20-pin 2.54mm Arm Debug Adapter
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This debug adapter is used to connect the iC5000 and the iC5700 BlueBox to the Cortex-A, the Cortex-R, the Arm7 and the Arm9 based target. It’s used to connect to the embedded target featuring a 20-pin 2.54 mm pitch target debug connector with the Arm pinout.
The debug adapter connects to the 25 cm 40-pin ribbon cable coming from the BlueBox and to the target debug connector on the other side.
The following pinout is valid on the target side:
Signal Direction |
Signal Description |
Signal |
Pin |
Pin |
Signal |
Signal Description |
Signal Direction |
|---|---|---|---|---|---|---|---|
I |
Reference Voltage |
Vref |
1 |
2 |
NC |
Not Connected |
|
O |
JTAG |
nTRST |
3 |
4 |
GND |
Ground |
|
O |
Not Connected / JTAG |
NC/TDI |
5 |
6 |
GND |
Ground |
|
I/O / O |
SWD/JTAG |
SWDIO/TMS |
7 |
8 |
GND |
Ground |
|
O |
SWD/JTAG |
SWDCLK/TCK |
9 |
10 |
GND |
Ground |
|
I |
Return TCK |
RTCK |
11 |
12 |
GND |
Ground |
|
I |
SWD/JTAG |
SWO/TDO |
13 |
14 |
GND |
Ground |
|
I/O |
Reset |
nRESET |
15 |
16 |
GND |
Ground |
|
O |
Debug Request |
DBGRQ |
17 |
18 |
GND |
Ground |
|
I |
Debug Acknowledge |
DBACK |
19 |
20 |
GND |
Ground |
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20-pin Arm pinout
Signal Direction is described from the BlueBox perspective.
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When initially connecting the BlueBox to a target, ensure the debug adapter pinout matches the Target connector to avoid potential hardware failure. |
The debug adapter features resettable fuses on all pins except for pin 11 and 19. These fuses protect debug signals against over current and cycle back to a conductive state after the excessive current fades away.
The debug adapter connects to the target via a 20-pin 2.54 mm connector, for example Yamaichi FAS-2001-2101-2-0BF. A target should feature a matching part, for example WÜRTH ELEKTRONIK 61202021621.
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Make sure this adapter fits on your target connector - check Cross Table. |
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Refer to Hardware Setup and Configuration Tutorial to get more information on how to connect the hardware. |
