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A.1
Debug connectors
The V2M-Juno r2 motherboard provides one P-JTAG and two trace connectors for debug.
This section contains the following subsections:
•
•
A.1.1
P-JTAG connector
The V2M-Juno r2 motherboard provides one P-JTAG connector.
The P-JTAG connector also supports
Serial Wire Debug
(SWD).
The V2M-Juno r2 motherboard labels the P-JTAG connector as
CS_JTAG
.
The following figure shows the P-JTAG connector, J25.
1
19
2
20
Figure A-1 P-JTAG connector, J25
The following table shows the pin mapping for the P-JTAG signals on the P-JTAG connector, J25.
Table A-1 P-JTAG connector, J25, signal list
Pin Signal
Pin Signal
1
VTREFC (1V8)
2
CS_BS_VSUPPLY (1V8)
3
nTRST
4
GND
5
TDI
6
GND
7
SWDIO
/
TMS
8
GND
9
SWDCLK
/
TCK
10
GND
11
GND/RTCK
12
GND
13
SWO
/
TDO
14
GND
15
nSRST
16
GND
17
No connection/
EDBGRQ
18
GNDDETECT
19
No connection/
DBGACK
20
GND
Note
• Pins 9 and 17 have pulldown resistors to 0V.
• Pin 11 has a pulldown resistor to 0V. V2M-Juno r2 motherboard does not support adaptive clocking.
• Pins 3, 5, 7, 13, 15, and 19 have pullup resistors to 1V8.
• Pins 7 and 9 are dual-mode pins that enable the Juno r2 SoC to support both the JTAG and SWD
protocols.
Related concepts
A Signal Descriptions
A.1 Debug connectors
ARM 100114_0200_03_en
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Appx-A-122
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