Xilinx System Generator V2.1 Reference Manual page 34

Xilinx System Generator v2.1 Reference Guide
Block Parameters Dialog Box
The Counter block parameters dialog box is invoked by double-clicking the block
icon.
Figure 3-8: Counter block parameters dialog box
Parameters specific to the block are:
Other parameters used by this block are described in the Common Parameters section
of the previous chapter.
34
Number of Bits: specifies the number of bits in the counter.
Binary Point Position: specifies the location of the binary point.
Arithmetic Type: specifies the block ouput to be either Signed or Unsigned.
Start Count at: specifies the starting and reset value. The default is zero.
Count to Value: specifies the ending value, the number at which the counter
resets. A value of Inf denotes the largest representable output in the specified
precision. This cannot be the same as the start count.
Count By Value: specifies the increment, which must evenly divide the
difference between the extreme values.
Count Direction: specifies the direction of the count (Up or Down).
Provide Reset Pin: when checked, the block operates as a free running
counter with explicit reset port. In this case, there is no Count to Value setting.
Provide Load Pin: when checked, the block operates as a free running load
counter with explicit load and din port. The load capability is available only for
free running counter.
Xilinx Development System