| US 7,516,281 B2 | ||
| On-die termination snooping for 2T applications in a memory system implementing non-self-terminating ODT schemes | ||
| Paul A. LaBerge, Shoreview, Minn. (US) | ||
| Assigned to Micron Technology, Inc., Boise, Id. (US) | ||
| Filed on May 25, 2004, as Appl. No. 10/853,319. | ||
| Prior Publication US 2005/0268059 A1, Dec. 01, 2005 | ||
| Int. Cl. G06F 13/00 (2006.01) | ||
| U.S. Cl. 711—154 [711/105; 713/500; 365/189.01] | 27 Claims |
| 1. A method for controlling the on-die termination of a memory system having a plurality of memory devices, a command bus,
and a data bus, said method comprising:
transmitting a first group of command signals and a second group of command signals on said command bus, wherein command signals
within said first group are asserted for a single clock pulse and command signals within said second group are asserted for
two consecutive clock pulses, and wherein a valid command comprises a command signal from said first group and a command signal
from said second group;
snooping said command bus, said snooping being responsive to only command signals within said first group of command signals;
and
enabling the on-die termination of at least one of said plurality of memory devices, said enabling responsive to said snooping.
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