Cs5484, 20 filter settling time for conversion startup (t, Page 16, address 57 – Cirrus Logic CS5484 User Manual
Page 48: 21 system gain (sys, Page 16, address 60, 22 rogowski coil integrator gain (int, Page 18, address 43, 23 system time (time), Page 16, address 61
CS5484
48
DS981F3
6.6.20 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.
6.6.21 System Gain (Sys
GAIN
)
–
Page 16, Address 60
Default = 0x50 0000 (1.25)
System Gain (Sys
GAIN
) is applied to all channels.
By default, Sys
GAIN
= 1.25 but can be finely adjusted to compensate for voltage reference error. It is a two's
complement value in the range of -2.0
value 2.0, with the binary point to the right of the second MSB. Val-
ues should be kept within 5% of 1.25.
6.6.22 Rogowski Coil Integrator Gain (Int
GAIN
)
–
Page 18, Address 43
Default = 0x14 3958
Gain for the Rogowski coil integrator. This must be programmed accordingly for 50Hz and 60Hz (0.158 for
50Hz, 0.1875 for 60Hz).
This 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.
6.6.23 System Time (Time)
–
Page 16, Address 61
Default = 0x00 0000
System Time (Time) is measured in OWR samples.
This is an unsigned integer in the range of 0 to 16,777,215 samples. At OWR = 4.0kHz, OWR will overflow
every 1 hour, 9 minutes, 54 seconds. Time can be used by the application to manage real-time events.
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
MSB
LSB
-(2
1
)
2
0
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
.....
2
-16
2
-17
2
-18
2
-19
2
-20
2
-21
2
-22
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
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