9 cycle count (n) – address: 19, 12 wideband reactive power (q1wb , q2wb ), Cs5464 – Cirrus Logic CS5464 User Manual
Page 36
CS5464
36
DS682F3
8.3.9 Cycle Count (N)
–
Address: 19
Default = 4000
Determines the number of output word rate (OWR) samples to use in calculating low-rate results. Cycle Count
(N) is an integer in the range of 10 to 8,388,607. Values less than 10 should not be used.
8.3.10 Channel Select Level (Ichan
level
)
–
Address: 18
Default = 1.02 (minimum difference = 2%)
Sets the hysteresis level for energy channel selection. If the most positive value of P1
AVG
and P2
AVG
(I1
RMS
and I2
RMS
) is greater than
Ichan
LEVEL
multiplied by the least-positive value, and is also greater than
Ichan
MIN
, the channel associated with the most-positive value will be used. If not, the previous channel
selection will remain
.
Ichan
LEVEL
is an unsigned fixed-point value in the range of 0
value 2.0, with the bi-
nary point to the left of the MSB. A value of 1.0 or less
indicates no hysteresis will be used
.
8.3.11 Channel Select Minimum Amplitude (E
MIN
or Irms
MIN
)
–
Address: 24
Default = 0.003
Sets the minimum level for energy channel selection. If the most positive value of P1
AVG
and P2
AVG
(I1
RMS
and
I2
RMS
) is less than
Ichan
MIN
then the previous channel selection will remain
in use. It is a two's complement
value in the range of -1.0
value 1.0, with the binary point to the right of the MSB. Negative values are not
used.
8.3.12 Wideband Reactive Power (Q1
WB
, Q2
WB
)
Address: 20 (Q1
WB
), 21 (Q2
WB
)
Wideband reactive power is calculated using vector subtraction. (See
Section 4.8 Power and Energy Results
on page 16). The value is signed, but has a range of 0
value 1.0. The binary point is to the right of the MSB.
MSB
LSB
0
2
22
2
21
2
20
2
19
2
18
2
17
2
16
.....
2
6
2
5
2
4
2
3
2
2
2
1
2
0
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