Can VHDL be implemented JTAG TAP controller?

B

Bruce Sam

Guest
I am considering using EPM7128 to implement SN74ACT8990,which is a
JTAG TAP controller.And the work is so hard and interesing.Is it
possible what I do?Are there VHDL code has been implemented JTAG TAP
controller?
 
Hi Laurent,
SN74ACT8990 is linked
here:http://www-s.ti.com/sc/ds/sn74act8990.pdf.
 
Sorry Laurent,I haven't a full description of SN74ACT8990.So I
think my original work is wrong and should be stop.Thanks you apply.
 
Laurent Gauch <laurent.gauch@DELETEALLCAPSamontec.com> wrote in message news:<416146FE.3010704@DELETEALLCAPSamontec.com>...
Bruce Sam wrote:
Hi Laurent,
SN74ACT8990 is linked
here:http://www-s.ti.com/sc/ds/sn74act8990.pdf.

There are no way to write VHDL code with the sn74act8990.pdf.
The sn74act8990.pdf is not a complet description of sn74act8990, but
only a description of the device interface. All other things you need to
describe VHDL register level of the sn74act8990 is skipped in the
sn74act8990.pdf. With sn74act8990.pdf you are using a black-block.

Larry
www.amontec.com
Click to expand...
Does the specification helps ? IEEE1149.1
 
Wong wrote:

Laurent Gauch <laurent.gauch@DELETEALLCAPSamontec.com> wrote in message news:<416146FE.3010704@DELETEALLCAPSamontec.com>...

Bruce Sam wrote:

Hi Laurent,
SN74ACT8990 is linked
here:http://www-s.ti.com/sc/ds/sn74act8990.pdf.


There are no way to write VHDL code with the sn74act8990.pdf.
The sn74act8990.pdf is not a complet description of sn74act8990, but
only a description of the device interface. All other things you need to
describe VHDL register level of the sn74act8990 is skipped in the
sn74act8990.pdf. With sn74act8990.pdf you are using a black-block.

Larry
www.amontec.com


Does the specification helps ? IEEE1149.1
Click to expand...
No, it doesn't
-> because the sn74act8990 is a JTAG controller with internal register,
shift-register ...
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top