Cs5490, 43 total active power (p, Page 16, address 29 – Cirrus Logic CS5490 User Manual
Page 48: 44 total apparent power (s, Page 16, address 30
CS5490
48
DS982F3
6.6.41 Power Factor (PF) – Page 16, Address 21
Default = 0x00 0000
Power factor (PF) is calculated by dividing active power (P
AVG
) by apparent power (S).
The sign is determined by the active power (P
AVG
) sign.
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.
6.6.42 Temperature (T) – Page 16, Address 27
Default = 0
T contains results from the on-chip temperature measurement.
By default, T uses the Celsius scale and is a two's complement value in the range of -128.0
value 128.0
(°C), with the binary point to the right of bit 16.
T can be rescaled by the application using the T
GAIN
and T
OFF
registers.
6.6.43 Total Active Power (P
SUM
)
–
Page 16, Address 29
Default = 0
P
SUM
= 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.
6.6.44 Total Apparent Power (S
SUM
)
–
Page 16, Address 30
Default = 0
S
SUM
= S
This is an unsigned value in the range of 0
value1.0, 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
7
)
2
6
2
5
2
4
2
3
2
2
2
1
2
0
.....
2
-10
2
-11
2
-12
2
-13
2
-14
2
-15
2
-16
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
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