Hi, I'm trying to work out a problem I'm having programming a LPC2194. I've posted a question on this already here. See: http://groups.yahoo.com/group/lpc2000/message/4049 I was looking in the LPC22194 & LPC2294 datasheets and I saw that the JTAG pins (P1.26-P1.31) PINSEL register was set to P1.26/RTCK at reset. The LPC2194 datasheet says the JTAG's PINSEL register is set to '0' on reset. Does the JTAG PINSEL register on the LPC2194 need to be set to '1' for me to program the LPC2194 via JTAG? The datasheet says the PINSEL is set to '0' at reset, this seems wrong to me. Seems it should be the same as the LPC2294. That way it always comes up with the debug port enabled. I was setting the PINSE2 register to 0x00000000 after my program was up and running because I need to use some of the TRACESYNC pins as IO. If I put in a new LPC2194, take out the setting PINSEL2 to 0x0000000, will the JTAG work? I'll try this later and see if it works. I just hate to pull any more LPC2194's off of the PCB...
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LPC2194 & LPC2294 JTAG ports
2004-11-15 by gregdeuerling
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