AS5047P datasheet(20/40 Pages) AMSCO

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[v1-00] 2014-Oct-31

AS5047P − Detailed Description

ABI Incremental Interface

The AS5047P can send the angle position to the host

microcontroller through an incremental interface. This

interface is available simultaneously with the other interfaces.

By default, the incremental interface is set to work at the highest

resolution 4096 step per revolution, or 1024 pulses per

revolution (ppr). It is possible to select between a decimal and

binary pulses per revolution, respectively with the bit ABIBIN

and select the pulses per revolution with the bit ABIRES as

shown in Figure 31.

Figure 31:

ABI Resolution Setting

The phase shift between the signals A and B indicates the

rotation direction: e.g. DIR-Bit = 0, clockwise (A leads, B follows)

or counterclockwise (B leads, A follows). During the start-up

time, after power ON to the chip, all three ABI signals are high.

ABIRES

ABIBIN

Steps per revolution

Pulses per revolution

000

4000

1000

001

2000

500

010

1600

400

011

1200

300

100

800

200

101

400

100

110

200

111

100

000

4096

1024

001

2048

512

010

1024

256

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