Altera Virtual JTAG IP Core Bedienungsanleitung PDF herunterladen (Seite 23)

Page 4 defines the stimuli that are used during the simulation of your megafunction. A stimulus is either

a Data Register shift (DR shift) or an Instruction Register shift (IR shift). Each stimulus requires a time

at which that shift occurs, the number of bits you want to shift in or out, and the data value you want to

shift in during a shift-in operation. You can add multiple stimuli by clicking the Add Stimulus button.

12. Click Next. Page 5 of the MegaWizard Plug-In Manager appears, which shows that you need the altera_mf

library to simulate the Virtual JTAG megafunction in your design.

13. Click Next. Page 6 of the MegaWizard Plug-In Manager appears.

14. Select any other files that you need in addition to the megafunction variation file and the megafunction

black box file.

15. Click Finish to create the Virtual JTAG megafunction and the files that you need in your project.

Related Information

Configuring the JTAG User Code Setting on page 41

Instantiating the Virtual JTAG Megafunction in Your Design

To properly connect the Virtual JTAG megafunction in your design, follow these basic connection rules:

• The tck output from the Virtual JTAG megafunction is the clock used for shifting the data in and out

on the TDI and TDO pins.

• The TMS output of the Virtual JTAG megafunction reflects the TMS input to the main JTAG circuit.

Altera Corporation

Virtual JTAG Megafunction (sld_virtual_jtag)

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Instantiating the Virtual JTAG Megafunction in Your Design

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2014.03.19

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Altera Virtual JTAG IP Core Bedienungsanleitung Seite 23