CS5467-ISZ データシートの表示（PDF） - Cirrus Logic

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CS5467-ISZ

Four-channel Power / Energy IC

Cirrus Logic 

CS5467

8.2.7 Peak Current (I1PEAK, I2PEAK ) and Peak Voltage (V1PEAK, V2PEAK )

Address: 18 (I1PEAK), 19 (V1PEAK), 22 (I2PEAK), 23 (V2PEAK)

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

Peak current, I1PEAK (I2PEAK) and peak voltage, V1PEAK (V2PEAK) are the instantaneous current and voltage

samples with the greatest magnitude detected during the last low-rate interval. These are two's complement

values in the range of -1.0 ≤ value < 1.0, with the binary point to the right of the MSB.

8.2.8 Apparent Power (S1, S2)

Address: 20 (S1), 24 (S2)

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

Apparent power S1 (S2) is the product of V1RMS and I1RMS (V2RMS and I2RMS), These are two's complement

values in the range of 0 ≤ value < 1.0, with the binary point to the right of the MSB.

8.2.9 Power Factor (PF1, PF2)

Address: 21 (PF1), 25 (PF2)

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

Power factor is calculated by dividing active power by apparent power. The sign is determined by the active

power sign. These are two's complement values in the range of -1.0 ≤ value < 1.0, with the binary point to the

right of the MSB.

8.2.10 Temperature (T) – Address: 27

MSB

LSB

-(27) 26

25

24

23

22

21

20

..... 2-10 2-11 2-12 2-13 2-14 2-15 2-16

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 (oC), with the binary point to the right of bit 16.

T can be rescaled by the application using the TGAIN and TOFF registers.

8.2.11 Active, Apparent, and Reactive Energy Pulse Outputs (EPULSE , SPULSE , QPULSE )

Address: 29 (EPULSE), 30 (SPULSE), 31 (QPULSE)

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

These drive the pulse outputs when configured to do so. These are two's complement values in the range of

-1.0 ≤ value < 1.0, with the binary point to the right of the MSB. Refer to 4.8 Power and Energy Results on

page 16.

DS714F1

31

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