CS5490 datasheet(48/56 Pages) APEX

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CS5490

DS982F2

6.6.45 Total Reactive Power (QSUM) – Page 16, Address 31

Default = 0

QSUM =QAVG

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.

6.6.46 DC Offset for Current (IDCOFF) – Page 16, Address 32

Default = 0

DC offset registers IDCOFF are initialized to zero on reset. During DC offset calibration, selected registers are

written with the inverse of the DC offset measured. The application program can also write the DC offset reg-

ister values. 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.

6.6.47 DC Offset for Voltage (VDCOFF) – Page 16, Address 34

Default = 0

DC offset registers VDCOFF are initialized to zero on reset. During DC offset calibration, selected registers are

written with the inverse of the DC offset measured. The application program can also write the DC offset reg-

ister values. It 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.

6.6.48 Gain for Current (IGAIN) – Page 16, Address 33

Default = 1.0

Gain register IGAIN is initialized to 1.0 on reset. During gain calibration, the IGAIN register is written with the

multiplicative inverse of the gain measured. This is an unsigned fixed-point value in the range of

 value  4.0, with the binary point to the right of the second 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

-(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

-(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

.....

2-16

2-17

2-18

2-19

2-20

2-21

2-22

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