AN3393 datasheet(58/103 Pages) STMICROELECTRONICS

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Operation codes

AN3393

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STOP command halts State Machine y execution:

–

CTRL_REG1, bit SM1_EN is set to 0 for State Machine 1;

–

Or CTRL_REG2, bit SM2_EN is set to 0 for State Machine 2;

–

Set STAT, bit SYNC1 = 0 and STAT, bit SYNC2 = 0 (synchronization is not

allowed).

If SETTy, bit SITR = 1:

–

OUTSy is updated to selected temporary mask value;

–

Set output signal: STAT, bit INT_SMy = 1.

Wait for restart from host. When restart occurs:

–

CTRL_REG1, bit SM1_EN is set to 0 for State Machine 1;

–

Or CTRL_REG2, bit SM2_EN is set to 0 for State Machine 2.

This command affects or is affected by the following registers:

–

State Machine y is enabled/disabled: CTRL_REG1, bit SM1_EN is set to 0/1 for

State Machine 1 or CTRL_REG2, bit SM2_EN is set to 0/1 for State Machine 2;

–

SETTy, bit SITR: defines output functionality of STOP command;

–

OUTSy: output value of State Machine y;

–

STAT, bit INT_SMy: indicator of valid interrupt action;

–

PRy: Program and Reset pointer addresses.

6.2.2

CONT (11h)

The CONT command loops execution to the beginning.

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

Actions:

If SETTy, bit SITR = 1:

–

OUTSy is updated to selected temporary mask value;

–

Set output register (and signal if selected): STAT, bit INT_SMy = 1.

Default initial start executed

Continue execution from step address PPy = 0

This command affects or is affected by the following registers:

–

State Machine y is enabled/disabled: CTRL_REG1, bit SM1_EN is set to 0/1 for

State Machine 1. CTRL_REG2, bit SM2_EN is set to 0/1 for State Machine 2;

–

SETTy, bit SITR: Defines output functionality of STOP command;

–

OUTSy: Output value of State Machine y;

–

STAT, bit INT_SMy: Indicator of valid interrupt action;

–

PRy: Program and Reset pointer addresses.

6.2.3

JMP (22h)

JMP is the conditional jump command. It has two conditions (in the 1st parameter), these

two conditions refer to different jump addresses (available in the 2nd parameter):

–

1st parameter: COND1 (4 bits - MSB part); condition COND2 (4 bits - LSB part);

–

2nd parameter: ADD1 (4 bits - MSB part), address ADD2 (4 bits - LSB part).

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