Flash memory controller with calibrated data communication

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9405678
APP PUB NO 20160011973A1
SERIAL NO

14859991

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An integrated circuit device includes a transmitter circuit operable to transmit a timing signal over a first wire to a DRAM. The DRAM receives a first signal having a balanced number of logical zero-to-one transitions and one-to-zero transitions and samples the first signal at a rising edge of the timing signal to produce a respective sampled value. The device further includes a receiver circuit to receive the respective sampled value from the DRAM over a plurality of wires separate from the first wire. In a first mode, the transmitter circuit repeatedly transmits incrementally offset versions of the timing signal to the DRAM until sampled values received from the DRAM change from a logical zero to a logical one or vice versa; and in a second mode, it transmits write data over the plurality of wires to the DRAM according to a write timing offset generated based on the sampled values.

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Patent Owner(s)

  • RAMBUS INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Donnelly, Kevin S Los Altos, US 95 4566
Garlepp, Bruno W Sunnyvale, US 89 3416
Ho, Tsyr-Chyang Saratoga, US 18 1388
Horowitz, Mark A Menlo Park, US 159 7367
Kim, Jun Los Altos Hills, US 154 3290
Lau, Benedict Chung-Kwong San Jose, US 13 747
Sidiropoulos, Stefanos Palo Alto, US 96 3620
Stark, Donald C Palo Alto, US 102 3412
Vu, Roxanne San Jose, US 29 1050
Yu, Leung Santa Clara, US 33 1501
Zerbe, Jared LeVan Woodside, US 26 1281

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