Cirrus-logic CS5463 Manuel d'utilisateur télécharger pdf (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

-1

-2

-3

-4

-5

-6

-7

.....

-17

-18

-19

-20

-21

-22

-23

MSB LSB

-(2

-1

-2

-3

-4

-5

-6

-7

.....

-17

-18

-19

-20

-21

-22

-23

MSB LSB

-1

-2

-3

-4

-5

-6

-7

.....

-17

-18

-19

-20

-21

-22

-23

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 45 46

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Cirrus-logic CS5463 Manuel d'utilisateur Page 32

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