Limitations And Hardware Configuration - Jtag (Cn14) Or Mipi10 (Cn16); Interface; Table 6. Stdc14/Mipi10 Debugging Connector; Table 7. Stdc14/Mipi10 Debugging Connector (Cn16) - STMicroelectronics STM32H7B3I-EVAL User Manual

6.4.3

Limitations and hardware configuration - JTAG (CN14) or MIPI10 (CN16)

Limitations: STM32H7B3LIH6Q JTAG cannot be connected at the same time to STLINK-V3E and CN14 or CN16
connector. To use JTAG on the CN14 or CN16 connector, it is necessary to disconnect the JTAG signals from
STLINK-V3E (JTMS, JTCK, JTDO, and NRST).
• To do so, R409, R401, R399, and R398 must be removed.
6.4.4

Interface

Pin number
1 (STDC14)
3 (MIPI10)
5 (MIPI10)
7 (MIPI10)
9 (MIPI10)
11 (MIPI10)
13 (STDC14)
MIPI10 STDC14
pin pin
- 1
- 2
1 3
2 4
3 5
4 6
5 7
6 8
7 9
8 10
9 11
10 12
- 13
- 14
UM2662 - Rev 4
Figure 7. STDC14/MIPI10 debugging connector (CN16)
Table 6. STDC14/MIPI10 debugging connector
Description
NC
+3.3 V
GND
GND
KEY (NC)
GNDDetect
VCP_USART_RX/PB14 or PA2
Table 7. STDC14/MIPI10 debugging connector (CN16)
CN16 Designation
NC Reserved
NC Reserved
T_VCC Target VCC
T_SWDIO Target SWDIO using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
GND Ground
T_SWCLK Target SWCLK using SWD protocol or target JCLK (T_JCLK) using JTAG protocol
GND Ground
T_SWO Target SWO using SWD protocol or target JTDO (T_JTMS) using JTAG protocol
KEY (NC) KEY (NC)
Not used by SWD protocol. Target JTDI (T_JTDI) using the JTAG protocol, only for
T_JTDI
external tools
GNDDetect GND detection for plug indicator, used on SWD and JTAG neither
T_NRST Target NRST using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
T_VCP_RX Target Rx used for VCP (must be the UART dedicated to the bootloader)
T_VCP_TX Target Tx used for VCP (must be the UART dedicated to the bootloader)
Hardware layout and configuration
Pin number
2 NC (STDC14)
4 (MIPI10) SWDIO-TMS/PA13
6 (MIPI10) SWCLK-TCK/PA14
8 (MIPI10) SWO-TDO/PB3
10 (MIPI10)
12 (MIPI10)
14 (STDC14) VCP_USART_TX/PB15 or PA3
UM2662
Description
TDI/PA15
RESET#
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