Intel® Server System Server System "Emerald Ridge ... - CTL

Intel® Server System "Emerald Ridge” Integrated BaseboardManagement Controller EPSAppendix A: OEM SDR RecordsByteName6 Temperature Info [7] – Reserved[6] – Domain MaximumDescriptionIf the domain maximum bit is set, then this sub-record provides themaximum nominal value that the fan control domain will be set to. Inthis case, multiple control pairs may be provided and are interpretedas a table of maximum PWM values for the associated temperature.[5:3] – Negative Hysteresis[2:0] – Positive HysteresisThis hysteresis is used only in the temperature fan control module.Behavior is unpredictable if multiple sub-records contributing to thesame fan control domain are configured as domain maximums.7 Control Pair Count (N) Count of temperature / control value pairs8 Temperature 1 The temperature at which a new contribution is required9 PWM % Value 1 PWM value (in %) to use for the fan control domain10-M Temp / PWM 2-N Up to N pairs of temperature / PWM values. These entries should bein order of increasing temperature, from low to high.M = Total number of bytes in this sub-record. Upper bound on thisvalue is 47; however this is constrained by the total number of bytesallowed for an OEM SDR record (64, including a 5 byte header).Temp/PWM pair’s minimal temperature resolution is 1° C. Integermultiplier of 1° C is allowed.When a multiple of 1C between two pairs are provided in SDR, FWlinearly interprets the PWM values at each 1° C inc rement. Forexample if the two pairs of SDR values are 25° C, 3 0% and 28° C,30%, FW interprets it into 25° C /30%, 26° C /30%, 27° C /30% and28° C /30%.The interpreted PWM values are rounded to the next higher integerPWM value if needed. For example, if an interpreted value is 53.3%,a 54% PWM will be usedTable 91. Clamp Type Temperature Sensor Sub-recordClamp type Temperature Sensor sub-recordByteNameDescription0 Sensor Owner ID [7:1] – 7-bit I 2 C slave address, or 7-bit system software ID[0]0b = ID is IPMB slave address1b = Reserved1 Temperature Sensor Number Sensor number of the temperature sensor associated with the fancontrol domain.2 Temp Sensor Failure ControlValueThis is the incremental PWM contribution (% value – 0-100) added tothe current PWM being driven for the applicable fan domain. Thisshould be used if the given temperature sensor is in update-inprogressstate (indicating no update has occurred). If the sensor is ina disabled state, then this sub-record does not contribute to the fanspeed control.3 Sleep Control Offset/Value Signed PWM offset (% value – 0-100) or value to use when thesystem is in S1 sleep state. This offset/value is applied as describedin the S1 sleep state support parameter description.Revision 1.0Intel ® Confidential 169