Cirrus Logic CS5464 - Manual (Page 38)

CS5464
38 DS682F3
8.3.18 System Gain (G) – Address: 28
Default = 1.25
System Gain (G) is applied to all channels. By default, G = 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. Values should be kept within 5% of 1.25.
8.3.19 System Time (Time) – Address: 29
Default = 0
System Time (Time) is measured in output word rate (OWR) samples. This is an unsigned integer in the range
of 0 to 16,777,215 samples. At 4.0 kHz, OWR it will overflow every 1 hour, 9 minutes, and 54 seconds. Time
can be used by the application to manage real-time events.
8.4 Page 2 Registers
8.4.1 Voltage Sag and Current Fault Duration (V1Sag
DUR
, V2Sag
DUR ,
I1Fault
DUR ,
I2Fault
DUR
)
Address: 0 (V1Sag
DUR
), 8 (V2Sag
DUR
), 4 (I1Fault
DUR
), 12 (I2Fault
DUR
)
Default = 0
Voltage sag duration, V1Sag
DUR
(V2Sag
DUR
) and current fault duration , I1Fault
DUR
( I2Fault
DUR
) determine the
count of output word rate (OWR) samples utilized to determine a sag or fault event. These are integers in the
range of 0 to 8,388,607 samples. A value of zero disables the feature.
8.4.2 Voltage Sag and Current Fault Level (V1Sag
LEVEL
, V2Sag
LEVEL
, I1Fault
LEVEL
, I2Fault
LEVEL
)
Address: 1 (V1Sag
LEVEL
), 9 (V2Sag
LEVEL
), 5 (I1Fault
LEVEL
), 13 (I2Fault
LEVEL
)
Default = 0
Voltage sag level, V1Sag
LEVEL
(V2Sag
LEVEL
) and current fault level, I1Fault
LEVEL
(I2Fault
LEVEL
) establish an
input level below which a sag or fault is triggered These are two's complement values in the range of
-1.0
 value  1.0, with the binary point to the right of the MSB. Negative values are not used.
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 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
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