cs5467 Cirrus Logic, Inc., cs5467 Datasheet - Page 31

• Manufacturer Part Number: cs5467
• Description: Four-channel Power / Energy Ic
• Manufacturer: Cirrus Logic, Inc.

8.2.7 Peak Current (I1
8.2.8 Apparent Power (S1, S2)
8.2.9 Power Factor (PF1, PF2)
8.2.10 Temperature (T)
8.2.11 Active, Apparent, and Reactive Energy Pulse Outputs (E
DS714F1
MSB
MSB
MSB
MSB
-(2
-(2
-(2
-(2
-(2
0
0
0
7
0
)
)
)
)
)
Address: 18 ( I1
Peak current, I1
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.
Address: 20 ( S1 ), 24 ( S2 )
Apparent power S1 ( S2 ) is the product of V1
values in the range of 0 ≤ value < 1.0, with the binary point to the right of the MSB.
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.
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 (
T can be rescaled by the application using the T
Address: 29 ( E
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
page 16.
MSB
2
2
2
2
2
-1
-1
-1
-1
6
2
2
2
2
2
-2
-2
-2
-2
5
PULSE
PEAK
PEAK
2
2
2
2
2
-3
-3
-3
-3
4
PEAK
), 19 ( V1
–
), 30 ( S
( I2
Address: 27
PEAK
, I2
2
2
2
2
2
-4
-4
-4
-4
3
PEAK
PULSE
) and peak voltage, V1
PEAK
2
2
2
2
2
-5
-5
-5
-5
2
) and Peak Voltage (V1
), 22 ( I2
), 31 ( Q
2
2
2
2
2
-6
-6
-6
-6
1
PEAK
PULSE
RMS
2
2
2
2
2
), 23 ( V2
-7
-7
-7
-7
0
)
and I1
GAIN
PEAK
.....
.....
.....
.....
.....
and T
RMS
PEAK
( V2
( V2
OFF
PEAK
2
2
2
2
2
)
PEAK
-17
-17
-17
-10
-17
RMS
o
registers.
C), with the binary point to the right of bit 16.
PULSE ,
, V2
) are the instantaneous current and voltage
2
2
and I2
2
2
2
-18
-18
-18
-18
-11
PEAK
4.8 Power and Energy Results
S
RMS
2
2
2
2
2
PULSE ,
)
-19
-19
-19
-12
-19
), These are two's complement
2
2
2
2
2
-20
-20
-20
-13
Q
-20
PULSE
2
2
2
2
2
-21
-21
-21
-14
-21
)
CS5467
2
2
2
2
2
-22
-22
-22
-15
-22
LSB
LSB
LSB
LSB
LSB
2
2
2
2
2
on
-23
-23
-23
-16
-23
31