CS5490-ISZR View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS5490-ISZR

Two Channel Energy Measurement IC

Cirrus Logic 

CS5490

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

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

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

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

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

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

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

MSB

LSB

21

20

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

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

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

48

DS982F2

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