JAJSMF5B september 2022 – june 2023 TPS25990
PRODUCTION DATA
The READ_TEMP_AVG command is a manufacturer-specific command that reports 10-bit average values of device temperature or auxiliary input voltage telemetry based on the state of Bit[7] in the ADC_CONFIG_2 register. If this bit is set high, the READ_TEMP_AVG command reports average values of auxiliary input voltage telemetry, otherwise average values of device temperature telemetry. Default state of Bit[7] in the ADC_CONFIG_2 register is low. Data are updated with each data cycle, reducing averaged telemetry read latency. Average count can be programmed through PMBus® using Bit[2:0] in the PK_MIN_AVG register. The contents of READ_TEMP_AVG register can be reset to zero (0x0000h) by setting Bit[6] in the PK_MIN_AVG register high.
This command uses the PMBus® read word protocol.
Follow the PMBus® DIRECT format conversion using the coefficients in Table 8-67 and Equation 19, to convert the hexadecimal data read from this register into a real-world value in °C or V.
| Bit | Bit[7] in the ADC_CONFIG_2 register | Name |
Description |
Minimum Value |
Maximum Value |
Access |
|---|---|---|---|---|---|---|
|
15:0 |
1 |
READ_VAUX_AVG |
Value measured for average auxiliary input voltage |
0x0000 (0 V) |
0x03FF (1.95 V) |
Read |
|
0 |
READ_TEMP_AVG |
Value measured for average device temperature | 0x0000 (-229 °C) | 0x03FF (501 °C) |
Make sure to use the DIRECT format calculation coefficients correctly based on the state of Bit[7] in the ADC_CONFIG_2 register.