Smart Battery System Manager Specification, version 1.0

Smart Battery System Manager SpecificationreservedOptionalMfgFunction4OptionalMfgFunction3OptionalMfgFunction2OptionalMfgFunction1r/wr/wr/wr/wSmart Battery Functions4.5.3. Smart Battery System Manager Command InterceptsIn order to preserve bandwidth on the system host SMBus, the SBSM may intercept and respond directly tocommands directed to either the Smart Battery or the Smart Battery Charger. When an individual battery ispowering the system or is being charged or whenever individual battery data is desired, the SBSM relaysthe command to the battery and produces the requested data in the most efficient manner possible. TheSBSM may optionally pass Smart Battery Charger commands through to the charger in the most efficientmeans possible.The SBSM typically intercepts commands directed to the battery or charger whenever simultaneouscharging, simultaneous discharging, or a combination of charging and discharging is taking place in thebattery system. In this case, the SBSM will rely either on cached composite data values or it will have togenerate composite data in real time. During these situations, the SMBus for both the battery and chargerare invisible to the system host.For instance, the SBSM may intercept the SBC ChargerMode() command when in simultaneous chargingmode and make appropriate composition of the charging status. The composite data returned duringsimultaneous discharge should adhere to the relevant SBS specification. The method of data composition isdetermined by the OEM implementation.SBS Implementers Forum Page 11 Revision 1.0