Register-Transfer Level (RTL) Design

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Register-Transfer Level (RTL) Design
The combination of a controller and datapath is
known as a processor.
The most common method of designing a processor
is known as register-transfer level (RTL) design.
In the RTL design, a designer specifies the
registers, describes the possible transfers and
operations performed on input, output or register
data, and defines the control that specifies when
to transfer and operate on data.
There are two general categories of RTL design
A control-dominated design is a design whose
controller possesses the heart of the design
A data-dominated design is a design whose
datapath possesses the heart of the design.
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Example 5.1 Laser-based distance measurer
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Step 1 Create a high-level state machine
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Step 2 Create a datapath
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Step 3 Connect the datapath to a controller
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Step 4 Derive the controllers FSM
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Example 5.4 Video compression sum-of-absolute
differences
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