Tele_Vin; Tele_Vinr - Analog Devices LINEAR LT8491 Manual

2
I C REGISTER DESCRIPTIONS

TELE_VIN

2
I C REG ADDRESS BIT(S)
0x0E [15:0]
This register contains the most recently measured V
multiplied by 100 in an unsigned integer format. TELE_VIN can be converted to volts by casting it to a floating-point
value and dividing the result by 100.
Proper reporting of TELE_VIN requires that non-zero values are in the following telemetry configuration registers:
CFG_RDACI, CFG_RFBIN1, CFG_RFBIN2. The contents of these registers must match the hardware values on the PCB
to achieve the correct TELE_VIN values. When solar supply operation is detected, TELE_VIN will indicate 0x0000. In
this case, read V voltage from TELE_VINR instead. The reset default value of TELE_VIN is 0x0000 indicating that the
IN
voltage has not yet been measured. Reading 0xFFFF from TELE_VIN indicates one or more of the required configura-
tion registers was set to 0x0000.
Related Data Sheet Sections: Telemetry Operation, HW Config: Input Voltage Sensing and Modulation

TELE_VINR

2
I C REG ADDRESS BIT(S)
0x10 [15:0]
This register contains the most recently measured V
multi-plied by 100 in an unsigned integer format. TELE_VINR can be converted to volts by casting it to a floating-
point value and dividing the result by 100. During low power and V
TELE_VINR will not accurately represent the V
operation (see HW Config: DC Supply Powered Charging). When DC power supply operation is detected TELE_VINR
will indicate 0x0000. In this case, read V
0xFFFF indicating that the voltage has not yet been measured.
Related Data Sheet Sections: Telemetry Operation, HW Config: Solar Panel Powered Charging, HW Config: DC Supply
Powered Charging
UNITS FORMAT
Volts • 100 Unsigned Integer 27.42V = 0x0AB6 V
UNITS FORMAT
Volts • 100 Unsigned Integer 27.42V = 0x0AB6 V
voltage when the VINR pin is being pulled low for DC power supply
IN
voltage from TELE_VIN instead. The reset default value of TELE_VINR is
IN
For more information
EXAMPLES DESCRIPTION
voltage measured from the FBIR pin.
IN
voltage as measured at the FBIR pin. The value is in Volts
IN
EXAMPLES DESCRIPTION
voltage measured from the VINR pin.
IN
voltage as measured at the VINR pin. The value is in Volts
IN
pulsing, TELE_VINR reports the valley voltage.
IN
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LT8491
Rev. 0
33