The Student's Guide to VHDL
Elsevier Science, 1998. gada 1. janv. - 336 lappuses
VHDL is a language for describing digital electronic systems. A vital, efficient step in the system design process, VHDL allows for the design and simulation of a hardware system prior to it actually being manufactured.
Offering the same clear, accessible style as The Designer's Guide to VHDL, The Student's Guide is designed as a main text for introductory VHDL courses, and as a supplementary text for courses that require VHDL-based project work, such as computer architecture, digital design, and digital logic courses. This new condensed text also serves as a quick, self-teaching guide for practicing engineers who need to learn only the basics of VHDL.
1.3. rezultāts no 37.
For example , most clocked devices require that the clock pulse be longer than some minimum duration . We can use the predefined primary " now " in an expression to calculate durations . We return to " now " in a later chapter .
For example , a clock driver process might execute the following assignment to generate the next two edges of a clock signal ( assuming T_pw is a constant that represents the clock pulse width ) : clk < = ' 1 ' after T_pw , ' O ' after ...
FIGURE 6-14 = procedure check_setup ( signal data , clock : in bit ; constant Tsu : in time ) is begin if clock'event and clock = ' 1 ' then assert data'last_event > = Tsu report " setup time violation " severity error ; end if ...
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