Using Hierarchy A VHDL entity can have multiple architectures. A particular entity/architecture pair (referred to as a design entity) can also be referenced from another architecture as a VHDL component. Instantiating components within another design provides a mechanism for integrating partitioned ...
| Goteborg | Sweden +46 31 7758650 | frontgrade.com/gaisler LEON/GRLIB Guide 4 Multiple Buses, Clock Domains and Clock Gating 4.1 Introduction This section describes some techniques that can be used with GRLIB to create more complex system architectures with multiple buses and/or clock domains....
The Compute Lamda module is modelled using the VHDL and the module entity is shown in Fig. 3. Once the error locator polynomial (x) is found, the error evaluator polynomial S (x) is calculated by Eq. (9): S (x) = [1 + S(x)] 7(x) modx2t+1 (9) The Compute Omega module ...
package mygpkg at 13( 232) + 0 on 13; entity ent at 17( 293) + 0 on 14; architecture arch of ent at 23( 400) + 0 on 15; | It seems that I could build a hierarchy view of the packages, entities and architectures defined in each file. On top of that, the pretty print com...
entity counter is port (clk, reset: in bit; sum: out integer); end counter ; bold In examples, bold type indicates a word. In the example above, entity, is, port, in, out, and end are all words plain-text Regular plain type represents a user-definable identifier or another VHDL con...
ENTITY entity_name IS ARCHITECTURE body_name OF entity_name IS The "body_name" is a user-defined name that should uniquely describe the particular architecture model. ARCHITECTURE beh OF nand_gate IS ARCHITECTURE struct OF nand_gate IS Note: multiple architectures are allowed. Essential VHDL for...
5. 5. 1. 2 Updating Projected Waveforms per LRM 8. 4. 1 139 6. ELEMENTS OF ENTITY/ARCHITECTURE 145 6. 1 VHDL ENTI TY 145 6. 2 VHDL ARCHI TECTURE 150 6. 2. 1 Process Statement 152 6. 2. 2 Concurrent Signal Assignment Statements 156 ...
The reason for lumping together architectures and package bodies is that both their declarations are local, in contrast to those in packages. This can be visually distinguished by choosing a different appearance for this class and packdecl. bigdesc Description of major design element (entity, ...