ST STLINK-V3SEGT, User Manual

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UM2448 Rev 5 23/42
UM2448 Board connectors
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8.1.2 STDC14 (STM32 JTAG/SWD and VCP)
The STDC14 CN1 connector allows the connection to an STM32 target by means of the
JTAG or SWD protocol, respecting (from pin 3 to pin 12) the ARM10 pinout (Arm Cortex
debug connector). But it also advantageously provides two UART signals for the Virtual
COM port. The related pinout for the STDC14 connector is listed in
Table 6 .
The used connector is SAMTEC FTSH-107-01-L-DV-K-A.
8.2 Connectors on MB1440 board
8.2.1 STDC14 (STM32 JTAG/SWD and VCP)
The STDC14 CN1 connector on MB1440 replicates the STDC14 CN1 connector from the
MB1441 board. Refer to
Section 8.1.2 for details.
8.2.2 Legacy Arm 20-pin JTAG/SWD IDC connector
The CN2 connector allows the connection to an STM32 target in the JTAG or SWD mode.
Its pinout is listed in
Table 7 . It is compatible with the pinout of ST-LINK/V2.
4 ID -
5 GND GND
Table 5. USB Micro-B connector pinout CN5 (continued)
Pin
number
Pin
name
Function
Table 6. STDC14 connector pinout CN1
Pin No. Description Pin No. Description
1 Reserved
(1)
1. Do not connect on target.
2 Reserved
(1)
3 T_VCC
(2)
2. Input for STLINK-V3SET.
4 T_JTMS/T_SWDIO
5 GND 6 T_JCLK/T_SWCLK
7 GND 8 T_JTDO/T_SWO
(3)
3. SWO is optional, required only for Serial Wire Viewer (SWV) trace.
9 T_JRCLK
(4)
/NC
(5)
4. Optional loopback of T_JCLK on the target side, required if loopback removed on the STLINK-V3SET side.
5. NC means not required for the SWD connection.
10 T_JTDI/NC
(5)
11 GNDDetect
(6)
6. Tied to GND by STLINK-V3SET firmware; may be used by the target for detection of the tool.
12 T_NRST
13 T_VCP_RX
(7)
7. Output for STLINK-V3SET
14 T_VCP_TX
(2)