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Re: [lpc2000] Debug JTAG - SCAN_N

2006-04-04 by Dominic Rath

That's a bug in the LPC2000s. I asked Philips support, but they didn't know 
(or didn't care) about it. Anyway, it's not a real problem, you just can't 
rely on the SCAN_N value to ensure JTAG communication is correct.

Regards,

Dominic

On Tuesday 04 April 2006 22:01, krisgorn wrote:
> In datasheet of ARM7TDMI-S is writing that instruction SCAN_N load 0x8
> value into register but I always get 0x0 value on LPC2138 (and another
> LPC2000 family chips).
> When I run my code with ARM7TDMI core chips (AT91SAM7, OKI ML67) I get
> proper value 0x8.
> Any suggestions?
>
> Regards

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