CS5480 datasheet(43/70 Pages) CIRRUS

43 / 70 page

CS5480

DS980F3

6.6.6 Pulse Output Width (PulseWidth) – Page 0, Address 8

Default = 0x00 0001 (265.6µs at OWR = 4kHz)

PulseWidth sets the energy pulse frequency range and the duration of energy pulses.

The actual pulse duration is 250µs plus the contents of PulseWidth divided by 64,000. PulseWidth is an inte-

ger in the range of 1 to 65,535.

[23:20]

Reserved.

FREQ_RNG[3:0]

Energy pulse (PulseRate) frequency range for 0.1% resolution.

0000 = Freq. range:

2kHz–0.238Hz (Default)

0001 = Freq. range:

1kHz–0.1192Hz

0010 = Freq. range:

500Hz–0.0596Hz

0011 = Freq. range:

250Hz–0.0298Hz

0100 = Freq. range:

125Hz–0.0149Hz

0101 = Freq. range:

62.5Hz–0.00745Hz

0110 = Freq. range:

31.25Hz–0.003725Hz

0111 = Freq. range:

15.625Hz–0.0018626Hz

1000 = Freq. range:

7.8125Hz–0.000931323Hz

1001 = Freq. range:

3.90625Hz–0.000465661Hz

1010 = Reserved

...

1111 = Reserved

PW[15:0]

Energy Pulse Width.

6.6.7 Zero crossing Number (ZXNUM) – Page 0, Address 55

Default = 0x00 0064 (100)

ZXNUM is the number of zero crossings used for line frequency measurement. It is an integer in the range of

1 to 8,388,607. Zero should not be used.

6.6.8 Energy Pulse Rate (PulseRate) – Page 18, Address 28

Default= 0x80 0000

PulseRate sets the full-scale frequency for the energy pulse outputs.

For a 4kHz OWR rate, the maximum pulse rate is 2kHz. This is a two's complement value in the range of

-1

value1, with the binary point to the left of the MSB.

Refer to section 5.5 Meter Configuration Modes on page 23 for more information.

FREQ_RNG[3] FREQ_RNG[2] FREQ_RNG[1] FREQ_RNG[0]

PW[15]

PW[14]

PW[13]

PW[12]

PW[11]

PW[10]

PW[9]

PW[8]

654

PW[7]

PW[6]

PW[5]

PW[4]

PW[3]

PW[2]

PW[1]

PW[0]

MSB

LSB

223

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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