
The figure below shows the input and output ports of the virtual JTAG megafunction. The JTAG TAP
controller outputs and TMS signals are used for informational purposes only. These signals can be exposed
using the Create primitive JTAG state signal ports option on page 3 of the MegaWizard Plug-In Manager.
Figure 7: Input and Output Ports of the Virtual JTAG Megafunction
Inputs
One-Hot Decoded Outputs
from the SLD Hub FSM
One-Hot Decoded Outputs
from the TAP Controller
Input Ports
Table 2: Input Ports for the Virtual JTAG Megafunction
CommentsDescriptionRequiredPort name
Writes to the TDO pin on the
device.
Yestdo
Input port [SLD_IR_WIDTH-
1..0] wide. Specify the width
of this bus with the SLD_IR_
WIDTH parameter.
Virtual JTAG instruction register
output. The value is captured
whenever virtual_state_cir is
high.
Noir_out[]
Virtual JTAG Megafunction (sld_virtual_jtag)
Altera Corporation
Send Feedback
UG-SLDVRTL
Input Ports
10
2014.03.19
Komentarze do niniejszej Instrukcji