MD-CPU330 Thales Real-Time Processor

The Kontron / Thales / Cetia Mx-CPU330 Series Real-Time Processors are Designed for stand-alone or distributed real-time applications. The CPU330 is a fast, flexible, and economical real-time processor. The high-speed MC68030 processor operates at 25 MHz. Supporting up to 8 MB of DRAM and a block transfer rate greater than 22 MB/s, the CPU330 easily accommodates applications requiring high-speed data transfers. Utilizing Kontron / Thales / Cetia's Express Memory Architecture, the board's memory refresh overhead is cut by 51% over standard memory architecture designs. The dual-accessed DRAM has software-selectable VMEbus addressing. The queued refresh scheme and the support of cache burst fill requests (4-2-2-2) are standard.

Two serial ports controlled by the SCN68562 communications controller allow access to peripherals over standard EIA-232/422 protocols. Control and status registers are programmable by software. The SRAM (32K x 8) is battery-backed as is the time-of-day clock/calendar (TODC). The interrupt handler responds to all seven VMEbus IRQs, ACFAIL, SYSFAIL, and local interrupts with software-controlled masks and real-time status sense. The time-slice generator has four selectable periods: off, 1, 10, and 20 ms.

The CPU330's daughter board interface uses the public domain Dbus-68 standard to simplify the design of application specific daughter boards. The Dbus-68 features full 32-bit address and data paths and supports off-the-shelf daughter boards such as SCSI, serial, parallel, and Ethernet. The CPU330's flexibility is further enhanced by its software programmable board configurations and status registers for address maps, interrupt control, and other on-board control.