Datasheet

Recommended Connectors
28 January 6, 2010
Recommended Connectors
Connection can be made by soldering wires directly to pads or using 0.1” pitch headers and
sockets.
ARM Target Pinout
In ICDI input and output mode, the Stellaris LM3S1968 Evaluation Kit supports ARM’s standard
20-pin JTAG/SWD configuration. The same pin configuration can be used for debugging over
serial-wire debug (SWD) and JTAG interfaces. The debugger software, running on the PC,
determines which interface protocol is used.
The Stellaris target board should have a 2x10 0.1” pin header with signals as indicated in
Table B-3. This applies to both an external Stellaris microcontroller target (Debug Output mode)
and to external JTAG/SWD debuggers (Debug Input mode).
ICDI does not control RST
(device reset) or TRST (test reset) signals. Both reset functions are
implemented as commands over JTAG/SWD, so these signals are not necessary.
It is recommended that connections be made to all GND pins; however, both targets and external
debug interfaces must connect pin 18 and at least one other GND pin to GND.
Table B-2. Recommended Connectors
Pins 1-66 (2 x 33 way) PCB Socket Sullins PPPC332LFBN-RC Digikey S7136-ND
Pin Header Sullins PEC20DAAN Digikey S2012E-20-ND
Table B-3. 20-Pin JTAG/SWD Configuration
Function Pin Pin Function
VCC (optional) 1 2 nc
nc 3 4 GND
TDI 56GND
TMS 78GND
TCK 910GND
nc 11 12 GND
TDO 13 14 GND
nc 15 16 GND
nc 17 18 GND
nc 19 20 GND