Device for controlling on die termination

Details Device for controlling on die termination Device for controlling on die termination

2008-03-11

2008-03-11

Cho, James H. (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S028000

Reexamination Certificate

active

07342412

ABSTRACT:
An on die termination (ODT) control device includes a latency block for buffering an ODT control signal to output a latency control signal by selecting one of a plurality of intermediate control signals, which are generated by sequentially delaying the buffered ODT control signal in synchronization with an internal clock, based on first latency information; an enable signal generation block for comparing a first control signal with a second control signal in response to the latency control signal to thereby produce an ODT enable signal based on the compared result; and an ODT block for controlling a termination impedance based on the ODT enable signal.

REFERENCES:
patent: 6420899 (2002-07-01), Crittenden et al.
patent: 6928007 (2005-08-01), Jin
patent: 7019555 (2006-03-01), Lee
patent: 2004/0100837 (2004-05-01), Lee
patent: 2004/0240298 (2004-12-01), Jin
patent: 2005/0212551 (2005-09-01), So et al.
patent: 2005/0225353 (2005-10-01), Kwon
patent: 2004-310981 (2004-11-01), None

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