Logical Groups

Overview

These blocks are used for Logical operation of a given input.

• Logical OR

• Logical AND

• Logical NOT

• Logical XOR

• SR Flip-flop

• Toggle Flip-flop

• Data Flip-flop

• Latch

Logical OR

This block is used to find the Logical OR operation all the inputs and store result in the output.

Properties

Name	Description
Number of Inputs	Number of Inputs to be Logical OR

Inputs and Outputs

Name	Description	Supported data type
In – Input 1	Input 1	Boolean
In – Input 2	Input 2	Boolean
In – Input n	Input n	Boolean
Out – Output	Logical OR value of all input values	Boolean

Logical AND

This block is used to find the Logical AND operation all the inputs and store result in the output.

Properties

Name	Description
Number of Inputs	Number of Inputs to be Logical AND

Inputs and Outputs

Name	Description	Supported data type
In – Input 1	Input 1	Boolean
In – Input 2	Input 2	Boolean
In – Input n	Input n	Boolean
Out – Output	Logical AND value of all input values	Boolean

Logical NOT

This block is used to find the Logical NOT operation all the inputs and store result in the output.

Inputs and Outputs

Name	Description	Supported data type
In – Input	Input	Boolean
Out – Output	Logical NOT value of input	Boolean

Logical XOR

This block is used to find the Logical XOR operation all the inputs and store result in the output.

Inputs and Outputs

Name	Description	Supported data type
In – Input 1	Input 1	Boolean
In – Input 2	Input 2	Boolean
Out – Output	Logical XOR value of all input values	Boolean

SR Flip-flop

This block is used to find the SR Flip-flop of given inputs and store result in the output.The output is the logical set/reset value.The truth table as shown below:

SR Flipflop

Clock input	Reset input	Set input	Output
Low(0)	Low(0)	Low(0)	Previous state
High(1)	High(1)	Low(0)	Low(0)
High(0)	Low(0)	High(1)	High(1)
High(1)	High(1)	High(1)	High(1)

Inputs and Outputs

Name	Description	Supported data type
In – Clock Input	Clock Input	Boolean
In – Reset Input	Reset Input	Boolean
In – Set Input	Set Input	Boolean
Out – Output	SR Flip-flop value of all input values	Boolean

Toggle Flip-flop

This block is used to find the Toggle Flip-flop of given inputs and store result in the output. On rising edge of the input, toggle the output.

T Flipflop

Clock input	Clock previous state	Toggle input	Output	Edge detected
Low(0)	Low(0)	X (0 or 1)	Previous state	No edge triggered
High(1)	Low(0)	0	Previous state	Rising edge
High(1)	Low(0)	1	Toggling of Previous state	Rising edge
High(1)	High(1)	X	Previous state	No edge triggered
Low(0)	High(1)	X	Previous state	Falling edge

Inputs and Outputs

Name	Description	Supported data type
In – Clock Input	Clock Input	Boolean
In – Toggle Input	Toggle Input	Boolean
Out – Output	Toggle Flip-flop value of all input values	Boolean

Data Flip-flop

This function block performs the logical operation of D FLIPFLOP. Output holds the value it read from Data on the last rising edge of Clock, or 0 if there have been no Clocks since power up. On rising edge of the clock, input value is stored in the output.

D Flipflop

Clock input	Clock previous state	Data input	Output	Edge detected
Low(0)	Low(0)	X (0 or 1)	Previous state	No edge triggered
High(1)	Low(0)	0	0	Rising edge
High(1)	Low(0)	1	1	Rising edge
High(1)	High(1)	X	Previous state	No edge triggered
Low(0)	High(1)	X	Previous state	Falling edge

Inputs and Outputs

Name	Description	Supported data type
In – Clock Input	Clock Input	Boolean
In – Data Input	Data Input	Boolean
Out – Output	Data Flip-flop value of all input values	Boolean

Latch

• This block is used to Latch of given inputs and store result in the output. While the Latch is False, the Output follows the Input. While the Latch is True, the Output holds the last value it read from Input.When latch is false, input value is stored in the output. Otherwise, output value remains unchanged. If the block is latched from power up, the output will be zero. The Output will be of the same data type as the input.

• Output only updates when Enable is high. When Enable is low, the latch “remembers” the previous value (Q_prev).

Latch

Enable Latch	Input	Output	Description
Low(0)	X (0 or 1)	Previous state	Output holds its previous value.
High(1)	Low(0)	0	Output follows input (Input = 0).
High(1)	High(1)	1	Output follows input (Input = 1)

Inputs and Outputs

Name	Description	Supported data type
In – Latch Input	Latch Input	Boolean
In – Data Input	Data Input	Boolean
Out – Output	Latch value of all input values	Boolean