AN3393 datasheet(39/103 Pages) STMICROELECTRONICS

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AN3393

103

4.48

SETT2 (7Bh)

Setting of threshold, peak detection, and flags for State Machine 2 motion detection

operations.

Table 74. MASK2_A register description

P_X

0 = X+ disabled, 1 =X+ enabled

N_X

0 = X- disabled, 1 = X- enabled

P_Y

0 = Y+ disabled, 1 = Y+ enabled

N_Y

0 = Y- disabled, 1 = Y- enabled

P_Z

0 = Z+ disabled, 1 = Z+ enabled

N_Z

0 = Z- disabled, 1 = Z- enabled

P_V

0 = V+ disabled, 1 = V+ enabled

N_V

0 = V- disabled, 1 = V- enabled

Table 75. SETT2 register

P_DET

THR3_SA

ABS

RADI

D_CS

THR3_MA

R_TAM

SITR

Table 76. SETT2 register description

P_DET

SM2 peak detection. Default value: 0

0 = peak detection disabled, 1 = peak detection enabled.

For more information about peak detection refer to Section 8.

THR3_SA

Default value: 0

0 = no action, 1 = threshold 3 limit value for axis and sign mask reset (MASK2_B)

ABS

Default value: 0

0 = unsigned thresholds, 1 = signed thresholds

For more details refer to Section 7.2.

RADI

0 = raw data; 1 = diff data for State Machine 2

D_CS

0 = DIFF2 enabled (difference between current data and previous data),

1 = constant shift enabled (difference between current data and constant values)

THR3_MA

Default value: 0

0 = no action, 1 = threshold 3 enabled for axis and sign mask reset (MASK2_A)

R_TAM

Next condition validation flag. Default value: 0

0 = mask frozen on the axis that triggers the condition, 1 = standard mask always

evaluated.

For more details about the temporary axis mask refer to Section 7.3.

SITR

Default value: 0

0 = no actions, 1 = STOP and CONT commands generate an interrupt and perform

output actions as OUTC command.

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