Verilog HDL synthesis a practical primer

... given a standard cell library and certain design constraints. A standard cell library can have simple cells, such as basic logic gates like and, or, and nor, or macro cells, such as adders, ... muxes, and special flip- flops. A standard cell library is also known as the technology library. It is discussed in detail later in this chapter. Logic synthesis always existed even in the...

Ngày tải lên: 24/12/2013, 11:17

... variable definition. 14.3.2 Verilog Operators Almost all operators in Verilog are allowed for logic synthesis. Table 14-2 is a list of the operators allowed. Only operators such as === and ... negation logical and logical or Relational > < >= <= greater than less than greater than or equal less than or equal Equality == != equality inequality Bit-wise ~...

Ngày tải lên: 24/12/2013, 11:17

... point. Example 14-1 RTL for Magnitude Comparator //Module magnitude comparator module magnitude_comparator (A_ gt_B, A_ lt_B, A_ eq_B, A, B); //Comparison output output A_ gt_B, A_ lt_B, A_ eq_B; ... input [3:0] A, B; assign A_ gt_B = (A > B); / /A greater than B assign A_ lt_B = (A < B); / /A less than B assign A_ eq_B = (A == B); / /A equal to B endmodu...

Ngày tải lên: 24/12/2013, 11:17

... construct called attribute. Attributes such as full_case, parallel_case, state_variable, and optimize can be included in the Verilog HDL specification of the design. These attributes are used by synthesis ... Specification Design constraints are as important as efficient HDL descriptions in producing optimal designs. Accurate specification of timing, area, power, and environmenta...

Ngày tải lên: 24/12/2013, 11:17

... newspaper; wire newspaper; //internal FSM state declarations wire [1:0] NEXT_STATE; reg [1:0] PRES_STATE; //state encodings parameter s0 = 2'b00; parameter s5 = 2'b01; parameter ... Thus, not all Verilog constructs are acceptable to a logic synthesis tool. We discussed the acceptable Verilog constructs and operators and their interpretation in terms of digital...

Ngày tải lên: 24/12/2013, 11:17

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Ngày tải lên: 19/02/2014, 15:20

... Case 3: Begin … các lệnh… end … default: begin … các lệnh… end endcase 2. Ví dụ: Case (alu_clk) 2’b00: aluout = a + b; 2’b01: aluout = a - b; 2’b10: aluout = a & b; default: ... 2. “Introduction of Verilog Peter M. Nyasulu 3. “Cadence Verilog – XL Reference Manual” 4. “Synopsys HDL Compiler for Verilog Reference Manual” 5. Diglab 10K10 Mannual Tóm tắt...

Ngày tải lên: 20/08/2012, 09:01

... UK Preface There are now many large and authoritative texts on obstetric anaesthesia and analgesia available to the anaesthetic trainee. With reduced time available for obstetric anaesthetic training, ... epidural anaesthesia is chosen, standard techniques are used. The procedure itself requires a less extensive block than Caesarean section Analgesia, Anaesthesia and Pregnancy: A Practi...

Ngày tải lên: 21/09/2012, 10:39

... international normalized ratio (INR), and a liver panel. Although the serum aminotransferase level correlates poorly with liver histology, the ratio of aspartate aminotransferase (AST) to alanine ... is a common cause of chronic liver disease and hepatocellular carcinoma. HCV antibody and HCV RNA testing are available diagnostic studies that offer high degree of accuracy. Current st...

Ngày tải lên: 02/11/2012, 09:51