USB Interface

The SKA4 baseboard provides a dual external USB connector for the back panel of a server system. The connector is defined by the USB Specification, Revision 1.0. Both ports function identically with the same bandwidth. The SKA4 baseboard also provides a proprietary internal USB header.

Network Interface Controller (NIC)

The SKA4 baseboard supports a 10BASE-T/100BASE-TX network subsystem based on the

Intel®82559 Fast Ethernet Multifunction PCI/CARDBus controller. The Intel 82559 controller is a highly integrated PCI LAN controller in a 196-pin Ball Grid Array (BGA) supporting 10 or 100 Mbps fast Ethernet networks.

Supported network features include:

∙Glueless 32-bit PCI Bus Master Interface compatible with the PCI Local bus Specification

∙82596-like chained memory structure with improved dynamic transmit chaining for enhanced performance

∙Programmable transmit threshold for improved bus utilization

∙Early receive interrupt for concurrent processing of receive data

∙On-chip counters for network management

∙Auto-detect and auto-switching for 10 or 100 Mbps network speeds

∙Support for both 10 and 100 Mbps networks

∙Integrated physical interface to TX magnetics

∙The magnetics component terminates the 100BASE-TX connector interface and a flash device stores the network ID

Video

The SKA4 baseboard provides an ATI Rage IIc VGA Graphics Accelerator, along with video Synchronous Graphics RAM (SGRAM) and support circuitry for an embedded Super VGA (SVGA) video subsystem. The ATI Rage IIc chip contains an SVGA video controller, clock generator, BitBLT engine, and a RAM digital-to-analog Converter (RAMDAC) in a 208-pin PQFP. One 256K x 32 SGRAM chip provides 2 MB of 10-ns video memory. The baseboard does not support adding video memory to the system. The SVGA subsystem supports a variety of modes, up to 1600 x 1200 resolution, or up to 16.7 M colors.

The SVGA subsystem also supports analog VGA monitors, single- and multi-frequency, interlaced and non-interlaced, up to 100 Hz vertical retrace frequency. The SKA4 baseboard provides a standard 15-pin VGA connector and video blanking logic for server management console redirection support.

Depending on the environment, the controller displays up to 16.7 M colors in some video resolutions.

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SKA4 Baseboard Product Guide