Single-ended signal equalization with a programmable 1-tap decision feedback equalizer
US9542991B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2016 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Mar 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4074
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a first circuit and a second circuit. The first circuit may be configured to (i) receive a sequence of input values that have been carried on a single-ended line of a data bus coupled to a memory channel, (ii) slice a previous input value of said sequence of input values to generate a previous output value, (iii) slice a current input value of said sequence of input values to generate a current output value, and (iv) present said current output value on a differential line. The previous input value generally precedes said current input value in said sequence of input values. The second circuit may be configured to decode said previous input value based on a tap coefficient value to generate a plurality of feedback values suitable to reduce an inter-symbol interference in said current input value caused by said previous input value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.