Invention Grant
- Patent Title: Die-wise residual bit error rate (RBER) estimation for memories
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Application No.: US16242155Application Date: 2019-01-08
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Publication No.: US10707901B2Publication Date: 2020-07-07
- Inventor: Poovaiah M Palangappa , Ravi H. Motwani , Santhosh K. Vanaparthy
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Compass IP Law, PC
- Main IPC: H03M13/11
- IPC: H03M13/11 ; G06F11/10 ; G11C29/04 ; H03M13/37 ; H03M13/00 ; H03M13/53

Abstract:
Examples include techniques for improving low-density parity check decoder performance for a binary asymmetric channel in a multi-die scenario. Examples include logic for execution by circuitry to decode an encoded codeword of data received from a memory having a plurality of dies, bits of the encoded codeword stored across the plurality of dies, using predetermined log-likelihood ratios (LLRs) to produce a decoded codeword, return the decoded codeword when the decoded codeword is correct, and repeat the decoding using the predetermined LLRs when the decoded codeword is not correct, up to a first number of times when the decoded codeword is not correct. When a correct decoded codeword is not produced using predetermined LLRs, further logic may be executed to estimate the LLRs for a plurality of buckets of the plurality of dies, normalize magnitudes of the estimated LLRs, decode the encoded codeword using the normalized estimated LLRs to produce a decoded codeword, return the decoded codeword when the decoded codeword is correct, and repeat the decoding using the normalized estimated LLRs when the decoded codeword is not correct, up to a second number of times when the decoded codeword is not correct.
Public/Granted literature
- US20190140660A1 DIE-WISE RESIDUAL BIT ERROR RATE (RBER) ESTIMATION FOR MEMORIES Public/Granted day:2019-05-09
Information query
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