AN3393 datasheet(67/103 Pages) STMICROELECTRONICS

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AN3393

Operation codes

103

6.2.21

SRADI1 (23h)

The SRADI1 command enables the difference mode on input data for State Machine 2. The

SRADI1 command is effective only for State Machine 2.

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

Actions:

The SRADI0 command sets to 1 the bit RADI, in register SETT2:

–

DIFF 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.

6.2.22

SELSA (24h)

The SELSA command sets the axis mask pointer to MASKy_B.

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

Actions:

MASKy_B 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.

6.2.23

SCS0 (31h)

The SCS0 command sets the DIFF2 difference mode for State Machine 2. After this

command, input data is the difference between current data and the previous data.

The SCS0 command is effective only for State Machine 2.

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

Actions:

SCS0 command sets to 0 the bit D_CS, in register SETT2:

–

DIFF calculated data input type is selected for State Machine 2;

–

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

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.

6.2.24

SCS1 (32h)

The SCS1 command sets the constant shift difference mode for State Machine 2: input data

is the difference between the current data and the value contained in constant shift

registers. SCS1 command is effective only for State Machine 2.

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