12th Generation Intel® Core™ Processors Datasheet, Volume 1 of 2


ID 655258
Date 28/10/2021 00:00:00
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DDR Frequency Shifting

DDR interfaces emit electromagnetic radiation which can couple to the antennas of various radios that are integrated in the system, and cause radio frequency interference (RFI).

The DDR Radio Frequency Interference Mitigation (DDR RFIM) feature is primarily aimed at resolving narrowband RFI from DDR4/5 and LPDDR4/5 technologies for the Wi-Fi* high and ultra-high bands (~5-7 GHz) .

By changing the DDR data rate, the harmonics of the clock can be shifted out of a radio band of interest, thus mitigating RFI to that radio. This feature is working with SAGV on, the 3rd SAGV point is used as RFI mitigation point.