10-pin 1.27mm CoreSight to 20-pin 2.54mm ARM Converter
Related to the just described converter IASAM40HSSTP-JTAGSAM, the target development
board can also feature a 20-pin 2.54 mm ARM target debug connector instead of the 10-pin
1.27 mm CoreSight. To connect the C part of the IASAM40HSSTP-JTAGSAM to this connector,
another converter IA10PINCS20PINARM-1 is required, converting from ARM 20-pin 2.54mm to
10-pin 1.27 CoreSight. The IA10PINCS20PINARM-1 connects to the target and then the 'C' point
of the IASAM40HSSTP-JTAGSAM connects on top of it.
This converter is required only when the
providing the 20-pin 2.54 mm ARM target debug connector exposing only the debug interface
without the ARM HSSTP trace interface. No trace interface (e.g. SWO, parallel) is supported with
this converter. The converter is delivered along the Active Probe.
The following pinout is valid on the target side:
Signal Direc-
Signal Descrip-
tion
tion
Reference
I
Voltage
O
JTAG
O
JTAG
I/O
JTAG/SWD
O
JTAG/SWD
Not Connected
I
JTAG/SWD
I/O
Reset
Not Connected
Not Connected
*
nTRST is permanently pulled up
Signal Direction is described from the BlueBox perspective.
Ordering code
ARM HSSTP II Active Probe
Signal
Pin
Vref
1
nTRST*
3
TDI
5
TMS/SWDIO
7
CLK/SWCLK
9
NC
11
TDO
13
nRESET
15
NC
17
NC
19
20-pin CoreSight pinout
IA10PINCS20PINARM-1
is connected to the target
Signal Descrip-
Pin
Signal
2
NC
Not Connected
4
GND
6
GND
8
GND
10
GND
12
GND
14
GND
16
GND
18
GND
20
GND
Signal Direc-
tion
tion
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
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