Arbitration system and method for memory responses in a hub-based memory system
AssigneeRound Rock Research, LLC
InventorsJames Meyer, Cory Kanski
Life of this patent
Estimating the term…
Abstract
A memory hub includes a local queue that stores local memory responses, a bypass path that passes downstream memory responses, and a buffered queue coupled to the bypass path that stores downstream memory responses from the bypass path. A multiplexer is coupled to the local queue, buffered queue, and the bypass path and outputs responses from a selected one of the queues or the bypass path responsive to a control signal. Arbitration control logic is coupled to the multiplexer and the queues and develops the control signal to control the response output by the multiplexer.
Claims10
1-38. (canceled)
A method of processing and forwarding memory responses in a memory system including a plurality of memory modules, each memory module including a memory hub coupled to memory devices, and the method comprising:
- storing local memory responses from the memory devices;
- storing downstream memory responses from downstream memory modules;
- applying in each hub an independent arbitration algorithm to determine an order in which the stored memory responses are forwarded to an upstream memory module;
- and
- forwarding the memory responses upstream according to the determined order.
Dependencies are inferred from the claim text.