LP55231 datasheet(44/59 Pages) TI2

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LP55231

SNOSCR5D – MARCH 2013 – REVISED DECEMBER 2016

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NAME

VALUE (d)

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.

variable 1

0 - 3

Defines the variable to be used in the test:

0 = local variable A

1 = local variable B

2 = global variable C

3 = register address 3CH variable, or register address 42H value.

variable 2

0 - 3

Defines the variable to be used in the test:

0 = local variable A

1 = local variable B

2 = global variable C

3 = register address 3CH variable, or register address 42H value.

7.6.7 Arithmetic Instructions

7.6.7.1 LD

This instruction is used to assign a value into a variable; the previous value in that variable is overwritten. Each

of the engines have two local variables, called A and B. The variable C is a global variable.

NAME

VALUE (d)

DESCRIPTION

target variable

0 - 2

0 = variable A

1 = variable B

2 = variable C

8-bit value

0 - 255

Variable value

7.6.7.2 ADD

Operator either adds 8-bit value to the current value of the target variable, or adds the value of the variable 1 (A,

B, C or D) to the value of the variable 2 (A, B, C or D) and stores the result in the register of variable A, B or C.

Variables overflow from 255 to 0.

NAME

VALUE (d)

DESCRIPTION

8-bit value (i)

0 - 255

The value to be added.

target variable

0 - 2

0 = variable A

1 = variable B

2 = variable C

variable 1 (ii)

0 - 3

0 = local variable A

1 = local variable B

2 = global variable C

3 = register address 3CH variable, or register address 42H value.

variable 2 (ii)

0 - 3

0 = local variable A

1 = local variable B

2 = global variable C

3 = register address 3CH variable, or register address 42H value.

7.6.7.3 SUB

SUB Operator either subtracts 8-bit value from the current value of the target variable, or subtracts the value of

the variable 2 (A, B, C or D) from the value of the variable 1 (A, B, C or D) and stores the result in the register of

target variable (A, B or C). Variables overflow from 0 to 255.

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