AS3661 datasheet(78/87 Pages) AMSCO

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AS3661

Datasheet - D e t a i l e d D e s c r i p t i o n

External trigger input signal must stay low for at least two 32 kHz clock cycles to be executed. Trigger output signal is

three 32 kHz clock cycles long. External trigger signal is active low, i.e. when trigger is send/received the pin is pulled

to GND. Sent external trigger is masked, i.e. the device which has sent the trigger will not recognize it. If send and wait

external trigger are used on the same instruction, the send external trigger is executed first, then the wait external

trigger.

COMPILER COMMAND SYNTAX: TRG, wait for trigger[6], send a trigger[6]

8.14.6.1 TRG Application Example

In this example we want to wait/receive a trigger from program execution engine 1.

COMPILER COMMAND SYNTAX EXAMPLE: TRG, 2, 0;

8.14.7 JNE/JL/JGE/JE

AS3661 instruction set includes the following conditional jump instructions: jne (jump if not equal); jge (jump if greater

or equal); jl (jump if less); je (jump if equal). If the condition is true a certain number of instructions will be skipped (i.e.

the program jumps forward to a location relative to the present location). If condition is false then the next instruction

will be executed.

COMPILER COMMAND SYNTAX: JNE, number of instructions...[5], Variable1[2], Variable2[2];

COMPILER COMMAND SYNTAX: JL, number of instructions...[5], Variable1[2], Variable2[2];

COMPILER COMMAND SYNTAX: JGE, number of instructions...[5], Variable1[2], Variable2[2];

COMPILER COMMAND SYNTAX: JE, number of instructions...[5], Variable1[2], Variable2[2];

8.14.7.1 JNE Application Example

In the following example we compare local variable A with local variable B. If the value of the two registers is not equal

the command will skip three instructions.

COMPILER COMMAND SYNTAX EXAMPLE: JNE, 3, 0,1;

Table 89. TRG Parameter Description

Name

Value

Description

wait for trigger

0-31

Wait for trigger from the engine(s). Several triggers can be defined in the

same instruction. Bit [7] engages engine 1, bit [8] engine 2, bit [9] engine 3

and bit [12] is for external trigger I/O. Bits [10] and [11] are not in use.

send a trigger

0-31

Send a trigger to the engine(s). Several triggers can be defined in the same

instruction. Bit [1] engages engine 1, bit [2] engine 2, bit [3] engine 3 and bit

[6] is for external trigger I/O. Bits [4] and [5] are not in use.

Table 90. JNE/JL/JGE/JE Parameter Description

Name

Value

Description

number of instructions to be

skipped if the operation

returns true.

0-31

The number of instructions to be skipped when the statement is true.

Note: value 0 means redundant code.

Variable1

0-3

Defines the variable to be used in the test:

local variable A

local variable B

global variable

Variable2

0-3

Defines the variable to be used in the test:

local variable A

local variable B

global variable

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