The T1 card has a connector that serves as a maintenance port for UART and JTAG access, located at the rear of the card (opposite side of the I/O bracket).
The maintenance port on the T1 card allows developers to access the following internal buses on the card:
- JTAG chain to SoCs
- JTAG chain to clock synchronizer
- UART to SC
- UART to MPSoC ZU19
- UART to RFSoC ZU21