CS5490-ISZ datasheet(41/56 Pages) APEX

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CS5490

DS982F2

6.6.17 No Load Threshold (LoadMIN) – Page 16, Address 58

Default = 0x00 0000

LoadMIN is used to set the no-load threshold for the anti-creep function.

When the magnitudes of PSUM and QSUM are less than LoadMIN, PSUM and QSUM are forced to zero. When

the magnitude of SSUM is less than LoadMIN, SSUM is forced to zero.

LoadMIN is a two’s complement value in the range of -1.0  value  1.0, with the binary point to the right of the

MSB. Negative values are not used.

6.6.18 Sample Count (SampleCount) – Page 16, Address 51

Default = 0x00 0FA0 (4000)

Determines the number of output word rate (OWR) samples to use in calculating low-rate results.

SampleCount (N) is an integer in the range of 100 to 8,388,607. Values less than 100 should not be used.

6.6.19 Cycle Count (CycleCount) – Page 18, Address 62

Default = 0x00 0064 (100)

Determines the number of half-line cycles to use in calculating low-rate results when the CS5490 is in Line-cy-

cle Synchronized Averaging mode.

CycleCount is an integer in the range of 1 to 8,388,607. Zero should not be used.

6.6.20 Filter Settling Time for Conversion Startup (TSETTLE) – Page 16, Address 57

Default = 0x00 001E (30)

Sets the number of output word rate (OWR) samples that will be used to allow filters to settle at the beginning

of Conversion and Calibration commands.

This is an integer in the range of 0 to 16,777,215 samples.

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

MSB

LSB

222

221

220

219

218

217

216

.....

MSB

LSB

222

221

220

219

218

217

216

.....

MSB

LSB

223

222

221

220

219

218

217

216

.....

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