Cs5480, 21 voltage fixed rms reference (vf, Page 16, address 59 – Cirrus Logic CS5480 User Manual
Page 50: 22 sample count (samplecount), Page 16, address 51, 23 cycle count (cyclecount), Page 18, address 62, 24 filter settling time for conversion startup (t, Page 16, address 57
CS5480
50
DS980F3
6.6.21 Voltage Fixed RMS Reference (VF
RMS
) – Page 16, Address 59
Default = 0x5A 8279 (0.7071068)
The VF
RMS
register contains the internal RMS reference used when voltage input tampering is detected by
the application program. The application may choose to set the VFIX bit in the Config2 register to force
full-scale energy accumulation at the VF
RMS
level.
This register holds two's complement value in the range of 0.0
value <1.0, with the binary point to the right
of the MSB. Negative values are not used.
6.6.22 Sample Count (SampleCount)
–
Page 16, Address 51
Default = 0x00 0FA0 (4000)
Determines the number of OWR samples to use in calculating low-rate results.
SampleCount (N) is an integer in the range of 100 to 8,388,607. Values less than 100 should not be used.
6.6.23 Cycle Count (CycleCount)
–
Page 18, Address 62
Default = 0x00 0064 (100)
Determines the number of half-line cycles to use in calculating low-rate results when the CS5480 is in Line-cy-
cle Synchronized Averaging mode.
CycleCount is an integer in the range of 1 to 8,388,607. Zero should not be used.
6.6.24 Filter Settling Time for Conversion Startup (T
SETTLE
) – Page 16, Address 57
Default = 0x00 001E (30)
Sets the number of OWR samples that will be used to allow filters to settle at the beginning of Conversion and
Calibration commands.
This is an integer in the range of 0 to 16,777,215 samples.
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
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
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
23
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