Datasheet

ADM1276 Data Sheet

Rev. C | Page 42 of 48

PEAK_VOUT

Code: 0xD2, read/write word. Value after reset: 0x0000 (writing 0x0000 clears the peak value).

Table 36. Bit Descriptions for PEAK_VOUT Command

Bits Bit Name Settings Description

[15:12] Reserved 0000 Always reads as 0000.

[11:0] PEAK_VOUT Returns the peak VOUT voltage since the register was last cleared.

PMON_CONTROL

Code: 0xD3, read/write byte. Value after reset: 0x01.

Table 37. Bit Descriptions for PMON_CONTROL Command

Bits Bit Name Settings Description

[7:1] Reserved 0000000 Always reads as 0000000.

[0] Convert 0 Power monitor is not running.

Default. Start the sampling of current and voltage with the power monitor. In single shot

mode, this bit clears itself after one complete cycle. In continuous mode, this bit must

be written to 0 to stop sampling.

PMON_CONFIG

Code: 0xD4, read/write byte. Value after reset: 0xAF.

Modifying the power monitor settings while the power monitor is sampling is not supported. The power monitor must be stopped before

any setting in Table 38 is changed to ensure correct operation and to prevent the generation of any potential spurious data and status alerts.

Table 38. Bit Descriptions for PMON_CONFIG Command

Bits Bit Name Settings Description

[7]

PMON_MODE

This setting selects single shot sampling mode.

1 Default. This setting selects continuous sampling mode.

[6] VOUT_SELECT 0 Default. The power monitor samples the input voltage on the SENSE+ pin and IOUT.

The power monitor samples the input voltage on the SENSE+ pin, IOUT, and the

voltage on the VOUT pin.

[5] VRANGE 0 Sets the voltage input range from 0 V to 6 V (low input voltage range).

1 Default. Sets the voltage input range from 0 V to 20 V (high input voltage range).

[4] Reserved 0 Reserved. This bit must always be written as 0.

[3] Reserved 1

Default. This bit must be set to 1 for the power monitor current sense to operate

correctly.

[2:0] Averaging 000 Disables sample averaging for current and voltage.

001 Sets sample averaging for current and voltage to two samples.

010 Sets sample averaging for current and voltage to four samples.

011 Sets sample averaging for current and voltage to eight samples.

100

Sets sample averaging for current and voltage to 16 samples.

101 Sets sample averaging for current and voltage to 32 samples.

110 Sets sample averaging for current and voltage to 64 samples.

111 Default. Sets sample averaging for current and voltage to 128 samples.