AN3393 datasheet(52/103 Pages) STMICROELECTRONICS

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Operation codes

AN3393

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DocID018750 Rev 4

This condition affects or is affected by the following registers:

–

THRS2_y: Threshold 2 value;

–

MASKy_A and MASKy_B: Axis mask filter values;

–

SETTy, bit ABS: Unsigned/signed settings;

–

SETTy, bit R_TAM: Release temporary output mask settings;

–

SETTy, bit P_DET: Peak detection settings;

–

PEAKy: Peak output value;

–

PRy: Program and Reset pointer addresses.

6.1.8

LNTH1 (7h)

The LNTH1 condition is valid if any/triggered axis of data sample set (X, Y, Z, V) is less than

or equal to threshold 1 level.

Threshold is: THRS1_y - Hysteresis.

Hysteresis is:

–

State Machine 1: CTRL_REG1, bits HYST2_1, HYST1_1 and HYST0_1;

–

State Machine 2: CTRL_REG2, bits HYST2_2, HYST1_2 and HYST0_2.

This condition affects or is affected by the following registers:

–

THRS1_y: Threshold 1 value;

–

MASKy_A and MASKy_B: Axis mask filter values;

–

SETTy, bit ABS: Unsigned/signed settings;

–

SETTy, bit R_TAM: Release temporary output mask settings;

–

SETTy, bit P_DET: Peak detection settings;

–

PEAKy: Peak output value;

–

PRy: Program and Reset pointer addresses.

6.1.9

LNTH2 (8h)

The LNTH2 condition is valid if any/triggered axis of data sample set (X, Y, Z, V) is less than

or equal to threshold 2 level.

Threshold is: THRS2_y - Hysteresis.

Hysteresis is:

–

State Machine 2: CTRL_REG1, bits HYST2_1, HYST1_1 and HYST0_1;

–

State Machine 3: CTRL_REG2, bits HYST2_2, HYST1_2 and HYST0_2.

This condition affects or is affected by the following registers:

–

THRS2_y: Threshold 2 value;

–

MASKy_A and MASKy_B: Axis mask filter values;

–

SETTy, bit ABS: Unsigned/signed settings;

–

SETTy, bit R_TAM: Release temporary output mask settings;

–

SETTy, bit P_DET: Peak detection settings;

–

PEAKy: Peak output value;

–

PRy: Program and Reset pointer addresses.

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