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Typo fixing

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AurelienUoU 2019-09-30 10:38:02 -06:00
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docs/source/arch_lang/interconnect.rst
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Interconnection extensions
==========================
This section will introduce extensions on the architecture description file about existing interconnection description.
This section introduces extensions on the architecture description file about existing interconnection description.
Directlist
----------
The original direct connections in the directlist section is doccumented here_. Its description is given below:
The original direct connections in the directlist section are documented here_. Its description is given below:
.. _here: http://docs.verilogtorouting.org/en/latest/arch/reference/?highlight=directlist#direct-inter-block-connections
@ -32,36 +32,36 @@ Our extension include three more options:
* **x_dir**: [``positive`` | ``negative``], specifies if the next cell to connect has a bigger or lower x value. Considering a coordinate system where (0,0) is the origin at the bottom left and *x* and *y* are positives:
* x_dir="positive":
* x_dir="positive":
* interconnection_type="column": a column will be connected to a column on the **right**, if it exists.
* interconnection_type="column": a column will be connected to a column on the **right**, if it exists.
* interconnection_type="row": the most on the **right** cell from a row connection will connect the most on the **left** cell of next row, if it exists.
* interconnection_type="row": the most on the **right** cell from a row connection will connect the most on the **left** cell of next row, if it exists.
* x_dir="negative":
* x_dir="negative":
* interconnection_type="column": a column will be connected to a column on the **left**, if it exists.
* interconnection_type="column": a column will be connected to a column on the **left**, if it exists.
* interconnection_type="row": the most on the **left** cell from a row connection will connect the most on the **right** cell of next row, if it exists.
* interconnection_type="row": the most on the **left** cell from a row connection will connect the most on the **right** cell of next row, if it exists.
* **y_dir**: [``positive`` | ``negative``], specifies if the next cell to connect has a bigger or lower x value. Considering a coordinate system where (0,0) is the origin at the bottom left and *x* and *y* are positives:
* y_dir="positive":
* y_dir="positive":
* interconnection_type="column": the **bottom** cell of a column will be connected to the next column **top** cell, if it exists.
* interconnection_type="column": the **bottom** cell of a column will be connected to the next column **top** cell, if it exists.
* interconnection_type="row": a row will be connected on an **above** row, if it exists.
* interconnection_type="row": a row will be connected on an **above** row, if it exists.
* y_dir="negative":
* y_dir="negative":
* interconnection_type="column": the **top** cell of a column will be connected to the next column **bottom** cell, if it exists.
* interconnection_type="column": the **top** cell of a column will be connected to the next column **bottom** cell, if it exists.
* interconnection_type="row": a row will be connected on a row **below**, if it exists.
* interconnection_type="row": a row will be connected on a row **below**, if it exists.
Example
-------
For this example, we will study a scan-chain implementation.The description could be:
For this example, we will study a scan-chain implementation. The description could be:
.. code-block:: xml
@ -75,15 +75,15 @@ For this example, we will study a scan-chain implementation.The description coul
.. figure:: ./figures/point2point_example.png
An example of scan-chain implementation
An example of scan-chain implementation
In this figure, the red arrows represent the initial direct connection. The green arrows represent the point to point connection to connect all the columns of CLB together.
In this figure, the red arrows represent the initial direct connection. The green arrows represent the point to point connection to connect all the columns of CLB.
Truth table
-----------
A point to point connection can be applied in different ways than showed in the example section. To help the designer implement his own point to point connection, a truth table with our new parameters id provided below.
A point to point connection can be applied in different ways than showed in the example section. To help the designer implement his point to point connection, a truth table with our new parameters id provided below.
:numref:`fig_p2p_trtable` provides all possible variable combination and the connection it will generate.
@ -91,4 +91,4 @@ A point to point connection can be applied in different ways than showed in the
.. figure:: ./figures/point2point_truthtable.png
Point to point truth table
Point to point truth table