memory Controller Hub (GMCH) with Accelerated Hub
Architecture (AHA) bus
• 82801 I/O Controller Hub 4 (ICH4) with AHA bus
• Firmware Hub (FWH)
The GMCH provides the processor interface for the Pentium 4 microprocessor, the memory
bus, the AGP 4x bus in the case of an external graphics controller, and includes a high perfor-
mance graphics accelerator. The ICH4 is a centralized controller for the boards' I/O peripher-
als, such as the PCI, USB 2.0, EIDE, LAN and AUDIO ports. The Firmware Hub (FWH)
provides the non-volatile storage of the BIOS.
2.3.1
Graphics and Memory Controller Hub (845GV)
The 845GV Graphics Memory Controller Hub (GMCH) is a highly integrated hub that provides
the CPU interface, the DDR SDRAM system memory interface, a hub link interface to the ICH4
and an AGP interface for an external VGA controller or high performance internal graphics.
Host Interface
The 845GV is optimized for the Intel Pentium 4 microprocessors. The chipset supports a Pro-
cessor Side Bus (PSB) frequency of 400 MHz and 533 MHz with AGTL+ signaling. Single end-
ed AGTL termination is supported for single processor configurations. It supports 32 bit host
addressing for decoding up to 4 GB memory address space.
Table 2-2: Memory Options Utilizing SODIMM Sockets
ONBOARD
SODIMM
TOTAL
512 MB *
--
512 MB
512 MB *
512 MB
1 GB
1 GB
--
1 GB
1 GB
1 GB
2 GB
Note ...
The memory options marked with a * are the standard product configuration.
It is recommended to use only DDR memory.
Note ...
When the CP605 is ordered for the extended temperature range E1 (-25 °C to +
75°C), SODIMM DDR SDRAM modules are not supported due to their being
unavailable for this temperature range.