AS5601-ASOT datasheet(20/43 Pages) AMSCO

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[v1-02] 2014-Oct-29

AS5601 − Register Description

ZPOS Registers

These registers are used to configure the zero position (ZPOS).

This register is used to align the electric grid of the incremental

output with the mechanical grid of an encoder switch.

CONF Register

The CONF register supports customizing the AS5601. Figure 20

shows the mapping of the CONF register.

PUSHTHR Register

This register is used to set-up the contactless pushbutton

function. This register must be adjusted according to the airgap

and magnet configuration. The swing of the pushbutton

function can be found by subtracting the AGC value of the

pressed button from the AGC value of the released button. The

threshold value for the contactless pushbutton should be half

of the swing.

Figure 20:

CONF and ABN mapping

Note(s) and/or Footnote(s):

1. Forced in Low Power Mode (LPM)

Name

Bit Position

Description

CONF Mapping

PM(1:0)

1:0

Power Mode

00 = NOM, 01 = LPM1, 10 = LPM2, 11 = LPM3

HYST(1:0)

3:2

Hysteresis

00 = OFF, 01 = 1 LSB, 10 = 2 LSBs, 11 = 3 LSBs

SF(1:0)

9:8

Slow Filter

00 = 16x (1); 01 = 8x; 10 = 4x; 11 = 2x

FTH(2:0)

12:10

Fast Filter Threshold

000 = slow filter only, 001 = 6 LSBs, 010 = 7 LSBs, 011 = 9 LSBs,100 = 18

LSBs, 101 = 21 LSBs, 110 = 24 LSBs, 111 = 10 LSBs

Watchdog Timer

0 = OFF, 1 = ON (automatic entry into LPM3 low-power mode enabled)

ABN Mapping

ABN(3:0)

3:0

Output Positions and Update Rate

0000 : 8 (61 Hz)

0001 : 16 (122 Hz)

0010 : 32 (244 Hz)

0011 : 64 (488 Hz)

0100 : 128 (976 Hz)

0101 : 256 (1.9 kHz)

0110 : 512 (3.9 kHz)

0111 : 1024 (7.8 kHz)

others : 2048 (15.6 kHz))

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