NHI-15191RT 데이터 시트보기 (PDF) - Unspecified

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NHI-15191RT

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

Unspecified 

The address must be wired using pull- up and pull- down resistors. There are 64K internal pull- up

resistors in the protocol chip, so only external pull- down resistors of 4.7K are required. The

Hardwire Address is read and loaded into the terminal at Power- On Reset, Hardware Reset, and

Software Reset.

The terminal address can be changed at any time through software by writing a new address to

the Basic Status Register, however, if any of the above resets occur, the Hardwire Address will

be re- loaded into the terminal. The software address can be locked out by setting Bit2 in

Configuration Register 1.

4.0.0

DATA STRUCTURE

4.1.0

ADDRESS MAP

The NHi- RT appears to the host as 16K words of memory divided into the following blocks:

ADDRESS RANGE

0 -- 30

31

32 -- 35

64 -- 16383

DESCRIPTION

INTERNAL REGISTERS

I/O TAG WORD

I/O SPACE

SHARED RAM

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