On Wed, Jan 18, 2012 at 11:37:54PM +0100, Freddie Chopin wrote:
> 
> John - could you send full marking of the chip to the list (especially 
> date code)? My LPC2103 which works perfectly without srst_pulls_trst is 
> marked as follows:

Quite new board, but OLD chip.

Philips logo
LPC2129FBD64
CD2096  02.
TPN0437A

Looks like 2004 week 37 rev A

I wouldn't swear that the "." is a dot.

Is this also why it wants CPUTAPID 0x4... instead of 0xc...?

---

I have some other LPC boards but they have NXP chips and were OK with
the cfg files or worked (as far as I tested): LPC2378 and LPC2919.
Chips have 2008 date codes.  So those must also have worked OK without
the srst_pulls_trst as I checked them before the 2129.

I've read openocd.pdf about that setting and have the board schematics
plus chip data sheet etc.  I don't see much that would have helped me
use that setting.  Is there a Philips/NXP data sheet that I failed to
find and you can point me to that explains what the chip(s) need for
their JTAG/etc settings, please?

Similar question about the openocd.pdf description of trst_and_srst.
They look independent on the schematics so why that setting, i.e. why
the _and_?

John

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