CS5490-ISZR 查看數據表（PDF） - Cirrus Logic

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CS5490-ISZR

Two Channel Energy Measurement IC

Cirrus Logic 

CS5490

6.6.3 Configuration 2 (Config2) – Page 16, Address 0

23

22

21

20

19

18

-

POS

-

1

-

0

15

14

13

12

11

10

-

APCM

-

ZX_LPF AVG_MODE REG_CSUM_OFF

7

6

5

4

3

2

0

0

0

IFLT[1]

IFLT[0]

VFLT[1]

Default = 0x10 0200

17

0

9

AFC

1

VFLT[0]

16

-

8

0

0

IIR_OFF

[23]

Reserved.

POS

Positive energy only. Suppress negative values in PAVG. If a negative value is calculated,

a zero result will be stored.

0 = Positive and negative energy (Default)

1 = Positive energy only

[21:15]

Reserved.

APCM

[13]

Selects the apparent power calculation method.

0

1

=

=

VSQRMRSTx(PIRAVMGS2(D+ eQfaAuVlGt)2)

Reserved.

ZX_LPF

Enable LPF in zero-cross detect.

0 = LPF disabled (Default)

1 = LPF enabled

AVG_MODE

Select averaging mode for low-rate calculations.

0 = Use SampleCount (Default)

1 = Use CycleCount

REG_CSUM_OFF Disable checksum on critical registers.

0 = Enable checksum on critical registers (Default)

1 = Disable checksum on critical registers

AFC

Enables automatic line frequency measurement which sets Epsilon every time a new line

frequency measurement completes. Epsilon is used to control the gain of 90° phase shift

integrator used in quadrature power calculations.

0 = Disable automatic line frequency measurement

1 = Enable automatic line frequency measurement (Default)

[8:5]

Reserved.

IFLT[1:0]

Filter enable for current channel.

00 = No filter (Default)

01 = High-pass filter (HPF) on current channel

10 = Phase-matching filter (PMF) on current channel

11 = Rogowski coil integrator (INT) on current channel

VFLT[1:0]

Filter enable for voltage channel.

00 = No filter (Default)

01 = High-pass filter (HPF) on voltage channel

10 = Phase-matching filter (PMF) on voltage channel

11 = Reserved

IIR_OFF[0]

Bypass IIR filter.

0 = Do not bypass IIR filter (Default)

1 = Bypass IIR filter

DS982F2

33

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