MVME6100-PMCSPAN-MV6100COMI MVME705B

VMEbus 2eSST Performance
The MVME6100 series is the first VMEbus single-board computer (SBC) designed with the Tundra Tsi148™ VMEbus
interface chip offering 2eSST VMEbus performance. The 2eSST (two edge source synchronous transfer) protocol
causes the VMEbus to run at a practical bandwidth of 320MB/s in most cases. The 2eSST protocol has existed for
some time (the draft standard for trial use was published in 1999 and released as an ANSI standard in 2003), but
until now, 2eSST boards would not work in a standard VMEbus backplane because the existing VMEbus transceivers
could not support the required VMEbus 2eSST signaling speeds. Texas Instruments has developed new VMEbus
transceivers that support the VMEbus signal switching speeds required by the 2eSST protocol. The combination of
the new Texas Instruments VMEbus transceivers and the Tsi148 VMEbus legacy protocol support allows customers
to integrate the MVME6100 series into their existing infrastructure providing backward compatibility and thereby
preserving their investment in existing VMEbus boards, backplanes, chassis and software.
Balanced Performance
The MVME6100 series provides more than just faster VMEbus transfer rates; it provides balanced performance from
the processor, memory subsystem, local buses and I/O subsystems. The processor running at speeds of 1.267 GHz is
ideal for data-intensive applications. The state-of-the-art host bridge, with support for a 133 MHz host bus and a 133
MHz DDR memory bus, is well matched to the processor. To ensure that the MVME6100 series can handle the
320MB/s data rates of 2eSST, the Tsi148 VMEbus interface chip is connected to one of the 133 MHz PCI-X buses on
the host bridge. The second PCI-X bus has dual PMC-X sites—each site supports PMC or PMC-X cards supporting
PCI bus speeds from 33 to 100 MHz. The MVME6100 also offers dual Gigabit Ethernet interfaces. All of this adds up
to a set of well-balanced, high-performance subsystems for unparalleled performance.