Unit Delay Enabled Resettable External IC (Fixed-Point Blockset)

Unit Delay Enabled Resettable External IC

Delay a signal one sample period, if the external enable signal is on, with an external Boolean reset and initial condition

Library

Delays & Holds

Description

The Unit Delay Enabled Resettable External IC block combines the features of the Unit Delay Enabled, Unit Delay External IC, and Unit Delay Resettable blocks.

The block can reset its state based on an external reset signal R. When the enable signal E is on and the reset signal R is false, the block outputs the input signal delayed by one sample period.

When the enable signal E is on and the reset signal R is true, the block resets the current state to the initial condition given by the signal IC, and outputs that state delayed by one sample period.

When the enable signal is off, the block is disabled, and the state and output do not change except for resets. The enable signal is on when E is not 0, and off when E is 0.

The output data type is the same as the input u and the initial condition IC data type, which can be any data type, but must be the same. The enable E and reset R can be any data type.

You specify the time between samples with the Sample time parameter. A setting of -1 means the Sample time is inherited.

Parameters and Dialog Box

Sample time: Sample time.

Characteristics

Input Port u
Any data type supported by the blockset

Input Port E
Any data type supported by the blockset

Input Port R
Any data type supported by the blockset

Input Port IC
Same as the input u

Output Port
Same as the input u

Direct Feedthrough
No, of the input port
No, of the enable port
Yes, of the enable port
Yes, of the external IC port

Scalar Expansion
Yes

Input Port `u`	Any data type supported by the blockset
Input Port `E`	Any data type supported by the blockset
Input Port `R`	Any data type supported by the blockset
Input Port `IC`	Same as the input `u`
Output Port	Same as the input `u`
Direct Feedthrough	No, of the input port No, of the enable port Yes, of the enable port Yes, of the external `IC` port
Scalar Expansion	Yes

Unit Delay Enabled Resettable Unit Delay External IC