CP6000
Functional Description
ID 27942, Rev. 05
© 2005 Kontron Modular Computers GmbH
Page 2 - 7
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2.05.UG.VC.051020/17275
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P R E L I M I N A R Y
2.1.4
Graphics and Memory Controller Hub (855GME)
The 855GME Graphics Memory Controller Hub (GMCH) is a highly integrated hub that pro-
vides the CPU interface (optimized for the Intel®
Pentium® M), the DDR SDRAM system mem-
ory interface (optimized for DDR200/PC1600, DDR266/PC2100 and DDR333/PC2700), a hub
link interface to the 6300ESB and high performance internal graphics.
Graphics and Memory Controller Hub Feature Set
Host Interface
The 855GME is optimized for the Intel®
Pentium®
M microprocessors. The chipset supports a
Processor Side Bus (PSB) frequency of 400 MHz using 1.05 V AGTL signalling. Single-ended
AGTL termination is supported for single processor configurations. The AGTL bus supports
32-bit host addressing for decoding up to 4 GB memory address space.
System Memory Interface
The 855GME integrates a system memory Dual Data Rate (DDR) SDRAM controller with a
72-bit wide interface including ECC bits. The chipset supports DDR200, DDR266 and DDR333
(PC1600, PC2100 and PC2700) DDR SDRAM for system memory. The best memory speed
for the CP6000 is DDR333 (PC2700).
855GME Graphics Controller
The 855GME includes a highly integrated graphics accelerator and H/W Motion Compensation
engines for software MPEG2 decoding delivering high performance 3D and 2D video capabil-
ities. The internal graphics controller provides an interface for a standard CRT display.
2.1.5
I/O Controller Hub 6300ESB
The 6300ESB is a highly integrated multifunctional I/O Controller Hub that provides the inter-
face to the PCI and PCI-X Bus, and integrates many of the functions needed in today's PC plat-
forms, such as Ultra DMA 100/66/33 controller, SATA 150, USB host controller supporting USB
2.0, LPC interface and FWH Flash BIOS interface controller. The 6300ESB communicates with
the host controller over a dedicated hub interface.
The I/O Controller Hub Feature set comprises:
• PCI 2.2 interface with 32-bit/33 MHz and eight IRQ inputs
• PCI-X 1.0 interface with 64-bit/66 MHz and four IRQ inputs
• Bus Master EIDE controller UltraDMA 100/66/33
• SATA 150 controller
• Two USB controllers with up to four USB 1.1 or USB 2.0 ports
• Hub interface for a 855GME chipset
• FWH interface
• LPC interface
• RTC controller
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