FPGA SmartVID - Design guidance for SmartVID capable FPGAs Voltage Regulator selection. Design guidance for SmartVID capable FPGAs Voltage Regulator selection. Design Pages {"title":"FPGA SmartVID"} Overview SmartVID is a feature on select Altera® FPGAs where the device identifies the optimal voltage that it should be operated at, and provides this information to the power regulator via the PMBus. The term represents Smart Voltage IDentification (SmartVID). The SmartVID feature compensates for process variation by narrowing the process distribution using voltage adaptation. The feature allows a voltage regulator to provide the SmartVID device with VCC and VCCP voltage levels that optimize its performance by dynamic voltage adjustment. It is managed by the Secure Device Manager (SDM) subsystem. Several Altera® FPGA Families support the SmartVID which is indicated by a suffix in the ordering part number (OPN), these include: Agilex™ 7 F-Series and I-Series devices with suffix: -V, -E, and -X Agilex™ 7 M-Series devices with suffix: -V, and -E Agilex™ 5 devices with suffix: -V, -E, -S, and -X Stratix® 10 devices with suffix: -V Overview Table 1. SmartVID device support for PMBus Important: The PMBus operating mode is application dependent and must be determined prior to board design to ensure all required signals are supported. Incorrect implementation may prevent the configuration of the device. Each SmartVID device supports PMBus Controller and Target Modes with 1.8-V single-ended I/O standard. PMBus Interface Signal PMBus Controller 1 Operating Mode PMBus Target 2 Operating Mode PWRMGT_SCL Required Required PWRMGT_SDA Required Required PWRMGT_ALERT - Required 1. Controller formerly master 2. Target formerly slave Recommended Voltage Regulators Recommended Voltage Regulators Table 2. Recommended PMBus-Compliant Voltage Regulator Important: A PMBus Compliant Voltage Regulator must be used to supply power to SmartVID devices. If the voltage regulator is not properly selected and implemented, the device configuration will fail, and likely result in a costly board spin. A PMBus Compliant Voltage Regulator must be used to supply power to SmartVID devices. FPGA Device Family Fully Validated 1 API Validated Only 2 Agilex™ 7 ISL682XX ISL69260 LTC3888-1 LTM4677 PXE1410CDM_G005 XDPE12284C XDPE15284D FS1525 MPM3695-10 MPM3698 MP2975 MAX20796 MAX20734 MAX20743 MAX20855 XDPE1A2G5B LTC3888 LTC3888-2 LTM4678 LTM4680 LTM4681 TPS53676 Agilex™ 5 TPS53676 LTC3882-1 ISL68223 LTC7883 Stratix® 10 LTM4677 Column Term Definitions: Fully Validated: These regulators are regression tested and validated for every release of Quartus® Prime Pro software. Altera® strongly recommends using one of these regulators. API Validated: These devices are known to be API compatible with the SDM power management firmware but have not been physically tested. SmartVID Debug Checklist and Voltage Regulator Guidelines Review AN 974: Agilex™ 7 and Stratix® 10 SmartVID Debug Checklist and Voltage Regulator Guidelines documentation before designing the board, this user guide provides the requirements for SmartVID devices and helps designers choose a voltage regulator compatible with power management firmware run by FPGA Secure Device Manager (SDM). Table 3. Voltage Regulator Coefficients Important: To prevent configuration failure make sure the Coefficient value for Voltage Regulator is correct when populate the setting in Quartus® Prime Pro Edition Software. Incorrect coefficients value may cause the Voltage Regulator to provide incorrect voltage value to the FPGA and may cause configuration failure. Voltage Regulator​ Vout_Format​ Coefficients ​ Unit​ LTC7883 Linear​ N = -12 Volt​ LTM4677​ Linear​ N = -12​ Volt​ LTM4681 5 Linear N = -12 Volt LTC3888​ 6 LTC3888-1 6 LTC3888-2 6 Linear​ N = -12​ Volt​ LTC3882-1 6 Linear​ N = -12​ Volt​ TPS53676​ Linear​ N = -10​ Volt​ ISL682xx/1xx​ Direct​ m=1, b=0, r=3​ Volt​ m=1, b=0, r=0​ millivolt ISL69260​ Direct​ m=1, b=0, r=3​ Volt​ m=1, b=0, r=0​ millivolt MAX20796/ MAX20734/43 Linear N = -9 Volt MAX20855 VID_Table 2 m = 1, b = -490, r = -1 millivolt MP2975​ VID_Table 2 m=2, b=-490, r=-1​ millivolt​ MPM3698​ VID_Table​ 2 m=200, b=-49, r=0​ Volt​ VID 7 Base voltage = 250mV, step size = 5mV millivolt XDPE 1A2G5B Linear N = -10 Volt​ XDPE 15284D​ Linear​​ 1 N = -9​ Volt​ XDPE 12284C IMVP9 2,3 m=1, b=-200, r=-1 millivolt PXE1410CDM_G005​ VID_Table 2,4 (VR12.0 5mV step)​ m=2, b=-490, r=-1​ millivolt VID 7 Base voltage = 250mV, step size = 5mV millivolt The default Mode and Exponent associated with the XDPE15284D are configured to support Linear Mode and Exponent of -9. Set the slave device type to Other, voltage output format to Direct format in the Power Management setting when use VR with this vout_format. The default Mode and Coefficients associated with XDPE12284C are configured to support IMVP9. The default Mode and Coefficients associated with PXE1410CDM_G005 are configured to support VR12.0. Set the slave device type as LTM4677 in Quartus to use this VR This VR is having a slow readback response time and tends to cause a longer configuration time. Set the voltage output format to VID format in the Power Management setting when use VR with this vout_format in Quartus 26.1 onwards. Documentation Table 4. Documentation User Guide Topic User Guide Description Power Management User Guides Agilex™ 7 Power Management User Guide Agilex™ 5 Power Management User Guide Stratix® 10 Power Management User Guide These user guides provide information related to SmartVID feature implementations. Review the user guides to understand on the PMBus communication between FPGA and voltage regulator. Power Distribution Network User Guides Device-Specific Power Delivery Network (PDN) Tool 2.0 User Guide Agilex™ 7 Power Distribution Network Design Guidelines Agilex™ 7 and, Agilex™ 5, Stratix® 10 SmartVID Debug Checklist and Voltage Regulator Guidelines Agilex™ 5 Power Distribution Network Design Guidelines These user guides provide information for Power Distribution Network (PDN) that allow you to successfully complete your PDN design, without requiring additional support. Related Links Power Distribution Network Related Links Ethernet Support Center Device configuration Transceiver PHY IP JESD204B IP Quartus® Prime design software Power solutions PCI Express* IP DisplayPort IP Signal integrity and power integrity Other Technologies - 2026-03-15