====Olimex USB OCD H====
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ARM JTAG programming and debugging interface which can also supply 5V power from USB and
provide a standard RS232 serial interface.

See the [[:boards:due|Arduino due]] (clone pictured) for the command line operation.
===Pinout===

==JTAG==
<code>
 1 VREF      2 VREF
 3 TTRST_N   4 GND
 5 TTDI      6 GND
 7 TTMS      8 GND
 9 TTCK     10 GND
11 TRTCK    12 GND
13 TTDO     14 GND
15 TSRST_N  16 GND
17 NC       18 GND
19 5V       20 GND

Pin 19=5V if VREF=NC
</code>

==RS232==

DB9 plug
<code>
1 2 3 4 5
 6 7 8 9
</code>

<code>
1 DCD
2 RX
3 TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 NC
</code>
===Resources===

[[https://www.olimex.com/Products/ARM/JTAG/ARM-USB-OCD-H/|Product page]]

[[https://www.olimex.com/Products/ARM/JTAG/_resources/ARM-USB-OCD_and_OCD_H_manual.pdf|User manual]]