AS5410 datasheet(24/56 Pages) AMSCO

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[v2-04] 2015-Oct-07

AS5410 − Register Description

Figure 30:

Example: Select V0 and V1.

The corresponding dual number to 00000011 is 3 this number

multiplied with 64 is the minimum allowed magnitude of

CORDIC.

64 * 3 = 192 = Threshold limit

If the magnitude of CORDIC turns under 192 the MagLost bit in

H2…H0: The hysteresis around the minimum allowed

magnitude of CORDIC can be selected.

The hysteresis Hystd is calculated by the formula

Figure 31:

Example: Select H0

Now the MagLost bit in register 0107h will turn form 0 to 1 at a

magnitude of CORDIC value lower than 192. After the MagLost

bit is 0 it turns back to 1 at a value higher than 288, because

192 + 96 = 288.

Binary

Decimal

Hyst

: Hysteresis value in Register 000Fh

Hystd

: Decimal hysteresis value around the

minimum allowed magnitude of CORDIC

MgnLostLmt

: The threshold limit as calculated in the

example above.

Binary

Decimal

(EQ1)

Hystd

MgnLostLmt

2Hyst

-------------

(EQ2)

Hystd

MgnLostLmt

2Hyst

-------------

192

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