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Creating a Multi-page Design

As the complexity and size of an electronic design grows it becomes more necessary to have a better organized. We must always bear in mind that our diagram should be clear, easy to modify, and easy to read by others. To help with this challenge Multisim Design offers blocks, they are still the philosophy of "divide and conquer." The main idea is to split a large diagram in small plots easy to manage and update. There are three options in the Multisim design blocks, subcircuits, hierarchical blocks, and mult-ipágina design. In this last talk today.

As mentioned earlier, the idea of \u200b\u200bmulti-page design is to divide a large design and confused individual pages interconnected. As illustrated in the following figures, instead of having one large sheet, we can have our design on individual sheets:

To connect our circuit from one page to another using the off-page connectors , which are Multisim menu Place >> Connectors :

Here's how to make a multi-page design with a simple design. We will refer to the following circuit:

Let's split the previous circuit into two sections, A and B. The division was made at nodes 3 and 0:

Now let's add one more page to our design, and the page will post the section B. For this select Place >> Multi- page. Multisim will ask the name of this page, this case the name 2. Multisim will create a new page with the same status as the first. This can be corroborated in the window Design Tools:

leaf can change in just to click on them.

As next step go to page 1, select it and cut the circuit section B and paste it on page 2, so that now we have the Section A of the circuit on page Filter # 1 and Section B in Filter # 2 . To connect the two pages (and of course both nodes) we will use off-page connectors. Place selected >> Connectors>> Connector Outside P OAR. Place two of these connectors in the workplace:

Open the properties of the first connector (FueraPágina 1) and rename it to 3 (the node of interest.) Do the same with the connector FueraPágina 2, but in this case rename it to 0. Then connect the connectors to the respective owner nodes:

A hour we sheet Filter # 2 and repeat the same operation. Multisim will alert us that connectors with the same nodes ( 0 and 3) already exist, we will accept this change to connect 'virtual' between the two p OAR Circuit:

Ready! We now have a multi-page design. Off-page connectors virtual connections (or wireless) between the different sheets. We simulate the circuit and transfer to Ultiboard Multisim seamlessly as is our design as one.

Some notes before the end:

1. multi-page design is recommended when we have circuits that tend to be flat / horizontal.
2. All sheets of the circuit multi-page design are stored in one file.
3. saved file size tends to be large because it contains several pages.
4. can not reuse pages from a multi-page design in other circuits.

As always questions and comments are welcome.

soon,

Fernando

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LAVA TRAIL: mission accomplished Photos: Alberto R. Cardona

With nearly three hundred participants were given the outputs in the different modalities of this groundbreaking trial on the island of volcanoes. With the moon setting in Famara and the first light of dawning sun by Arrieta began early risers. After the departure from the sandy beach of La Garita and just over a mile and a half, began the climb towards the crags of Chache (highest point of the island of Lanzarote), from there you descend through a very technical trail to the sand on one beach, Playa de Famara, this time on the opposite coast. Before reaching the first supplies (PK35), the rate marked on the front of the stage coupled with uneven and technical terrain saved the descent, had no second thought and went on to take its toll by making walking a few participants. The course designed by the organization (Vulcano Triathlon Club) ran through the beautiful landscapes of Lanzarote (incredible beaches, gorges unknown volcanoes and lava, green-tinged mountains ,...) to the astonishment of many, both foreign and local unaware of others beyond the volcanic landscapes of the island hutch. WHITE BEACH TEJEDA A: Sergio Espinosa (8:57:08) he crossed the finish line after the Gran Canaria (De Tejeda to be exact) Gregorio Armas (8:32:58), winner of this first edition of the LAVATRAIL. The first woman would be Teresa Hernández Barrera (11:09:20). CESAR JAVIER : DORSAL 0 The goal was, next to her tenacious mother, Cesar Javier, conejero child with Lesch-Nyhan syndrome (severe disease), which together with the race organizers were trying to raise funds for the acquisition a car adapted to your needs (grants: 2052 8029 25 3310394508).

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LANZAROTE LAVA TRAIL: 19 FEBRUARY 2011

On Saturday February 19 will bring the first "ultra" mountain of the island of Lanzarote. With multiple modes (extreme, marathon, starter, equipment) for all levels, emphasize the queen away with 82 miles to go from the beach of La Garita, in the town of Haria in the north of the island to Playa Blanca the south. Arista Component Team Off Road Team, Sergio Espinosa, will be in the starting line, mixed with all participants to start running at 7:00 to follow the path chosen by the organization. More informacón in Www.lanzarotedeportes.es

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Building Code Multisim VHDL from Multisim - Part 2 Creating

from Multisim VHDL Building Code - Part 1

Continuing with the tutorial create VHDL code from a Multisim schematic in the first half we created a new design in Multisim PLD where we define the input and output logic circuit. Now let us capture the diagram, remember that our goal is function X = AB + CD , where A, B, C and D will tickets switches (SW0, SW1, SW2, SW3) and X is an LED (LED0 .)

Select the menu Place>> Component ... to open the browser components. It is noteworthy that since we are in LDP mode, the master database est to find only limited and related components digital logic. Take a moment to explore different groups and families are available in the Multisim database.

Now let PLD Logic Group , Family LOGIC_GATES and select the component AND2 (we will need two AND gates), also require an OR. Connect the circuit as shown in the figure below:

In summary remember q SW0 to SW3 entries correspond to real switches, and output to an indicator LED0 the logical function would be embedded in the FPGA chip. Here's part of the truth table for this circuit:

X = AB + CD

A	B	C	D	AB	CD	X
0	0	0	0	0	0	0
0	0	0	1	0	0	0
0	0	1	0	0	0	0
0	0	1	1	0	1	1

To test we simply plug our circuit input and an output indicator, or we can create another test circuit which is (we'll leave for another article), for the moment let's focus on the VHDL code generation. For this in Multisim go to menu Transfer >> Export to PLD ...

In the previous window we see that there are several options, assuming you have not connected any FPGA chip card we only generate the VHDL. We click Next , select a route for save the file, click Finish and ready. Multisim creates two files with the vhd. These files can be opened with a text editor. Here is a part:

In summary we conclude that the new PLD Multisim schematic can create a logic circuit and generate the VHDL code (required to program a FPGA) automatically. On the other hand, the PLD module works fine with the card NI Digital Electronics FPGA Board of National Instruments, which is ideal for laboratory acetic pr. In this card you can download VHDL code directly from Multisim.

I hope you have enjoyed this introduction to PLD schematic, do not forget to send your questions and comments.

soon,

Fernando