AS5600L datasheet(30/48 Pages) AMSCO

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[v1-12] 2020-May-14

AS5600L − Register Description

PWM Output Mode

The AS5600L output stage can be programmed in the OUTS bits

of the CONF register for a PWM-encoded digital output (OUTS

= 10). In this mode, the OUT pin provides a digital PWM signal.

The duty cycle of each pulse is proportional to the absolute

angle of the rotating magnet.

The PWM signal consists of a frame of 4351 PWM clock periods

as shown in Figure 29. This PWM frame is composed of the

following sections:

• 128 PWM clock periods high

• 4095 PWM clock periods data

• 128 PWM clock periods low

The angle is represented in the data part of the frame, and one

PWM clock period represents one 4096th of the full angular

range. The PWM frequency is programmed with the PWMF bits

in the CONF register.

Note(s): If the range is 360 degrees, to avoid discontinuity

points exactly at the limit of the range, a 10-LSB hysteresis is

applied. This hysteresis suppresses toggling the position when

the magnet is close to zero or 360 degrees.

Figure 29:

Output Characteristics in Pulse Width Modulation Mode

An angle of zero degrees is represented by 128 clock periods

high and 4223 clock periods low, while a maximum angle

consists of 4223 clock periods high and 128 clock periods low.

time

data

128 clock

periods low

128 clock

periods high

AS5600L 데이터시트(PDF) 30 Page - ams AG