BeagleBoard JTAG Adapter by TI

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Texas Instruments uses (e.g. on BeagleBoard) a variation on the standard ARM 2x7 JTAG header:

ARM PIN TI
Vcc 1 TMS
GND 2 nTRST
nTRST 3 TDI
GND 4 GND
TDI 5 Vcc
GND 6 NC
TMS 7 TDO
GND 8 GND
TCK 9 RTCK
GND 10 GND
TDO 11 TCK
nRST 12 GND
Vcc 13 EMU-0
GND 14 EMU-1

To adapt from standard 20pin JTAG header you need a adapter. As example the Lauterbach one:


Jtag-ti-front.jpg


Jtag-ti-back.jpg