REXROTH PST6250.333l Data acquisition card

The MVME162 supports mass storage subsystems through the industrystandard SCSI bus. These subsystems may include hard and floppy disk drives, streaming tape drives, and other mass storage devices. The SCSI interface is implemented using the NCR 53C710 SCSI I/O controller. Support functions for the NCR 53C710 are provided by the MCchip. Refer to the NCR 53C710 user’s guide and to the MVME162 Embedded Controller Programmer’s Reference Guide for detailed programming information. Refer to the MVME712-12, MVME712-13, MVME712A, MVME712AM, and MVME712B Transition Modules and LCP2 Adapter Board User’s Manual or to the MVME712M Transition Module and P2 Adapter Board User’s Manual for the pin assignments of the transition module SCSI connectors.

SCSI Termination 

The individual configuring the system must ensure that the SCSI bus is properly terminated at both ends. The MVME162 provides sockets for SCSI bus terminators on the P2 adapter board or the LCP2 adapter board. If the SCSI bus ends at the adapter board, then termination resistors must be installed on the adapter board. +5V power to the SCSI bus TERMPWR signal and termination resistors is provided through a fuse located on the adapter board.

Programmable Tick Timers 

Four 32-bit programmable tick timers with 1 µs resolution are provided in the MCchip and two 32-bit programmable tick timers are provided in the optional VMEchip2. The tick timers can be programmed to generate periodic interrupts to the processor. Refer to the MCchip and VMEchip2 descriptions in the MVME162 Embedded Controller Programmer’s Reference Guide for detailed programming information.

Local Resources The MVME162 includes many resources for the local processor. These include tick timers, software programmable hardware interrupts, watchdog timer, and local bus timeout.

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