Method and circuit for off chip driver control, and memory device using same
AssigneeMicron Technology, Inc.
InventorsGreg Blodgett, Christopher Morzano
Life of this patent
Estimating the term…
Abstract
An off chip driver impedance adjustment circuit includes a storage circuit adapted to receive and store a drive strength adjustment word. A counter circuit is coupled to the storage circuit to receive the drive strength adjustment word and develops a drive strength count responsive to the drive strength adjustment word. A programmable fuse code to preset the counter. An output driver circuit is coupled to the counter circuit to receive the drive strength count and is adapted to receive a data signal. The output driver circuit develops an output signal on an output responsive to the data signal and adjusts a drive strength as a function of the drive strength count.
Claims2
An off chip driver impedance adjustment circuit, comprising:
- a storage circuit adapted to receive and store a drive strength adjustment word;
- a counter circuit coupled to the storage circuit to receive the drive strength adjustment word and operable to develop a drive strength count responsive to the drive strength adjustment word, the counter circuit having a current value of the drive strength adjustment count set therein;
- and
- an output driver circuit coupled to the counter circuit to receive the drive strength count and being adapted to receive a data signal, the driver circuit operable to develop an output signal on an output responsive to the data signal and adjust a drive strength as a function of the drive strength count.
2-52. (canceled)
Dependencies are inferred from the claim text.