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Ixiasoft
1.2.2.1.1. Device Selection Section
1.2.2.1.2. Power Rail Data and Configuration Section
1.2.2.1.3. Meeting Target Impedance when Entering 0 A into the PDN Tool
1.2.2.1.4. Dealing with Multiple Shared Power Supply Pin Types
1.2.2.1.5. VRM Data Section
1.2.2.1.6. Rail Group Summary Section
1.2.2.1.7. VRM Impedance Section
1.2.2.1.8. BGA Via Section
1.2.2.1.9. Plane Section
1.2.2.1.10. Spreading Section
1.2.2.1.11. Implementing Split Planes
1.2.2.1.12. FEFFECTIVE Section
1.2.2.1.13. Decoupling Section
1.2.2.1.14. Results Summary Section
1.2.2.1.15. Recommended Flow for Deriving Decoupling for an FPGA System using the System_Decap Tab
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1.2.2.1.10. Spreading Section
In the Spreading table, you can set the tool to one of the following options:
- Ignore
- Low
- Medium
- High
- Custom
- Select the Library tab in the PDN tool 2.0.
- Set the parameters in the Spreading R and L table to match your system.
- Examine the range of spreading R and L values to determine if you need a custom R and L. If a custom R and L is warranted, select Custom in the System_Decap tab and set the R and L values directly.
Setting the Spreading table to Low, Medium, High, or Ignore causes the System_Decap tab to use the same global settings for all rail groups.