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PowerPC-based VME64x board packs Ultra-160 SCSI, dual Gbit Ethernet

Posted: 12 Oct 2004 ?? ?Print Version ?Bookmark and Share

Keywords:concurrent technologies? vme64x? vp 742/20x? Motorola? mpc7455?

Industrial board vendor Concurrent Technologies is broadening its PowerPC-based VME64x product range with the introduction of a line of 6U-sized boards called the VP 742/20x series.

These single-slot boards are designed around Motorola MPC7455 PowerPC G4 microprocessors. As such, the VME bus boards offer processor speed options of 800MHz or 1GHz, as well as memory options of up to 1.25GB of 266MHz DDR SDRAM (with ECC error correction). All are fan-free.

Lots of I/O

A VP 742/20x also includes a lot of on-board I/O. Interfaces are available for a PMC site, Ultra-160 SCSI, dual Gigabit Ethernet, graphics, keyboard and a mouse. The graphics are implemented by an Asiliant Technologies 69030 chip, providing 4MB of video memory, and supporting screen resolutions up to 1,600 x 1,200-pixels with up to 16 million colors.

Targeting applications in military, aerospace, scientific and telecommunications industries, Concurrent also offers more hardened versions for harsher applications. Its 800MHz VP 742/201-E, for example, operates across the -25C to 70C range. Options are available for conformal coating too.

Moto's Altivec

As well as low power, the MPC7455 boards also use Motorola's 128bit so-called AltiVec technology, with 64KB of L1 (Level 1) cache and 256KB L2 cache. 2MB of backside L3 cache is also available.

Customers also get L1 cache locking. It enables specific key performance algorithms or code. An increased number of block address translation registers also enables embedded OSes to support high-speed mapping of additional large data blocks.

Marvell PCI bridging

The boards' MPC7455 microprocessors also connect to Marvell Discovery II (MV64360) PCI bridges. This silicon provides dual Gigabit Ethernet channels (they are independent of the PCI buses), two PCI buses and 2MB of NVSRAM. It also connects to 64MB of 32bit-wide applications flash.

A VP 742/20x also supports a 64bit 66MHz PMC site with front panel I/O (rear I/O is available via an optional P0 connector). Buyers also get a USB port, two asynchronous/synchronous RS-232/RS-422/RS-485 serial ports, and four 32bit general-purpose timers. There's also a 32bit CPU decrementer and a 64bit CPU timebase, as well as a realtime calendar/clock.

The system also uses a Tundra Universe II VME interface. An optional P2 or P2/P0 breakout is also available, as well as a JTAG diagnostic port.

Supports many OSes

A VP 742/20x will also support a range of OSes. At the moment, Concurrent Technologies supports VxWorks, Linux and LynxOS. Remote booting over the Ethernet is also possible.

- Alex Mendelsohn


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