AN3393 datasheet(66/103 Pages) STMICROELECTRONICS

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Operation codes

AN3393

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This command affects or is affected by the following registers:

–

PRy: Program and Reset pointer addresses;

–

SETTy, bit ABS: Unsigned/signed settings.

6.2.18

SABS1 (13h)

The SABS1 command sets ABS setting to signed.

This command has no parameters and it is an “Immediately executed” type.

Actions:

SABS1 command sets register SETTy, bit ABS to 1:

–

Sign filter is sign dependent;

–

The new value of the SETTy register is valid starting from the next step.

This command affects or is affected by the following registers:

–

PRy: Program and Reset pointer addresses;

–

SETTy, bit ABS: Unsigned/signed settings.

6.2.19

SELMA (14h)

The SELMA command sets the axis mask pointer to MASKy_A.

This command has no parameters and it is an “Immediately executed” type.

Actions:

MASKy_A is selected.

Reset peak detection to initial phase.

This command affects or is affected by the following registers:

–

PRy: Program and Reset pointer addresses;

–

MASKy_A and MASKy_B: Axis mask filter values.

6.2.20

SRADI0 (21h)

The SRADI0 command disables the difference mode on input data for State Machine 2 (raw

data mode). The SRADI0 command is effective only for State Machine 2.

This command has no parameters and it is an “Immediately executed” type.

Actions:

SRADI0 command sets register SETT2, bit RADI to 0:

–

Raw data mode is selected for State Machine 2;

–

The new value of the SETT2 register is valid starting from the next step;

–

Program pointer 2 is increased by 1 unit: PP2 = PP2 +1.

This command affects or is affected by the following registers:

–

PR2: Program and Reset pointer addresses for State Machine 2;

–

SETT2, bit RADI: RAW data / DIFF data input type selector for State Machine 2.

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