Cirrus Logic CS5480 - Manual (Page 61)

CS5480
DS980F3 61
6.6.73 Average Reactive Power Offset (Q1
OFF
, Q2
OFF
) – Page 16, Address 38, 45
Default = 0x00 0000
Average Reactive Power Offset (Q1
OFF
, Q2
OFF
) is added to averaged reactive power to yield Q1
AVG
(Q2
AVG
) register results. It can be used to reduce systematic energy errors. These are two's complement val-
ues in the range of -1.0  value 1.0, with the binary point to the right of the MSB.
6.6.74 AC Offset for Current (I1
ACOFF
, I2
ACOFF
) – Page 16, Address 37, 44
Default = 0x00 0000
AC offset registers I1
ACOFF
and I2
ACOFF
are initialized to zero on reset. They are used to reduce systematic
errors in the RMS results. These are unsigned values in the range of 0  value  1.0, with the binary point to
the left of the MSB.
6.6.75 Temperature Gain (T
GAIN
) – Page 16, Address 54
Default = 0x 06 B716
Register T
GAIN
is used to scale the Temperature register (T), and is an unsigned fixed-point value in the range
of 0.0 value256.0, with the binary point to the right of bit 16.
Register T can be rescaled by the application using the T
GAIN
and T
OFF
registers. Refer to section 7.3 Tem-
perature Sensor Calibration on page 65 for more information.
6.6.76 Temperature Offset (T
OFF
) – Page 16, Address 55
Default = 0x D5 3998
Register T
OFF
is used to offset the Temperature register (T), and is a two's complement value in the range of
-128.0 value128.0 (°C), with the binary point to the right of bit 16.
Register T can be rescaled by the application using the T
GAIN
and T
OFF
registers. Refer to section 7.3 Tem-
perature Sensor Calibration on page 65 for more information.
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 -1 2 -2 2 -3 2 -4 2 -5 2 -6 2 -7 2 -8 ..... 2 -18 2 -19 2 -20 2 -21 2 -22 2 -23 2 -24
MSB LSB
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0 ..... 2
-10
2
-11
2
-12
2
-13
2
-14
2
-15
2
-16
MSB LSB
-(2 7 ) 2 6 2 5 2 4 2 3 2 2 2 1 2 0 ..... 2 -10 2 -11 2 -12 2 -13 2 -14 2 -15 2 -16