Invention Application
- Patent Title: Address Bit Dropping to Create Compacted Pipe Address for a Memory Controller
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Application No.: US17353371Application Date: 2021-06-21
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Publication No.: US20220342805A1Publication Date: 2022-10-27
- Inventor: Steven Fishwick
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Main IPC: G06F12/02
- IPC: G06F12/02 ; G06F12/1018 ; G06F12/06 ; G06F13/16

Abstract:
In an embodiment, a system may support programmable hashing of address bits at a plurality of levels of granularity to map memory addresses to memory controllers and ultimately at least to memory devices. The hashing may be programmed to distribute pages of memory across the memory controllers, and consecutive blocks of the page may be mapped to physically distant memory controllers. In an embodiment, address bits may be dropped from each level of granularity, forming a compacted pipe address to save power within the memory controller. In an embodiment, a memory folding scheme may be employed to reduce the number of active memory devices and/or memory controllers in the system when the full complement of memory is not needed.
Public/Granted literature
- US11714571B2 Address bit dropping to create compacted pipe address for a memory controller Public/Granted day:2023-08-01
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