Memory modules having daisy chain wiring configurations and filters
AssigneeMicron Technology, Inc.
InventorRoy Greeff
Life of this patent
Estimating the term…
Abstract
Examples described include memory units coupled to a controller using a daisy chain wiring configuration. A filter located between a first memory unit and the controller attenuates a particular frequency, which may improve ringback in a signal received at the memory units. In some examples, a quarter-wavelength stub is used to implement the filter. In some examples, signal components at 800 MHz may be attenuated by a stub, which may improve ringback.
Claims21
A memory module comprising:
- a plurality of memory units;
- a daisy chain coupled to each of the plurality of memory units in series including a first memory unit and configured to transmit signals to the plurality of memory units;
- and
- a filter coupled to the daisy chain prior to the first memory unit, the filter configured to attenuate signals at a selected frequency.
A memory system comprising:
- an electronic device generating a signal;
- a plurality of memory units;
- a daisy chain coupling the electronic device to the plurality of memory units in series including a first memory unit;
- and
- a filter coupled to the daisy chain between the electronic device and the first memory unit.
A method of reducing ringback in a signal transmitted from an electronic device to a plurality of memory devices through a daisy chain, the memory devices including a first memory device connected directly to the electronic device, the method comprising:
- filtering the signal coupled from the electronic device to the first memory device.
Dependencies are inferred from the claim text.