16 peak current and peak voltage register, Cs5463, 14 temperature register ( t ) – Cirrus Logic CS5463 User Manual
Page 31: 16 peak current and peak voltage register ( i
CS5463
DS678F3
31
IHPF (VHPF)
Enables the high-pass filter on the current (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
E3MODE[1:0]
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
register will be updated periodically.
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 (
o
C). 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 ( Q
AVG
, 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 (Q
AVG
) 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, Q
AVG
1.0, with the binary point to the
right of the MSB.
6.1.16 Peak Current and Peak Voltage Register ( I
peak
,
V
peak
)
Address: 22 (Peak Currect) and 23 (Peak Voltage)
The Peak Current (I
peak
) and Peak Voltage (V
peak
) 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
I
peak
, V
peak
1.0, with the binary point to the right of the MSB.
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
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