SPRAD21E May 2023 – February 2024 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP , AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-Q1 , AM62P , AM62P-Q1
JTAG and EMU used
Recommend to connect the JTAG (TDI, TCK, TMS and TRSTn) and EMU (EMU0 and EMU1) signals as per the Pin Connectivity Requirements section of the device-specific data sheet.
It is recommended to connect a series resistor (22 Ω) for the TDO (close to processor) signal. It is recommended to add external ESD protection for all JTAG and EMU signals when the signals interface to external connector. EMU 0/1 signals support boot sequence debug after cold reset (MCU_PORz).
TDO pullup is optional and depends on the target used.
Refer On-Chip Debug chapter of the device specific TRM.
JTAG and EMU not used
For connecting the JTAG and EMU signals, refer the Pin Connectivity Requirements section of the device-specific data sheet.
During custom board design, TI recommends provisioning at least a minimal JTAG port including EMU0/1 connected to test points or a header footprint to support early prototype debugging. JTAG components can be DNI in the production version of the board, if desired. Also provide provision to add recommended pulls as per Pin Connectivity Requirements section and external ESD protection.