How can we use a single cycle design idea to describe a sequential search?
Let's take a simple second example and follow the design approach.
Our sequential second example is a parallel to Sario convert.
There are several ways to implement a parallel to convertor, probably our implementation here is not
the most efficient, but it is a very instructive example to show our design techniques.
This circuit receives an eight bit of data through an eight Beatport and sends that out bit by bit in
each cycle, it sends one bit out, starting from the least significant bit.
We also onto other outputs to the design to indicate the first bit and the last bit in the output sequence.
Therefore, this would be the timing diagram of the circuit execution during the first cycle.
The start.
It is one and that the output carries the first bit of data, which is one during the second clock cycle
has the second bit, which is zero.
This behavior continues to the eighth clock cycle.
Just during the eight o'clock, the end output is one indicating the end of the conversion.
This figure shows the same signals generated by White House officials after synthesizing our design
and running the article Sea Coast Simulation.
Let's consider our convert, it consists of a combination of circuit and a set of reforms to save the
secular states, actually their states represents the number of bids sent out serially.
In other words, it counts the number of processed meats.
We assume that throughout the design execution, the input provides the input value and it is a SABL.
In the single cycle design approach, we should write a function that reads the state sends one bit
out and modifies the state.
Before starting to code, let's add another input signal to our design, which commands the circuit
to launch the conversion, the signal is called begin.
We assume that the value of one on this signal lasts for one clock cycle.
So when our circuit detects the level of one, it starts the conversion.
Now, let's describe the circuit behavior, why a flowchart diagram, please recall that the circuit
has a counter as its state variable.
The designer starts with checking the logic of value on the beacon signal, if it is one, it resets
the counter to zero and then checks the counter value.
If the signal is zero, it directly checks the counter value without any extra work.
Based on the value in the counter variable, there are four parts in the code.
If the counter is zero, then the circuit should start conversion.
Therefore, it activates the surreal underscore start signal and puts the LSP bit on the output line
and commence the count.
If the counter is less than N minus one, where endnotes the number of bits in the input data here and
is eight, it sends out the next bits and increments, the count when the countdown reaches the value
of minus one, which indicates the last bit, it activates the surreal underscore and signal, sends
the mystery to the output and puts the end value to the counter to stop the conversion in the next iteration.
If the counter is N, which is not any of the aforementioned conditions, then the circuit does not
do anything useful.
Notice that this flow chart represents the second functionality during each collect cycle.
In other words, performing one iteration of this flow chart from the start to the end takes only one
clock cycle.
Let's start coding.
We need a top function that receives two inputs and eight data and the biggest single.
And generates three outputs, the serial output, the start and end signals.
Then we define a static variable named count to count the number of processed bits, we should initialize
that to an.
Firstly, we should check the biggest signal and reset the counter if it is one.
Then we need an if statement to distinguish for cases such as Eitel, the first bit, the last bit and
the other bits.
When the count is zero, the code should assign the logic value one to the start output signal and the
logic value is zero to the end signal.
In addition, it should send out the first data with wire the the output and then increment the count
state variable when the count is seven, which means that the last bit is going to be processed.
The code should set the logic value of one to the end signal and the zero logic value to the start.
Then send out the last bit of data and reset the count state variable to n if the count variable is
less than seven to start and end signal or zero and the corresponding data is assigned to download also
the count, the state variable is increment.
Finally, the Ellis case determines the of the United States.
As the second example, the next lecture will explain unnaturalness code to describe a surreal to Parrello
convert.
These are our takeaway messages, a parallel to Sergio convertor sends out one bit of the parallel data
on each page of the clock.
A single cycle design flaw can be used to implement a parallel to Sariel convert.
It's nothing valuable can be used as a counter to save the circuit state.
Now, the quiz question modifying the parallel to sell your code to send out serially a 16 beat update.