Mobile Intel
®
945GM Express Chipset
Development Kit User’s Manual 33
Theory of Operation
3.4.3.5 VGA Connector
A standard 15 pin D-Sub connector on the rear panel provides access to the analog output of the
Intel
®
945GM Express Chipset. The integrated graphics supports a maximum resolution of 2048 x
1536 @ 75Hz. This can be connected to any capable analog CRT or flat panel display with analog
input.
When used in conjunction with the other display options, the displays can operate in Dual
Independent mode. This allows unique content to appear on each display at unique refresh rates
and timings.
3.4.3.6 Keyboard/Mouse
The keyboard and mouse connectors are PS/2 style, six-pin stacked miniature D-Sub connectors.
The top connector is for the mouse and the bottom connector is for the keyboard.
3.4.3.7 32 bit/33 MHz PCI Connectors
Two industry standard 32 bit/33 MHz PCI connectors are provided on the evaluation board. These
slots support 3.3 V and 5 V devices.
3.4.3.8 Ethernet Gigabit LAN Interface connector
The evaluation board provides one industry standard Gigabit RJ45 LAN Interface Connector
(Integrated with the dual USB connector).
3.4.3.9 LVDS Flat Panel Display Interface
The evaluation board provides one forty-four pin LVDS video interface connector. The provided
LVDS connects to most 18 bits per pixel (bpp) flat panel display assemblies. 24 bpp LVDS is not
supported.
3.4.4 POST Code Debugger
A port 80-83 display at CR6A1, CR6A2, CR6A3, and CR6A4 show the POST codes and can be
used for debug information during POST. The evaluation board uses an AMI* BIOS.
For AMI* BIOS POST codes, please visit: http://www.ami.com
3.5 Clock Generation
The Intel
®
945GM Express Chipset board uses a CK-410M and CK-SSCD compatible solution.
The FSB frequency is determined from decoding the processor BSEL[2:0] pin settings.
The clock generator provides Processor, GMCH, ICH7-M, PCI, PCI Express*, SATA, and USB
reference clocks. Clocking for DDR2 is provided by the GMCH.
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