Introduction
This user’s manual provides general information, preparation for use and installation instructions, operating instructions, and a functional description for the MVME197LE version of the MVME197 series of single board computers.
General Description
The MVME197LE module is a double-high VMEmodule based on the MC88110 RISC microprocessor. The MVME197LE has 32/64MB of DRAM, 1MB of FLASH memory, 8KB of static RAM (with battery backup), a time of day clock (with battery backup), an Ethernet transceiver interface, four serial ports with EIA-232-D interface, six tick timers, a watchdog timer, 128/256KB of BOOT ROM, a SCSI bus interface with DMA (Direct Memory Access), a Centronics printer port, an A16/A24/A32/D8/D16/D32 VMEbus master/slave interface, and a VMEbus system controller.
Input/Output (I/O) signals are routed through the MVME197LE’s backplane connector P2. A P2 Adapter Board or LCP2 Adapter board routes the signals and grounds from connector P2 to an MVME712 series transition module. The MVME197LE supports the MVME712M, MVME712A, MVME712AM, and MVME712B transition boards (referred to here as the MVME712X, unless separately specified). The MVME197LE also supports the MVME712-12 and MVME712-13 (referred to as the MVME712-XX, unless separately specified). These transition boards provide configuration headers, serial port drivers, and industry standard connectors for the I/O devices.
The MVME197LE modules have eight ASICs (Application-Specific Integrated Circuits) described in the following order: BusSwitch, DCAM, ECDM, PCC2, and VME2.
The BusSwitch ASIC provides an interface between the processor bus (MC88110 bus) and the local peripheral bus (MC68040 compatible bus). Refer to the MVME197LE block diagram (Figure 1-1). It provides bus arbitration for the MC88110 bus and serves as a seven level interrupt handler. It has programmable map decoders for both busses, as well as write post buffers on each, two tick timers, and four 32-bit general purpose registers.
