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Slide15

AVSBus or adaptive voltage scaling bus is an extension of PMBus v1.3. It is an “Open Power” standard devised by the System Management Interface Forum (SMIF) of which Renesas is a member. With the competition having their own high-speed interface to connect to their x86 processors, the power community developed AVSBus as a competing proprietary-free open standard to facilitate point-to-point communication between a host processor and a controller at up to a 50 MHz bus speed. AVSBus has now become the de facto standard across many OEM driven microprocessor and network processor designs. By taking advantage of the high-speed bus interface, OEMs can now deliver power efficient processor solutions in the marketplace and minimize wasted energy associated with propagation delays, as illustrated on this slide, when using a standard PMBus approach. Renesas is a market leader with the AVSBus implementation available on the ISL68137 and ISL68134 controllers. As such, the Renesas solution has been implemented exclusively in several reference designs across multiple OEMs, spanning server and network processor designs.

PTM Published on: 2017-10-11