CS5464 datasheet(38/46 Pages) CIRRUS

38 / 46 page

CS5464

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 (V1SagDUR , V2SagDUR , I1FaultDUR , I2FaultDUR )

Address: 0 (V1SagDUR), 8 (V2SagDUR), 4 (I1FaultDUR), 12 (I2FaultDUR)

Default = 0

Voltage sag duration, V1SagDUR (V2SagDUR) and current fault duration, I1FaultDUR (I2FaultDUR) 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 (V1SagLEVEL , V2SagLEVEL , I1FaultLEVEL , I2FaultLEVEL )

Address: 1 (V1SagLEVEL), 9 (V2SagLEVEL), 5 (I1FaultLEVEL), 13 (I2FaultLEVEL)

Default = 0

Voltage sag level, V1SagLEVEL (V2SagLEVEL) and current fault level, I1FaultLEVEL (I2FaultLEVEL) 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

-(21)20

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

223

222

221

220

219

218

217

216

.....

MSB

LSB

222

221

220

219

218

217

216

.....

MSB

LSB

-(20)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

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