KMA36 universal magnetic encoder

KMT36 Rev 4

www.meas-spec.com

2012-july

9/16

 SPD-Bit (KCONF register)

The measurement update rate can be increased by activating the fast mode with SPD bit. In fast mode

measurement accuracy is reduced.

Table 12: Update rate

 PWR-Bit (KCONF register)

The power current consumption can be reduced with the low power mode accessible through the PWR bit.

In low power mode only 180° measurement are possible.

 OVCS-Bits (KCONF register)

To increase the measurement accuracy, it is possible to configure the oversampling rate by using the

OVSCx bits. Please notice that a higher accuracy leads to a reduction of the update rate (Please refer to the

Update rate table)

OVCS1

OVSC0

Oversampling

0

0

2

0

1

4

1

0

8

1

1

32

Table 13: OVSC - Oversampling

 KRES (Resolution register)

The resolution can be set to any decimal value between 1 and 32768. Any other value would lead to

unexpected system behavior.

KRES - Resolution register

Bit

15

14

13

12

11

10

9

8

KRESH

KRES15

KRES14

KRES13

KRES12

KRES11

KRES10

KRES9

KRES8

KRESL

KRES7

KRES6

KRES5

KRES4

KRES3

KRES2

KRES1

KRES0

Bit

7

6

5

4

3

2

1

0

Read/Write

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

Initial value

0

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Table 14: KRES - Resolution Register

For example, a resolution of decimal 360 (0x00168) leads to rotational data in steps of 1 degree. A

resolution of decimal 3600 (0x0E10) results in steps of 0.1°.

Update rate

SPD Bit

const

0

1

1

2