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AR# 19007

LogiCORE Bit Correlator v3.0 - Is the Bit Correlator Core available for Virtex-II Pro or Spartan-3?


General Description:

In the COREGen GUI, the Bit Correlator Core is not available for Virtex-II Pro and Spartan-3. Are there any plans to offer this core for these devices?


The FPGA fabric for the Virtex-II/-II Pro and Virtex-4/Spartan-3 are similar. The fundamental difference between the Virtex-4/Spartan-3 and the Virtex-II/-II Pro is the CLB with two normal slices (SliceM) and two non-SRL16E/RAM16x1 (SliceL). As long as Relationally Placed Macros (RPMs) are not used, these differences do not affect using the Virtex-II Core in a Virtex-II Pro, Virtex-4 or a Spartan-3.

To use the core for Virtex-II Pro, Virtex-4, or Spartan-3, follow these steps:

1. Change the device for your ISE project to Virtex-II.

2. Select "Add a New Source" (to your ISE project) and select COREGen IP.

3. Run the COREGen GUI and generate the DDC Core.

4. Change the device for your ISE project back to Virtex-II Pro, Virtex-4 or Spartan-3.

5. Instantiate the core in your top-level source.

6. If the core needs to be re-parameterized, repeat steps 1-4.

NOTE: There are no performance numbers for the Bit Correlator, but the timing performance of the core might be adversely affected since RPMs cannot be used.
AR# 19007
Date 05/04/2011
Status Archive
Type General Article
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