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1.1. Definitions
1.2. Understanding SSN
1.3. Guidelines: Data Input Pin
1.4. Guidelines: Clock and Asynchronous Control Input Signal
1.5. Guidelines: Clock and Data Input Signal for MAX® 10 E144 Package
1.6. Guidelines: I/O Restriction Rules
1.7. Guidelines: Placement Restrictions for 1.0 V I/O Pin
1.8. Guidelines: LVTTL/LVCMOS I/O Utilization for MAX® 10 FPGA Package B610
1.9. Guidelines: External Memory Interface I/O Restrictions
1.10. Guidelines: Board Design Requirement for DDR2, DDR3, and LPDDR2
1.11. Guidelines: Analog-to-Digital Converter I/O Restriction
1.12. Guidelines: Voltage-Referenced I/O Standards Restriction
1.13. Guidelines: Adhere to the LVDS I/O Restrictions Rules
1.14. Guidelines: Enable Clamp Diode for LVTTL/LVCMOS Input Buffers
1.15. Guidelines: ADC Ground Plane Connection
1.16. Guidelines: Board Design for ADC Reference Voltage Pin
1.17. Guidelines: Board Design for Analog Input
1.18. Guidelines: Board Design for Power Supply Pin and ADC Ground (REFGND)
1.19. Guidelines: MAX® 10 Variable Pitch BGA (VPBGA) Package Overview and Board Fan-Out Recommendations
1.20. Document Revision History for the MAX® 10 FPGA Signal Integrity Design Guidelines
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1.7.1. Calculating the Total Inductance for 1.0 V Pin Placement
You can calculate the total inductance of the surrounding pins by using mutual inductance values in the max10-1v-mutual-coupling.zip file.
- Download the max10-1v-mutual-coupling.zip file and extract the relevant mutual inductance spreadsheet for your device.
- In the mutual inductance spreadsheet, identify the pins in use.
- Calculate the total mutual inductance of the pin and surrounding pins in use to ensure that the placement adheres to the 1.0 V pin placement guideline.
- If the total inductance is above the guideline restriction, update your design to use other I/O pins that contribute less mutual inductance.
Total Mutual Inductance Calculation
Example Condition | Type | Example Result |
---|---|---|
Pin F5 is assigned with the 1 V I/O standard. The surrounding pins, F4, H3, and H4 are in the same I/O bank and are also assigned with the 1.0 V I/O standard. | Intrabank, all 1.0 V | Total Lm of F4, H3, and H4 does not exceed 7.4 nH. The placement does not violate the restriction. |
Pin F5 is assigned with the 1 V I/O standard. The surrounding pins, F4, H3, and H4 are in an adjacent I/O bank and are assigned with the 1.0 V I/O standard. | Interbank, all 1.0 V | Total Lm of F4, H3, and H4 does not exceed 7.4 nH. The placement does not violate the restriction. |
Pin F5 is assigned with the 1 V I/O standard. The surrounding pins, F4, H3, and H4 are in an adjacent I/O bank and are assigned with the 2.5 V I/O standard. | Interbank, mixed voltages | Total Lm of F4, H3, and H4 exceeds 1.0 nH. Update your design to use other I/O pins with smaller mutual inductance. |
Pin Name | Mutual Coupling Pin | Mutual Inductance (nH) |
---|---|---|
F5 | F5 | 3.496 1 |
F5 | F4 | 1.378 |
F5 | H3 | 0.273 |
F5 | J4 | 0.263 |
F5 | K4 | 0.222 |
F5 | E4 | 0.194 |
F5 | F3 | 0.176 |
F5 | H4 | 0.175 |
F5 | E3 | 0.174 |
F5 | G3 | 0.167 |
F5 | G4 | 0.161 |
1 Self inductance for pin F5. Omit this value from the Lm calculation.