Cs5480, 25 system gain (sys, Page 16, address 60 – Cirrus Logic CS5480 User Manual
Page 51: 26 rogowski coil integrator gain (int, Page 18, address 43, 27 system time (time), Page 16, address 61, 28 voltage 1 sag duration (v1sag, Page 17, address 0
CS5480
DS980F3
51
6.6.25 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
value2.0, with the binary point to the right of the second MSB. Values
should be kept within 5% of 1.25.
6.6.26 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
value1.0, with the binary point to the right of the MSB.
Negative values are not used.
6.6.27 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, and 54 seconds. Time can be used by the application to manage real-time events.
6.6.28 Voltage 1 Sag Duration (V1Sag
DUR
) – Page 17, Address 0
Default = 0x00 0000
Voltage 1 Sag Duration, V1Sag
DUR
, determines the count of OWR samples utilized to determine a sag event.
These are integers in the range of 0 to 8,388,607 samples. A value of zero disables the feature.
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
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