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_Temperature Readings Register_

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Temperature Readings Register

The temperature registers provide the current, maximum (from power-up) and minimum (from power-up) for the processor and PCB for Zynq processor, and for the Slave processor.

These registers are only available on Xilinx Generation 5 platforms, and are periodically populated by the motherboard core application, which only runs in Petalinux and BareMetal. For other operating systems, refer to the naibrd Software Support Kit (SSK) naibsp_system_Monitor_Temperature_Get() routine to manually retrieve the temperature (NOTE: this feature is typically utilized for development/factory use only; contact the factory for additional details on potential use, if required).

Function: Specifies the Measured Temperatures on Motherboard.

Type: signed byte (8-bits) for each temperature reading - Six (6) 32-bit words

Data Range: 0x0000 0000 to 0xFFFF FFFF

Read/Write: R

Initialized Value: Value corresponding to the measured temperatures based on the table below.

Operational Settings: The 8-bit temperature readings are signed bytes. For example, if the following register contains the value 0x6955 E7D8:

Example:

Word 1 (Current UltraScale & Host Temperatures)

D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16
UltraScale Core TemperatureUltraScale PCB Temperature
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
Host Core TemperatureHost PCB Temperature

The values would represent the following temperatures:

Temperature MeasurementsData BitsValueTemperature (Celsius)
UltraScale Core TemperatureD31:D240x69+105°
UltraScale PCB TemperatureD23:D160x55+85°
Host Core TemperatureD15:D80xE7-25°
Host PCB TemperatureD7:D00xD8-40°
Temperature Readings

Word 1 (Current UltraScale & Host Temperatures)

D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16
UltraScale Core TemperatureUltraScale PCB Temperature
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
Host Core TemperatureHost PCB Temperature

Word 2 (Max Host Temperatures)

D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16
0x000x00
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
Max Host Core TemperatureMax Host PCB Temperature

Word 3 (Max UltraScale & Min Host Temperatures)

D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16
Max UltraScale Core TemperatureMax UltraScale PCB Temperature
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
Min Host Core TemperatureMin Host PCB Temperature00

Word 4 (Reserved)

D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16
0x000x00
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
0x000x00

Word 5 (Min UltraScaleTemperatures)

D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16
Min UltraScale Core TemperatureMin UltraScale PCB Temperature
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
0x000x00

Word 6 (Reserved)

D31D30D29D28D27D26D25D24D23D22D21D20D19D18D17D16
0x000x00
D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
0x000x00
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