CS5490 datasheet(47/56 Pages) APEX

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CS5490

DS982F2

6.6.41 Power Factor (PF) – Page 16, Address 21

Default = 0x00 0000

Power factor (PF) is calculated by dividing active power (PAVG) by apparent power (S).

The sign is determined by the active power (PAVG) 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 TGAIN and TOFF registers.

6.6.43 Total Active Power (PSUM) – Page 16, Address 29

Default = 0

PSUM =PAVG

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 (SSUM) – Page 16, Address 30

Default = 0

SSUM =S

This is an unsigned value in the range of 0

value1.0, with the binary point to the right of the MSB.

MSB

LSB

-(20)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

-(27)26

.....

2-10

2-11

2-12

2-13

2-14

2-15

2-16

MSB

LSB

-(20)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

2-1

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

CS5490 数据表(PDF) 47 Page - Cirrus Logic

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CS5490 数据表(PDF) 47 Page - Cirrus Logic

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