Xilinx V2.1 - Manual (Page 32)

32 Xilinx Development System
Xilinx System Generator v2.1 Reference Guide
Block Parameters Dialog Box
The block parameters dialog box can be invoked by double-clicking the icon in your
Simulink model.
Figure 3-7: Convert block parameters dialog box
All the parameters of the Convert block are parameters common to other blocks.
Please refer to the Common Parameters section in the previous chapter for details.
Parameters defining the desired output type are:
•
Output Arithmetic Type
•
Number of Bits
•
Binary Point
Parameters defining the quantization effect and the overflow effect are:
•
Quantization Behavior
•
Overflow Behavior
The Convert block does not use a Xilinx LogiCORE.
Counter
The Xilinx Counter block implements an up or down counter. It can be
configured to step between the starting and ending values, provided the
increment evenly divides the difference between the starting and ending
values. The counter output and increment values can be fixed point
numbers in addition to integers.
The output for an up counter is calculated as follows:
The down counter calculation replaces addition by subtraction.