Datasheet

ADM1275 Data Sheet

Rev. D | Page 42 of 48

Byte Byte Name Value Description

9 Character 9 0x31 or “1” Always reads as 0x31 on the ADM1275-1.

0x32 or “2” Always reads as 0x32 on the ADM1275-2.

0x33 or “3” Always reads as 0x33 on the ADM1275-3.

MFR_REVISION

Code: 0x9B, block read. Value after reset: 0x01 + ASCII “1”.

Table 32. Bit Descriptions for MFR_REVISION Command

Byte Byte Name Value Description

0 Byte count 0x01

Always reads as 0x01, the number of data bytes that the block read command

should expect to read.

Character 1

0x31 or “1”

Always reads as 0x31, Revision 1 of the ADM1275.

PEAK_IOUT

Code: 0xD0, read/write word. Value after reset: 0x0000 (writing 0x0000 clears the peak value).

Table 33. Bit Descriptions for PEAK_IOUT Command

Bits Bit Name Settings Description

[15:12]

Reserved

0000

Always reads as 0000.

[11:0] PEAK_IOUT Returns the peak IOUT current since the register was last cleared.

PEAK_VIN

Code: 0xD1, read/write word. Value after reset: 0x0000 (writing 0x0000 clears the peak value).

Table 34. Bit Descriptions for PEAK_VIN Command

Bits Bit Name Settings Description

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

[11:0] PEAK_VIN Returns the peak VIN voltage since the register was last cleared.

PEAK_VOUT

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

This command is supported on the ADM1275-1 and the ADM1275-3. The ADM1275-2 does not have a VOUT pin.

Table 35. 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: 0x00.

Table 36. Bit Descriptions for PMON_CONTROL Command

Bits Bit Name Settings Description

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

0 CONVERT 0 Default. Power monitor is not running.

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.