Datasheet

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ADM1276 Data Sheet

Rev. C | Page 40 of 48

READ_EIN

Code: 0x86, block read. Value after reset: 0x06, 0x0000, 0x00, 0x000000.

Table 25. Byte Descriptions for READ_EIN Command

Byte Byte Name Value Description

[0] Byte count 0x06

Always reads as 0x06, the number of data bytes that the block read command

should expect to read.

[2:1] Energy count 0x0000

Energy accumulator value in direct format. Byte 2 is the high byte, and Byte 1 is the

low byte. Internally, the energy accumulator is a 24-bit value, but only the most

significant 16 bits are returned with this command. Use the READ_EIN_EXT

command to access the nontruncated version.

[3] Rollover count 0x00

Number of times that the energy count has rolled over from 0x7FFF to 0x0000. This

is a straight 8-bit binary value.

[6:4]

Sample count

0x000000

This is the total number of PIN samples acquired and accumulated in the energy

count accumulator. Byte 6 is the high byte, Byte 5 is the middle byte, and Byte 4 is

the low byte. This is a straight 24-bit binary value.

READ_VIN

Code: 0x88, read word. Value after reset: 0x0000.

Table 26. Bit Descriptions for READ_VIN Command

Bits Bit Name Settings Description

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

[11:0] VIN Input voltage from the SENSE+ pin measurement, expressed in ADC codes.

READ_VOUT

Code: 0x8B, read word. Value after reset: 0x0000.

Table 27. Bit Descriptions for READ_VOUT Command

Bits Bit Name Settings Description

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

[11:0] VOUT Output voltage from the VOUT pin measurement, expressed in ADC codes.

READ_IOUT

Code: 0x8C, read word. Value after reset: 0x0000.

Table 28. Bit Descriptions for READ_IOUT Command

Bits Bit Name Settings Description

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

[11:0] IOUT Output current from the measurement through the sense resistor, expressed in ADC codes.

READ_PIN

Code: 0x97, read word. Value after reset: 0x0000.

Table 29. Bit Descriptions for READ_PIN Command

Bits Bit Name Settings Description

[15]

Reserved

Always reads as 0.

[14:0] PIN Input power from the VIN × IOUT calculation.

PMBUS_REVISION

Code: 0x98, read byte. Value after reset: 0x22.

Table 30. Bit Descriptions for PMBUS_REVISION Command

Bits Bit Name Settings Description

[7:4] Part I revision 0010 Always reads as 0010, PMBus Specification Part I, Revision 1.2.

[3:0] Part II revision 0010 Always reads as 0010, PMBus Specification Part II, Revision 1.2.