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Altera_Forum's avatar
Altera_Forum
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18 years ago

asynchronous-parallel loadable shift register

Hi..

I want to know more about "asynchronous-parallel loadable shift register"..

The sentence is like..

the serial interface consists of an asynchronous-parallel loadable shift register.

As far as i know, Shift register is clear for me (It will shift data on each clock)

Parallel loadable mean a Function that allows loading of a binary value into counter.

Asynchronous mean not synchronous data with clock.

in short, Code is made of Shift register and Counter..

Am i correct or wrong ?? if wrong then please clear my defination.

Sorry for this question coz this is very very basic question.

Thanking you.

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    18 years ago

    The parallel load doesn't refer to a counter, but to the shift register itself. It just means you can load a parallel value into the register chain, and this will be shifted out on subsequent clocks. So it's a parallel to serial interface. The word 'asynchronous' in your case must mean that the parallel data is loaded straight onto the registers without a clock.