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LPC2212/4 and Altera Cyclone in same JTAG chain?

LPC2212/4 and Altera Cyclone in same JTAG chain?

2005-10-27 by wayne_s_cranwell

Has anyone used a Ulink USB-JTAG adaptor from within Kiel's uVision3
IDE, to target a Philips LPC2214 that is in a JTAG chain with an
Altera FPGA, e.g. cyclone?

The manual chain configuration of the IDE uVision tool allows one to
enter the Altera IDCODE and IR length etc. as well as the Philips
IDCODE and IR length etc. The Settings view then shows two devices -
and the Philips "radio" button is selected to indicate the device the
debugger should "talk" to.

However, a simple verify of internal flash fails repeatedly with "ARM
cannot be reset; Check JTAG cable" or similar.

My chain setup is as follows:

ULINK TDI--> Altera TDI --> Altera TDO --> LPC TDI --> LPC TDO -->
ULINK TDO. TMS and TCK are parallel to both.

If I physically isolate the Altera from the TDI/TDO chain (isolate
Altera and Short ULINK TDI to LPC TDI) such that there is only the LPC
in the chain, all is well.

Any experience/ comment welcomed.

Thanks
Wayne

Re: [lpc2000] LPC2212/4 and Altera Cyclone in same JTAG chain?

2005-10-27 by daedalworks@comcast.net

I don't have experience with this particular combination, but I've had similar problems with Xilinx FPGAs.  IIRC, the Xilinx tools wouldn't work with non-Xilinx parts in the chain, so we had to split the chain when debugging the FPGAs.   I've also seen situations where the order of devices in the chain makes a difference...

--DLM
Show quoted textHide quoted text
-------------- Original message -------------- 
Has anyone used a Ulink USB-JTAG adaptor from within Kiel's uVision3
IDE, to target a Philips LPC2214 that is in a JTAG chain with an
Altera FPGA, e.g. cyclone?

The manual chain configuration of the IDE uVision tool allows one to
enter the Altera IDCODE and IR length etc. as well as the Philips
IDCODE and IR length etc. The Settings view then shows two devices -
and the Philips "radio" button is selected to indicate the device the
debugger should "talk" to.

However, a simple verify of internal flash fails repeatedly with "ARM
cannot be reset; Check JTAG cable" or similar.

My chain setup is as follows:

ULINK TDI--> Altera TDI --> Altera TDO --> LPC TDI --> LPC TDO -->
ULINK TDO. TMS and TCK are parallel to both.

If I physically isolate the Altera from the TDI/TDO chain (isolate
Altera and Short ULINK TDI to LPC TDI) such that there is only the LPC
in the chain, all is well.

Any experience/ comment welcomed.

Thanks
Wayne






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Re: LPC2212/4 and Altera Cyclone in same JTAG chain?

2005-10-28 by wayne_s_cranwell

Thanks for your response DLM,

Yes, I'm trying to avoid splitting the chain - to keep the external
I/F to JTAG simpler. As you say, I anticipate problems when I approach
this with the altera tools (when they arrive) - but for now, I'm just
trying to see if the U-Link will play with the Philips with this
Altera in the way. I see no reason why it shouldn't work given the
manual chain setup allowed within uVision3.

Has anyone else tried this, or indeed anything like this? Perhaps even
just two LPC's in a series JTAG chain, maybe using the Auto chain
settings detect function?

W

--- In lpc2000@yahoogroups.com, daedalworks@c... wrote:
>
> I don't have experience with this particular combination, but I've
had similar problems with Xilinx FPGAs.  IIRC, the Xilinx tools
wouldn't work with non-Xilinx parts in the chain, so we had to split
the chain when debugging the FPGAs.   I've also seen situations where
the order of devices in the chain makes a difference...
Show quoted textHide quoted text
> 
> --DLM
> 
> -------------- Original message -------------- 
> Has anyone used a Ulink USB-JTAG adaptor from within Kiel's uVision3
> IDE, to target a Philips LPC2214 that is in a JTAG chain with an
> Altera FPGA, e.g. cyclone? .....
>

Re: LPC2212/4 and Altera Cyclone in same JTAG chain?

2005-10-31 by wayne_s_cranwell

Response from Reinhard at Keil to the same post on their discussion board:
 
"RE: JTAG chain compatability Ulink USB JTAG, uVision 
Currently there is a problem with JTAG chaining. However we will
address this issue in the next weeks.

Reinhard"

:(

--- In lpc2000@yahoogroups.com, "wayne_s_cranwell"
<wayne.cranwell@r...> wrote:
Show quoted textHide quoted text
>
> Thanks for your response DLM,
> 
> Yes, I'm trying to avoid splitting the chain - to keep the external
> I/F to JTAG simpler. As you say, I anticipate problems when I approach
> this with the altera tools (when they arrive) - but for now, I'm just
> trying to see if the U-Link will play with the Philips with this
> Altera in the way. I see no reason why it shouldn't work given the
> manual chain setup allowed within uVision3.
> 
> Has anyone else tried this, or indeed anything like this? Perhaps even
> just two LPC's in a series JTAG chain, maybe using the Auto chain
> settings detect function?
> 
> W
> 
> --- In lpc2000@yahoogroups.com, daedalworks@c... wrote:
> >
> > I don't have experience with this particular combination, but I've
> had similar problems with Xilinx FPGAs.  IIRC, the Xilinx tools
> wouldn't work with non-Xilinx parts in the chain, so we had to split
> the chain when debugging the FPGAs.   I've also seen situations where
> the order of devices in the chain makes a difference...
> > 
> > --DLM
> > 
> > -------------- Original message -------------- 
> > Has anyone used a Ulink USB-JTAG adaptor from within Kiel's uVision3
> > IDE, to target a Philips LPC2214 that is in a JTAG chain with an
> > Altera FPGA, e.g. cyclone? .....
> >
>

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