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US 2025/0372149 A1Published application
Apparatuses and methods for increasing timing margins for decision feedback equalization
AssigneeMicron Technology, Inc.
InventorsBrian W. Huber, Shingo Mitsubori
Life of this patent
Estimating the term…
Abstract
A decision feedback equalizer (DFE) circuit may selectively receive a gated data strobe (DQS) signal based on an external DQS signal. The DFE circuit may capture data to store in a buffer responsive to receiving the gated DQS signal. After a write operation, an additional gating event may occur responsive to one or more internal signals. This may effectively delay when the gated DQS signal is received by the DFE circuit. The gated DQS signal may not be received by the DFE circuit until after a reset of the DFE buffer.
Claims20
A memory device comprising:
- an external terminal configured to receive an external data strobe (DQS) signal;
- a gating circuit configured to receive an internal DQS signal based on the external DQS signal and selectively provide a gated DQS signal;
- and
- a blocking circuit configured to receive a write start signal and provide a write start synchronization signal based on the write start signal to the gating circuit, wherein a gap in driving of the gated DQS signal is greater than a gap in driving of the external DQS signal.
1 more element
A method comprising:
- receiving an external data strobe (DQS) signal at a memory device;
- generating an internal DQS signal with the memory device based on the external DQS signal;
- gating the internal DQS signal;
- generating a write start signal in the memory device;
- blocking, responsive to a blocking signal, the write start signal and providing a write start synchronization signal;
- and
- responsive to a first state of the write start synchronization signal based on the write start signal, triggering a gating event and providing a gated DQS signal, wherein a first pulse of the gated DQS signal is later in time compared to a first pulse of the internal DQS signal.
4 more elements
Dependencies are inferred from the claim text.