VHDL Programming

Accurate timing check support—Checks include setup checks, hold checks, pulsewidth checks, period checks, and accurate glitch d ...

Package contains procedures and functions for accurate delay modeling, timing checks, and timing error reporting. The VITAL Prim ...

in2, and pin-to-pin delays from input in1to output yand from input in2 to output y. Following is the VITAL model that implements ...

-- functionality results VARIABLE Results : STD_LOGIC_VECTOR(1 to 1) := VARIABLE Results : (others => ‘X’); ALIAS Y_zd : STD_ ...

tpd_in1_ymodels the pin-to-pin delay from input in1to output y. Generic tidp_in2_ymodels the pin-to-pin delay from input in2to o ...

Attribute VitalLevel1specifies that the VITAL model is level 1 compliant. Level 1 models are modeled only with VITAL primitives ...

The VitalPathDelay01procedure has a number of parameters passed to it. These parameters are used to control what kind of glitch ...

tpd_PRN_Q_negedge : VitalDelayType01 := DefPropDelay01; tpd_CLRN_Q_negedge : VitalDelayType01 := DefPropDelay01; tpd_CLK_Q_posed ...

-- BEHAVIOR SECTION -------------------- VITALBehavior : process (D_ipd, CLRN_ipd, PRN_ipd, CLK_ipd) -- timing check results VAR ...

CheckEnabled => TO_X01(( (NOT PRN_ipd) ) OR ( (NOT CLRN_ipd) ) ) /= ‘ 1 ’, RefTransition => ‘/’, HeaderMsg => InstanceP ...

The first thing to notice about this model is that there are quite a few more generics used to pass timing information to the mo ...

and route tools and contains accurate timing for the device. The SDF file contains timing information for all of the generics in ...

The last section is a timing check section that contains timing infor- mation for the timing checks of the cell, if they exist. ...

-- ready : IN std_logic; -- reset : IN std_logic; -- rw : OUT std_logic; -- vma : OUT std_logic); --END cpu; ARCHITECTURE EPF10K ...

end for; end topconrtl; configuration topconstruct of top is for behave for U1 : cpu use entity work.cpu(EPF10K10TC144_a3); end ...

Running the simulation through the entire process verifies the func- tionality of the placed and routed design. To verify the ti ...

until the design stops working to determine the maximum speed that the design will run. By running the design through the entire ...

Chapter 18 At Speed Debugging Techniques Throughout the book so far we have discussed a number of techniques for implementing VH ...

signals are to be probed. This debug core communicates through the JTAG port on the device to an HDL debugger executing on a hos ...

Instrumentor The designer reads the VHDL design into the instrumentor and specifies which signals to probe and which breakpoints ...