ST Nucleo-64 STM32U3 User Manual page 17

Figure 9 shows the STDC14/MIPI10 connector (CN4).
STDC14/MIPI10
Table 6. STDC14/MIPI10 debug connector (CN4) pinout
MIPI10 pin
-
-
1
2
3
4
5
6
7
8
9
10
-
-
1. Not connected on the Nucleo-64 board
2. Output for the Nucleo-64 board
3. SWO is optional and required only for Serial Wire Viewer (SWV) trace.
4. Optional loopback of JTCK on the target side
5. NC means not required for the SWD connection, or not connected on the Nucleo-64 board
6. Tied to GND. The external debugger might use it.
7. Input for the Nucleo-64 board
UM3062 - Rev 2
Figure 9. STDC14/MIPI10 debug connector (CN4)
(CN4)
Table 6. STDC14/MIPI10 debug connector (CN4) pinout
STDC14 pin CN4
1 NC
2 NC
3 VDD
4 T_SWDIO
5 GND
6 T_SWCLK
7 GND
8 T_SWO
9 NC
10 T_JTDI
11 GNDDetect
12 T_NRST
13 T_VCP_RX
14 T_VCP_TX
describes the STDC14/MIPI10 connector (CN4) pinout.
Function
(1)
Reserved
(1)
Reserved
(2)
Target VDD
Target SWDIO using SWD protocol or target JTMS (T_JTMS) using
JTAG protocol
Ground
Target SWCLK using SWD protocol or target JTCK (T_JTCK) using
JTAG protocol
Ground
Target SWO using SWD protocol or target JTDO (T_JTDO) using JTAG
(3)
protocol (SB44 ON)
(4) (5)
T_JRCLK /NC
Not used by SWD protocol, target JTDI (T_JTDI) using JTAG protocol
GND detection for plug indicator
Target NRST using SWD protocol or target JTMS (T_JTMS) using
JTAG protocol
Target Rx used for VCP (with UART supporting bootloader)
Target TX used for VCP (with UART supporting bootloader)
UM3062
Hardware layout and configuration
(6)
(7)
(2)
page 17/47