7.6.1.3 Bus Voltage Register (Address = 2h) [reset = 0000h]

The bus voltage register is shown in Table 7-6.

Return to the Summary Table.

Table 7-6. Bus Voltage Register Field Descriptions

Bit

Field

Type

Reset

Description

15

Reserved

R

0b

This bit returns Zero as common mode voltage is only positive

14-0

VBUS

R

0000h

These bits readout the bus voltage of the system

7.6.1.4 POWER Register (Address = 3h) [reset = 0000h]

The power register is shown in Table 7-7.

Return to the Summary Table.

Table 7-7. POWER Register Field Descriptions

Bit

Field

Type

Reset

Description

15-0

POWER

R

0000h

This bit returns a calculated value of power in the system.

This is an unsigned result.

7.6.1.5 CURRENT Register (Address = 4h) [reset = 0000h]

CURRENT is shown in Table 7-8.

Return to the Summary Table.

Table 7-8. CURRENT Register Field Descriptions

Bit

Field

Type

Reset

Description

15-0

CURRENT

R

0000h

Calculated current output in Amperes. Two's complement value.

7.6.1.6 Calibration Register (Address = 5h) [reset = 0000h]

The calibration register shown in Table 7-9 must be programmed to receive valid current and power results after

initial power up or power cycle events.

This register provides the device with the value of the shunt resistor that was present to create the measured

differential voltage. It also sets the resolution of the Current Register. Programming this register sets the

Current_LSB and the Power_LSB.

Return to the Summary Table.

Table 7-9. Calibration Register Field Descriptions

Bit

Field

Type

Reset

Description

15

Reserved

R

0h

14-0

SHUNT_CAL

R/W

0000h

Programmed value needed for doing the shunt voltage to current

conversion.

7.6.1.7 Mask/Enable Register (Address = 6h) [reset = 0000h]

The Mask/Enable Register is shown in Table 7-10.

Return to the Summary Table.

INA236

SBOSA81 – MAY 2021

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