Data Sheet

LTC9105

REGISTER MAP

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Rev. A | 18 of 22

Table 11. I2C Register Details (Continued)

Byte

Bit

Data

Access

Reset

Value

Description

4

6

vpoverflow

RO

0

Voltage/Power Overflow Status. If set, the voltage or power readback is an overflow

(the measurement was outside the full scale range of the ADC). Disregard the value in

voltage_power[13:0] when vpoverflow is set.

This field is updated with every ADC conversion.

4

5:0

voltage_power[13:8]

RO

0

Voltage/Power Telemetry MSB. Upper bits of the voltage or power telemetry. Combine with

voltage_power[7:0] for a complete voltage/power telemetry reading.

This field is updated with every ADC conversion.

5

7:0

voltage_power[7:0]

RO

0

Voltage/Power Telemetry LSB. Lower bits of the voltage or power telemetry. Combine with

voltage_power[13:8] for a complete voltage or power telemetry reading.

When padc_data is cleared, voltage_power contains a voltage reading, representing

9.955mV/LSB (14-bit) with an offset of 0x2000. Full scale range ±81.55V.

When padc_data is set, voltage_power contains a power reading, representing 20.20mW/LSB

(14-bit) with an offset of 0x2000. Full scale range ±165.5W.

All values are typical and assume RSNSP-SNSN = 50mΩ. This field is updated with every ADC

conversion.

Access Key:

R/W = Read/Write. Field can be read and written normally.

RO = Read Only. Field can be read normally. Writes to a "Read Only" field are ignored.

R/W1C = Read/Write-1-to-Clear. Field can be read normally. Bits that have '1' written to them are cleared. Bits that have '0' written to them are

unchanged.