Cirrus Logic CS5467 - Manual (Page 31)

CS5467
DS714F3 31
8.2.7 Peak Current (I1
PEAK
, I2
PEAK
) and Peak Voltage (V1
PEAK
, V2
PEAK
)
Address: 18 (I1
PEAK
), 19 (V1
PEAK
), 22 (I2
PEAK
), 23 (V2
PEAK
)
Peak current, I1
PEAK
(I2
PEAK
) and peak voltage, V1
PEAK
(V2
PEAK
) 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)
Apparent power S1 (S2) is the product of V1
RMS
and I1
RMS
(V2
RMS
and I2
RMS
), 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)
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
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 ( o C), with the binary point to the right of bit 16.
T can be rescaled by the application using the T
GAIN
and T
OFF
registers.
8.2.11 Active, Apparent, and Reactive Energy Pulse Outputs (E
PULSE ,
S
PULSE ,
Q
PULSE
)
Address: 29 (E
PULSE
), 30 (S
PULSE
), 31 (Q
PULSE
)
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.
MSB LSB
-(2
0
) 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
0
) 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 0 ) 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
7
) 2
6
2
5
2
4
2
3
2
2
2
1
2
0 ..... 2
-10
2
-11
2
-12
2
-13
2
-14
2
-15
2
-16
MSB LSB
-(2 0 ) 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