US 12,366,967 B2
Data masking for pulse amplitude modulation
Keun Soo Song, Eagle, ID (US)
Assigned to Micron Technology, Inc., Boise, ID (US)
Filed by Micron Technology, Inc., Boise, ID (US)
Filed on Jul. 10, 2024, as Appl. No. 18/768,944.
Application 18/768,944 is a division of application No. 17/821,594, filed on Aug. 23, 2022, granted, now 12,073,084.
Claims priority of provisional application 63/239,673, filed on Sep. 1, 2021.
Prior Publication US 2024/0361914 A1, Oct. 31, 2024
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0613 (2013.01) [G06F 3/0629 (2013.01); G06F 3/0673 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an interface for a memory interconnect;
data path circuitry configured to:
implement pulse amplitude modulation (PAM) signaling for data written to or data read from memory via the interface, and
data mask logic that is configured to:
receive, via a set of data lines of the memory interconnect, a set of PAM symbols with respective states that correspond to a group of data bits;
determine, for the set of PAM symbols, a number of the respective states that match a predefined state useful to indicate data masking;
compare the number of the respective states of the set of PAM symbols that match the predefined state to a data masking threshold; and
enable data masking for the group of data bits in response to the number of the respective states that match the predefined state exceeding the data masking threshold.