CS5464-IS(2007) 查看數據表（PDF） - Cirrus Logic

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CS5464-IS
(Rev.:2007)

Three-channel, Single-phase Power/Energy IC

Cirrus Logic 

CS5464

8.3.18 System Gain (G) – Address: 28

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

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

MSB

LSB

223 222 221 220 219 218 217 216 .....

26

25

24

23

22

21

20

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)

MSB

LSB

0

222 221 220 219 218 217 216 .....

26

25

24

23

22

21

20

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)

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

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.

38

DS682F1

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