Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Is parallel-if statement in edge trigger block synthesizable?

Status
Not open for further replies.

iamovid

Newbie level 2
Joined
Aug 23, 2012
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,314
Hi guys,
I need ur help. Currently I am working on a project using 2-dimensional arrays.
And for some purposes, I need to implement it in a pipelined way. So I use parallel-if in edge triggered always block.
Related tutorial is referred in this link http://www.asic-world.com/verilog/vbehave2.html.

This is the sample code from ASIC-WORLD.COM
1 module parallel_if();
2
3 reg [3:0] counter;
4 wire clk,reset,enable, up_en, down_en;
5
6 always @ (posedge clk)
7 // If reset is asserted
8 if (reset == 1'b0) begin
9 counter <= 4'b0000;
10 end else begin
11 // If counter is enable and up count is mode
12 if (enable == 1'b1 && up_en == 1'b1) begin
13 counter <= counter + 1'b1;
14 end
15 // If counter is enable and down count is mode
16 if (enable == 1'b1 && down_en == 1'b1) begin
17 counter <= counter - 1'b1;
18 end
19 end
20
21 endmodule


My sample code is as follows

integer i;
reg [7:0] array[0:10];

always@( posedge clk or negedge rstn )
begin
if ( !rstn )
for ( i = 0; i < 10; i = i + 1 )
array <= 0;
else
begin
if ( condition_a )
array[index] <= c;
if ( condition_b )
array[index_delay_1T] <= d;
end
end

in my codes, condition_a and condition_b can be enabled simultaneously which differs from the sample code in ASIC-WORLD.COM

The codes above passed nLint check and seems to be synthesizable using design compiler.

My concern is this a legal way for a design or anything I must take care of it.

Thanks for ur comment in advance.
Apologize for my poor English.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top