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User’s Guide
SWRU321A
– May 2013
Page 30/32
7.3 Custom Strapping
If the external board does not have a 20-pin ARM JTAG connector nor a 10-pin ARM Cortex
connector, the needed signals may be strapped from the onboard XDS100v3 Emulator to the
external target board.
Make sure all the jumpers on the XDS bypass header (P408) are mounted and that the jumper is
removed from header J503. Table 17 shows the signals that must be strapped between the
SmartRF06EB and the target board. Table 18 shows additional signals that are optional or
needed for debugging using 4-pin JTAG. Figure 24 shows where the signals listed in Table 17
and Table 18 can be found on the 20-pin ARM JTAG header.
EB Signal Name
EB
Breakout
Description
VDD_SENSE
P409.1
Target voltage supply
GND
P409.4
Common ground for EB and external board
RF2.1_JTAG_TCK
P409.9
Test Clock
RF2.4_JTAG_TMS
P409.7
Test Mode Select
Table 17
– Debugging external target: Minimum strapping (cJTAG support)
EB Signal Name
EB
Breakout
Description
RF2.17_JTAG_TDI
P409.5
Test Data In (optional for cJTAG)
RF2.19_JTAG_TDO
P409.13
Test Data Out (optional for cJTAG)
RF2.15_RESET
¯¯¯¯¯¯¯¯¯¯¯¯¯
P409.15
Target reset signal (optional)
Table 18
– Debugging external target: Optional strapping
VDD_SENSE
RF2.17_JTAG_TDI
RF2.4_JTAG_TMS
RF2.1_JTAG_TCK
RF2.19_JTAG_TDO
GND
2-pin cJTAG
4-pin JTAG
Optional
+
RF2.15_RESET
Figure 24
– ARM JTAG header (P409) with strapping to debug external target
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