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1. (WO2018089159) METHODS AND APPARATUS FOR PROVIDING ACCESS TO PERIPHERAL SUB-SYSTEM REGISTERS

Pub. No.:    WO/2018/089159    International Application No.:    PCT/US2017/056197
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Thu Oct 12 01:59:59 CEST 2017
IPC: G06F 13/40
G06F 13/42
Applicants: APPLE INC.
Inventors: GARG, Saurabh
SANGHI, Karan
PETKOV, Vladislav
SOLOTKE, Richard
Title: METHODS AND APPARATUS FOR PROVIDING ACCESS TO PERIPHERAL SUB-SYSTEM REGISTERS
Abstract:
Methods and apparatus for isolation of sub-system resources (such as clocks, power, and reset) within independent domains. In one embodiment, each sub-system of a system has one or more dedicated power and clock domains that operate independent of other sub-system operation. For example, in an exemplary mobile device with cellular, WLAN and PAN connectivity, each such sub-system is connected to a common memory mapped bus function, yet can operate independently. The disclosed architecture advantageously both satisfies the power consumption limitations of mobile devices, and concurrently provides the benefits of memory mapped connectivity for high bandwidth applications on such mobile devices.