Cs5484, 39 active power 1 (p1, Page 16, address 5 – Cirrus Logic CS5484 User Manual
Page 52
CS5484
52
DS981F3
6.6.36 Instantaneous Current 1 (I1) – Page 16, Address 2
Default = 0x00 0000
I1 contains instantaneous current measurements for current channel 1.
This is a two's complement value in the range of -1.0
value1.0, with the binary point to the right of the MSB.
6.6.37 Instantaneous Voltage 1 (V1) – Page 16, Address 3
Default = 0x00 0000
V1 contains instantaneous voltage measurements for voltage channel 1.
This is a two's complement value in the range of -1.0
value 1.0, with the binary point to the right of the MSB.
6.6.38 Instantaneous Active Power 1 (P1) – Page 16, Address 4
Default = 0x00 0000
P1 contains instantaneous power measurements for current and voltage channels 1.
Values in registers I1 and V1 are multiplied to generate this value. This is a two's complement value in the
range of -1.0
value 1.0, with the binary point to the right of the MSB.
6.6.39 Active Power 1 (P1
AVG
) – Page 16, Address 5
Default = 0x00 0000
Instantaneous power is averaged over each low-rate interval (SampleCount samples) and then added with
power offset (P
OFF
) to compute active power (P
AVG
).
This is a two's complement value in the range of -1.0
value 1.0, with the binary point to the right of the MSB.
MSB
LSB
-(2
0
)
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
.....
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
2
-23
MSB
LSB
-(2
0
)
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
.....
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
2
-23
MSB
LSB
-(2
0
)
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
.....
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
2
-23
MSB
LSB
-(2
0
)
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
.....
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
2
-23