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Altera_Forum's avatar
Altera_Forum
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14 years ago

to jtag conversion ?

hy, How can i convert a programming file (recieved by uart) - to jtag - ? Is there an interface which converts from serial/parallel to jtag (tck, tms, tdi) ???
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

the jrunner is no good for me because im interested in doing the conversion by hw - in the cpld (and not by a processor),

ill try to explain :

i have 2 boards, my goal is to program the cpld at board# 2 .

in board# 1: i have a processor which converts the programming file into uart and transmmits this data - by uart - to board# 2.

in board# 2 : i have a cpld (no processor) which recieves uart data from board# 1 , and wants to convert this data back into jtag format , in order to program itself (with real ISP option of course).

in case of active serial programming ( for example), i would of used the Active Serial Memory Interface (ALTASMI_PARALLEL) Megafunction , which provides access to programing the epcs device (parallel input to active serial output) . but in my case i want it to be a parallel input to jtag output .

Is there such a megafunction - ?

hoped i made myself clear.

thanks again