Function Block Specifics

To access specific details for a particular function block, click on that function block in either the Mapped Logic, Mapped Inputs, or Function Blocks sections of the fitter report. The function block details page displays a table of details about the particular function block you selected, a view button you can click to show a graphical display of the function block, and a pulldown menu you can use to select other function blocks to see.

The Table

The View

The Table

The table at the top of the function block details page provides the following information about the function block:

The signal name

Note: Clicking on a signal name will open a new window with the equations for that signal.

The total product terms used
A list of product terms

Note: Clicking on a product term will open a new window with the equations for that term.

The macrocell number in which the function block is located

Note: Clicking on the underscored macrocell number will provide a graphical display of the macrocell that looks like this:

The power mode
The pin number - an asterisk "*" indicates a user assignment

Note: Clicking on the underscored pin number will provide the pin layout diagram for the highlighted pin. Rolling your mouse over the colored pin will pop up a tooltip with the signal name assigned to the pin, the I/O standard, the I/O style, the slew rate, and/or any constraints assigned to the pin:

The pin type
The pin use
XPLA3 only - The GCK (Global Clock Signal) mapping

Note: Moving your mouse cursor over an "I" in the Pin Use column will display that input signal as a tooltip.

XBR only - Below the resource table there is another table listing the Function Block Control Term usage, the product term mapped to the control term is listed. Clicking on the product term will bring up a pop-up window displaying that product term.

CTC - control term clock

CTR - control term reset

CTS - control term set

CTE - control term output enable

Below this table you will find a list of signals used by logic in the function block you are viewing. The list displays output signals as links. Clicking on an output signal link will open a new window showing the equations for that signal.

Note:There is also a button below the table. Click this button to open a new window describing all of the acronyms used in the function block table. You can select either brief descriptions or more detailed descriptions by clicking the "Verbose" button at the top of the window.

The View

When you click on the button above the table, a new window will open with a graphical display of the function block you are examining. The pins are all color-coded: input pins are green, output pins are blue, and clocks are magenta:

Right-click anywhere within the window to pull up a menu that allows you to zoom in or out for easier viewing.

This menu also allows you choose to see all of the input connections, all of the output connections, or both at once. Like the pins, the signals are color-coded: inputs are red, outputs are yellow, and macrocell connections are aqua:

To examine the signals of single pins, simply click the pin whose signals you wish to see. To examine multiple pins without having to see everything at once, hold down the control key while you click the pins you want to view.

To view the signals for individual macrocells:

Click the inside edge of the macrocell to display its macrocell connections and inputs.

Click the outer edge to display its output signals

Click in the center to display everything

Double click in the center to open a new window with a detailed macrocell diagram