Cirrus Logic CS5463 - Manual (Page 32)

CS5463
32 DS678F3
6.1.17 Reactive Power Register ( Q
Trig
)
Address: 24
The Reactive Power (Q
Trig
) is calculated using trigonometric identities. (See Section 4.3 Power Measurements
on page 14). The value is represented in unsigned notation and in the range of 0
 S  1.0, with the binary point
to the right of the MSB.
6.1.18 Power Factor Register ( PF )
Address: 25
Power Factor is calculated by dividing the Active (Real) Power by Apparent Power. The value is represented in
two's complement notation and in the range of -1.0
 PF  1.0, with the binary point to the right of the MSB.
6.1.19 Apparent Power Register ( S )
Address: 27
Apparent power (S) is the product of the V
RMS
and I
RMS
, The value is represented in unsigned notation and in
the range of 0
 S  1.0, with the binary point to the right of the MSB.
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
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