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2.5.3.4. SDM I/O Pins for Power Management and SmartVID
Intel recommends that you use LTC3888 or LTM4677 to regulate the PMBus. The LTM4677 device is the default setting for the Device > Device and Pin Options > Power Management & VID > Slave device type parameter. Select a regulator you use on your board. If you are using a different PMBus regulator, change the default setting from LTM4677 to Other.
Intel® Agilex™ SmartVID devices require SDM pins listed in the table below configured to control the VID regulator. To configure the pins, go to Device > Device and Pin Options > Configuration. Set the VID mode of operation accordingly to either PMBus Master or PMBus Slave, and set Configuration pin to Configuration Pin Options....
Pin | VID Mode of Operation | |
---|---|---|
PMBus Master | PMBus Slave | |
PWMGT_SDA | Required | Required |
PWMGT_SCL | Required | Required |
PWRMGT_ALERT | Not available | Optional |
Refer to the SmartVID Standard Power Devices section in the Intel® Agilex™ Power Management User Guide for more information about the Power Management and VID implementation guide.