NHI-15191RT 데이터 시트보기 (PDF) - Unspecified

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NHI-15191RT

Multi-Protocol Data Bus Interface NHi-RT Expanded Memory Remote Terminals

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3.1.2

REMOTE TERMINAL HIGHLIGHTS:

•DBCA_ L bit is controlled in configuration register.

•Message Illegality is internally programmable. DOES NOT require external PROMS or glue

logic.

•Employs data tables with individual tag words which indicate whether or not the data is valid,

updated since last read, in the process of being updated, was received via broadcast

command, or has been lost (i. e. updated more than once by a receive message before being

read).

•Optionally sets the subsystem flag bit whenever stale data is transmitted or received data is

overwritten.

•Issues interrupts on any subset of T/ R bit, subaddresses, mode commands, broadcast

messages and errors.

•Provides interrupt priority input and output pins for daisy- chaining interrupt requests.

messages.

•Optionally resets the real- time clock in response to a "Synchronize" mode command.

•Optionally updates the lower 16 bits of the real- time clock in response to a "Synchronize

WithData" command.

•Indicates the reception of specific commands by outputting pulses on any one of 8 pins.

•Internally loops- back messages under host control for test purposes.

•Employs a decoder algorithm which ensures high noise immunity and a low error rate.

•Software RT Address Lockout.

•MDC3818 Status Response, Error Handling, Status Bit Definition, Mode Code Operation.

•Separate Broadcast Interrupts.

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