CS5467 datasheet(35/46 Pages) CIRRUS

35 / 46 page

CS5467

DS714A1

ADVANCE RELEASE

These values may be read and stored for future system AC offset compensation. The value is represented in

two's complement notation in the range of -1.0

≤ Vacoff, Iacoff < 1.0 (-1.0 ≤ V2acoff, I2acoff < 1.0), with the binary point

to the right of the MSB.

6.2.5 PulseRateE Register

Address: 15

Default = 0x800000 = 1.00 (2 kHz @ 4.096 MHz MCLK)

PulseRateE sets the frequency of E1, E2, & E3

pulses. E1, E2, E3 frequency = (MCLK x PulseRateE) / 2048 at

full scale. For a 4 khz sample rate, the maximum pulse rate is 2 khz. The value is represented in two's comple-

ment notation and in the range is -1.0

≤ PulseRateE < 1.0, with the binary point to the right of the MSB. Negative

values have the same effect as positive. See Section 5.5 Energy Pulse Output on page 18 for more information.

6.2.6 Operational Mode (Mode) Register

Address: 16

Default = 0x000000

E2MODE

E2 Output Mode

0 = Sign of Active Power (default)

1 = Apparent Power

VHPF(VHPF2) Enables the High Pass Filter on the voltage channel.

0 = High-pass filter disabled (default)

1 = High-pass filter enabled

IHPF(IHPF2)

Enables the High Pass Filter on the current channel.

0 = High-pass filter disabled (default)

1 = High-pass filter enabled

E3MODE1:0

E3 Output Mode

00 = Reactive Power (default)

01 = PFMON

10 = Voltage sign

11 = Apparent Power

POS

Positive Energy Only. Negative energy pulses on E1 are suppressed. However, negative P reg-

ister results will NOT be suppressed.

AFC

Enables automatic line frequency measurement and sets the frequency of the local sine/cosine

generator used in fundamental/harmonic measurements. When AFC is enabled, the Epsilon

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

E2MODE

VHPF2

654

IHPF2

VHPF

IHPF

E3MODE[1]

E3MODE[0]

POS

AFC

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