User Manual

CS5463
DS678F3 33
6.1.20 Control Register ( Ctrl )
Register Address: 28
Default = 0x000000
STOP Terminates the auto-boot sequence.
0 = Normal (default)
1 = Stop sequence
INTOD Converts INT
output pin to an open drain output.
0 = Normal (default)
1 = Open drain
NOCPU Saves power by disabling the CPUCLK pi n.
0 = Normal (default)
1 = Disables CPUCLK
NOOSC Saves power by disabling the crystal oscillator.
0 = Normal (default)
1 = Disabling oscillator circuit
6.1.21 Harmonic Active Power Register ( P
H
)
Address: 29
The Harmonic Active Power (P
H
) is calculated by subtracting the Fundamental Active Power from the Active
(Real) Power. The value is represented in two's complement notation and in the range of -1.0
 P
H
 1.0, with
the binary point to the right of the MSB.
6.1.22 Fundamental Active Power Register ( P
F
)
Address: 30
The Fundamenta l Active Po wer (P
F
) is calculated by performing a discrete Fourier transform ( DFT) at the r ele-
vant frequency on the V and I channels. The r esults are multiplied to yield fundamental powe r. The value is rep-
resented in two's complement notation and in the range of -1.0
 P
H
 1.0, with the binary point to the right of
the MSB.
23 22 21 20 19 18 17 16
15 14 13 12 11 10 9 8
STOP
76543210
INTOD NOCPU NOOSC
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