FPGA Central

hi all

has anyone got any documents or refferals for 'J Tag Protocol ' , for
reconfigurable hardware.
i would appreciate if any tutorials or realted links/documents can b
passed on .
thanks
abhishek

"ABS" <abhishekbedi@gmail.com> schrieb im Newsbeitrag
news:1134518668.567217.216410@o13g2000cwo.googlegr oups.com...
> hi all
>
> has anyone got any documents or refferals for 'J Tag Protocol ' , for
> reconfigurable hardware.

I bet almost anyone here has...

but JTAG primary function is BOUNDARY SCAN and not hardware reconfiguration,
even though lots (virtually all) current FPGA allow configuration over JTAG
interface

> i would appreciate if any tutorials or realted links/documents can b
> passed on .
> thanks
> abhishek
>

it takes a few seconds to find those documents by googling for them, if you
are too lazy for that there is no one who can help you.

Antti
PS I admire 'creative lazyness' but not people who are just lazy.

Antti Lukats wrote:
> "ABS" <abhishekbedi@gmail.com> schrieb im Newsbeitrag
> news:1134518668.567217.216410@o13g2000cwo.googlegr oups.com...
> > hi all
> >
> > has anyone got any documents or refferals for 'J Tag Protocol ' , for
> > reconfigurable hardware.
>
> I bet almost anyone here has...
>
> but JTAG primary function is BOUNDARY SCAN and not hardware reconfiguration,
> even though lots (virtually all) current FPGA allow configuration over JTAG
> interface
>
> > i would appreciate if any tutorials or realted links/documents can b
> > passed on .
> > thanks
> > abhishek
> >
>

On the grounds I want to find out if the OP is creatively lazy...

The relevant specifications are:

for pure JTAG (testing) IEEE 11.94.1 - (year) [there are a number of
releases. Most devices comply with the 1994 release]
For In System programmable devices using JTAG
IEEE1536. Note that the 'BSDL' files for ISP specify the 1536
compatibility (See Altera or Xilinx docs)

For testing cores with 'standard' interfaces, such as EJTAG (MIPS) or
such as ARM core access, you would need to search for the specific
information. EJTAG and ARM core JTAG access protocols are published,
but not necessarily free.
Both 1194 and 1536 are published, but not free, although there is a
wealth of available information if you want to learn about it.

Cheers

PeteS

> it takes a few seconds to find those documents by googling for them, if you
> are too lazy for that there is no one who can help you.
>
> Antti
> PS I admire 'creative lazyness' but not people who are just lazy.

The descriptions you give are accurate but the standard numbers are
1149.1 for boundary-scan and 1532 for in-system configuration. Both are
published by the IEEE and can be purchased from the IEEE store.

PeteS wrote:
> Antti Lukats wrote:
>
>>"ABS" <abhishekbedi@gmail.com> schrieb im Newsbeitrag
>>news:1134518668.567217.216410@o13g2000cwo.google groups.com...
>>
>>>hi all
>>>
>>>has anyone got any documents or refferals for 'J Tag Protocol ' , for
>>>reconfigurable hardware.
>>
>>I bet almost anyone here has...
>>
>>but JTAG primary function is BOUNDARY SCAN and not hardware reconfiguration,
>>even though lots (virtually all) current FPGA allow configuration over JTAG
>>interface
>>
>>
>>>i would appreciate if any tutorials or realted links/documents can b
>>>passed on .
>>>thanks
>>>abhishek
>>>
>>
>
> On the grounds I want to find out if the OP is creatively lazy...
>
> The relevant specifications are:
>
> for pure JTAG (testing) IEEE 1149.1 - (year) [there are a number of
> releases. Most devices comply with the 1994 release]
> For In System programmable devices using JTAG
> IEEE1532. Note that the 'BSDL' files for ISP specify the 1536
> compatibility (See Altera or Xilinx docs)
>
> For testing cores with 'standard' interfaces, such as EJTAG (MIPS) or
> such as ARM core access, you would need to search for the specific
> information. EJTAG and ARM core JTAG access protocols are published,
> but not necessarily free.
> Both 1149.1 and 1532 are published, but not free, although there is a
> wealth of available information if you want to learn about it.
>
> Cheers
>
> PeteS
>
>
>>it takes a few seconds to find those documents by googling for them, if you
>>are too lazy for that there is no one who can help you.
>>
>>Antti
>>PS I admire 'creative lazyness' but not people who are just lazy.
>
>

hey mate
that was just i heard from some one about the protocol while on the
group that i posted it !
I have already googled it--it's pretty basic for anyone to google the
general stuff,but if some one asks u over the group then obviously it
has to be some thing special which every one doesnot have acess to !
thanks anyways for ur efforts
abhishek

"ABS" <abhishekbedi@gmail.com> schrieb im Newsbeitrag
news:1134635322.265145.307520@z14g2000cwz.googlegr oups.com...
> hey mate
> that was just i heard from some one about the protocol while on the
> group that i posted it !
> I have already googled it--it's pretty basic for anyone to google the
> general stuff,but if some one asks u over the group then obviously it
> has to be some thing special which every one doesnot have acess to !
> thanks anyways for ur efforts
> abhishek
>
you asked in very unclear manner... so my non so friendly reply was based on
that, there are lots of documents about JTAG standards but the original
standard docucs are on 'paid only' bases unfortunatly. you did not ask for
special just thing, just 'any docuements...'

the 1149.1 is no problems to handle without having the access to the
original specification docu, the 1532 is a bit harder just reading the 1532
BSDL files helps a bit but having the 1532 real documentation would be
better of course

Antti