Reset asserted level

Asserted or active level of the reset input signal

Model Configuration Pane: HDL Code Generation / Global Settings

Description

The Reset asserted level parameter specifies whether the asserted or active level of the reset input signal is active-high or active-low.

Settings

Active-high (default) | Active-low

Active-high

Specifies that the asserted level of the reset input signal is active-high. For example, this code fragment checks whether reset is active-high before populating the delay_pipeline register:

Delay_Pipeline_Process : PROCESS (clk, reset)
BEGIN
  IF reset = '1' THEN
    delay_pipeline(0 TO 50) <= (OTHERS => (OTHERS => '0'));
.
.
.

To reset the registers in your design when you input a logic high value to the value of the Reset input port parameter, set Reset asserted level to Active-high.

Active-low

Specifies that the asserted level of the reset input signal is active-low. For example, this code fragment checks whether reset is active-low before populating the delay_pipeline register:

Delay_Pipeline_Process : PROCESS (clk, reset)
BEGIN
  IF reset = '0' THEN
    delay_pipeline(0 TO 50) <= (OTHERS => (OTHERS => '0'));
.
.
.

To reset the registers in your design when you input a logic low value to the value of the Reset input port parameter, set Reset asserted level to Active-low.

Tips

To set this property, use the functions hdlset_param or makehdl. To view the property value, use the function hdlget_param.

For example, to set this property for a subsystem named symmetric_fir in a model named sfir_fixed, use one of these methods:

• Pass the property as an argument to the makehdl function.

  makehdl("sfir_fixed/symmetric_fir","ResetAssertedLevel","active-high")

• Use hdlset_param to set the parameter on the model and then generate HDL code using makehdl.

  hdlset_param("sfir_fixed","ResetAssertedLevel","active-high")
  makehdl("sfir_fixed/symmetric_fir")

Programmatic Use

Parameter: ResetAssertedLevel

Type: character vector

Value: "active-high" | "active-low"

Default: "active-high"

Version History

Introduced in R2012a