KMA310 datasheet(18/71 Pages) NXP

18 / 71 page

NXP Semiconductors

KMA310

Programmable angle sensor IC

KMA310

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Product data sheet

Rev. 3 — 27 February 2019

18 / 71

The KMA310 generates a specific diagnostic value instead of an angular value in case

the device is in diagnostic mode. The diagnostic value depends on the selected protocol

format according to Table 31.

Table 31. Fast channel diagnostic value

Protocol format

Normal mode

Diagnostic mode

A.1

angular value

4095

A.3

angular value

H.1

angular value

4090

H.3

angular value

4090

H.4

angular value

4090

8.11.3 Enhanced serial protocol diagnostic status code message

Detailed diagnostic and pre-warning information is transmitted in the diagnostic status

code message ID 01h of the slow channel message transmission. Therefore, the

enhanced serial protocol must be enabled via the ESP bit in the SENT_SETTING1

code message is given in Table 15.

9 Output characteristic

The MPC defines the output transfer characteristic. For this purpose, up to 17 calibration

points define the range between programmed reference angle and set maximum angle.

Three different MPC types are available, see Table 51, whereas in each mode either a

positive or a negative slope can be programmed. MPC17 and MPC7 enable an improved

linearization of the output characteristic.

Furthermore, curve shapes can be customized in accordance with application

requirements.

9.1 No MPC mode

No MPC mode refers to the conventional linear output characteristic defined by zero

angle (ZERO_ANGLE), angular range (RANGE_DETECTION), clamp switch angle

(CLAMP_SWITCH), and clamping levels (CLAMP_LOW and CLAMP_HIGH).

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