The AP underscored Wieldy and AP underscore ANK provide one way handshaking between two modules how
can we provide Two-Way handshaking between two hardware modules?
Inviter such as this lecture will cope with this question by introducing the AP underscore its port
interface.
Interface mode AP underscored includes a two way handshake signals with the data port, the handshake
is an industry standard, valid and acknowledged handshaking mechanism.
The AP underscored support level II protocol provides the following signals data port acknowledged signals
to indicate when data is consumed.
Vallet signal to indicate when data should be read.
Under the Toovey handshaking mechanism, when a module is going to receive data, it waits to receive
a valid signal on the desired input port.
When it receives the valid signal, it reads the data and sends back to acknowledge signal to the sender
module.
When a module assigns data on a port with an API underscore its interface, it activates the valid signal
and will wait for that knowledge.
When it receives an acknowledged signal, it activates the valid signal and releases the port's data
or assigns new data.
As this video is the last lecture that talks about Etchells Center says the next lecture will give you
a couple of exercises to review and master some of the techniques explained throughout this section.
These are our takeaway messages, interface mode, AP underscore includes a two way handshake signal
with the data port that underscore support level II protocol provides the following signals data port
acknowledged signal to indicate when data is consumed, while its signal to indicate when data should
be read.
Now, the quiz question.
Consider the following other design, synthesize the code and perform the RTL code simulation and check
the AP underscore X signaling in the waveform below.