AN3393 datasheet(63/103 Pages) STMICROELECTRONICS

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AN3393

Operation codes

103

Actions:

Change selected temporary mask one axis sign to the opposite:

–

If sign(axis) is positive, new sign(axis) is negative;

–

If sign(axis) is negative, new sign(axis) is positive;

–

If axis information is zero, no changes.

This command affects or is affected by the following registers:

–

PRy: Program and Reset pointer addresses.

6.2.14

REL (DDh)

The REL command releases the temporary axis mask information.

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

Actions:

Reset temporary masks to default value.

If SETTy, bit P_DET == 1:

–

PEAKy = 0;

–

Reset peak detection to initial phase.

This command affects or is affected by the following registers:

–

PRy: Program and Reset pointer addresses;

–

SETTy, bit P_DET: Peak detection settings;

–

PEAKy: Peak output value.

6.2.15

STHR3 (EEh)

The STHR3 command sets the threshold 3 register to a new value (1st parameter).

This command is an “Immediately executed” type and it takes one parameter:

–

New value to be set in THRS3_y register (8 bits).

Actions:

The STHR3 command sets the value of the THRS3_y register to a new value (8 bits -

1st parameter):

–

The new value of THRS3_y register is valid when the next step starts;

–

Program pointer is increased by 2 units: PPy = PPy +2.

This command affects or is affected by the following registers:

–

PRy: Program and Reset pointer addresses;

–

THRS3_y: Threshold 3 limit value.

6.2.16

SSYNC (FFh)

The SYNC command switches execution from one state machine to the other one. This

command takes effect only when both State Machine 1 and State Machine 2 are enabled

(through SM1_EN and SM2_EN bits in CTRL_REG1 and CTRL_REG2 registers).

Execution waits for halt release from the other state machine.

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