Rohm Kionix KX134-1211 - User Manual

A ROHM Group Company
KX134-1211
Rev. 1.0
31-Jul-2019
Kionix, Inc.
36 Thornwood Drive
Ithaca, NY 14850
USA
TEL: +1-607-257-1800
http://www.kionix.com
info@kionix.com
TECHNICAL REFERENCE MANUAL

Summary

Embedded Registers

Register Map

Lists accessible 8-bit registers and their addresses.

Device Identification Registers

MAN_ID for manufacturer and PART_ID for silicon identification.

Accelerometer Output Registers

Provides 16-bit acceleration data per axis, with optional 8-bit resolution.

Command Test Response Register

Verifies integrated circuit functionality via test response.

WHO_AM_I Register

Supplier recognition register, returns a known byte value.

Tilt Position Registers

Reports previous and current tilt position data.

Interrupt Source Registers

Reports interrupt state changes for INS1 and INS2.

Status and Interrupt Release Registers

Reports interrupt status and clears latched interrupts.

Control Registers Overview

CNTL1-CNTL6 registers control main accelerometer features.

Output Data Control Register

Configures acceleration outputs and IIR filter bypass.

Interrupt Control Registers

INC1-INC6 configure interrupt reporting to physical pins INT1/INT2.

Tap;Double-Tap Control Registers

Configures parameters for the Tap/Double-Tap detection engine.

Free Fall Control Registers

FFTH, FFC, FFCNTL registers manage the Free Fall engine.

Tilt Angle Control Registers

Sets low/high tilt angle thresholds and hysteresis for orientation detection.

Low Power Control Registers

LP_CNTL1 and LP_CNTL2 manage averaging and power consumption.

Wake-Up;Back-to-Sleep Thresholds

Sets thresholds and counters for Wake-Up/Back-to-Sleep motion detection.

Self-Test Register

Enables and configures the accelerometer self-test function.

Output Buffer Control Registers

Manages buffer sample threshold, modes, and operation.

Advanced Data Path Control Registers

Configures ADP engine, filters, ODR, and routing options.

Embedded Applications

Orientation Detection Feature

Reports changes in device orientation (face up, down, vertical, horizontal).

Device Orientation Angle (Tilt Angle)

Detects orientation changes using tilt angle and registers.

Tilt Timer

Qualifies orientation changes by maintaining a counter for samples.

Motion Interrupt Feature Description

Configures Wake-Up/Back-to-Sleep engines for threshold-based interrupts.

Relative Threshold Mode

Detects motion based on acceleration difference between consecutive samples.

Absolute Threshold Mode

Detects motion by comparing acceleration sample to a fixed threshold.

Motion Interrupt Examples

Illustrates motion detection behavior under different configuration scenarios.

Directional-Tap Detection Feature

Recognizes and reports single/double tap events based on axis and direction.

Single Tap Detection

Characterizes a tap event using latency timer and window requirements.

Double-Tap Detection

Characterizes a double tap event using timing parameters like TDTC and TWS.

Free Fall Detect

Detects free fall events based on acceleration threshold and duration.

Sample Buffer Feature Description

Explains buffer modes (FIFO, Stream, Trigger) and data accumulation.

Buffer Operation

Illustrates buffer filling, reading, and sample data handling.

Advanced Data Path Feature

Details the capabilities and configuration of the Advanced Data Path (ADP) Engine.

Revision History

Rohm Kionix KX134-1211 Specifications