CS5463 datasheet(31/44 Pages) CIRRUS

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CS5463

DS678PP1

VHPF

Enables the High-pass Filter on the voltage channel.

0 = High-pass filter disabled (default)

1 = High-pass filter enabled

Note: When either IHPF or VHPF are enabled, but not both, an all pass filter is applied to the

opposite channel for phase-matching.

IIR

Enables the IIR compensation filters.

0 = IIR compensation filters enabled (default)

1 = IIR compensation filters disabled

E3MODE1:0

E3 Output Mode

00 = Reactive Power (default)

01 = PFMON

10 = Voltage sign

11 = Apparent Power

POS

Positive Energy Only. Negative energy pulses on E1 are suppressed. However, it will NOT sup-

press negative P register results.

AFC

Enables automatic line frequency measurement and sets the frequency of the local sine/cosine

generator used in fundamental/harmonic measurements. When AFC is enabled, the Epsilon

6.1.14 Temperature Register ( T )

Address: 19

T contains measurements from the on-chip temperature sensor. Measurements are performed during continu-

ous conversions, with the default the Celsius scale (oC). The value is represented in two's complement notation

and in the range of -128.0

≤ T < 128.0, with the binary point to the right of the eighth MSB.

6.1.15 Average and Instantaneous Reactive Power Register ( QAVG , Q )

Address: 20 (Average Reactive Power) and 21 (Instantaneous Reactive Power)

The Instantaneous Reactive Power (Q) is the product of the voltage, shifted 90 degrees, and the current. The

Average Reactive Power (QAVG) is Q averaged over N samples. The results are signed values with. The value

is represented in two's complement notation and in the range of -1.0

< Q, QAVG< 1.0, with the binary point to the

right of the MSB.

6.1.16 Peak Current and Peak Voltage Register ( Ipeak , Vpeak )

Address: 22 (Peak Currect) and 23 (Peak Voltage)

The Peak Current (Ipeak) and Peak Voltage (Vpeak) registers contain the instantaneous current and voltage with

the greatest magnitude detected during the last computation cycle. The value is represented in two's comple-

ment notation and in the range of -1.0

≤ Ipeak,Vpeak < 1.0, with the binary point to the right of the MSB.

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

-(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

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