4.11 UART Interface
The LaunchPad consists of five UART interfaces where four of the interfaces come from the main domain of the
SoC and one comes from the MCU domain.
• Two UART ports from the main domain of the SoC (Main_UART2 and Main_UART4) are terminated on the
BoosterPack expansion connectors.
• Two UART, one from the MCU domain (MCU_UART0) and one from the main domain of the SoC
(MAIN_UART1) are terminated on two on-board 1x6 headers. There is a buffer (SN74CB3Q3125PWR) used
to isolate between the connectors and the SoC.
• One UART port from the main domain of the SoC (Main_UART0) is connected to a
buffer (SN74AVC4T245PW) isolated between the SoC and the on-board emulator XDS110
(TM4C1294NCPDTT3R)
Figure 4-16. UART Interface
Hardware Description
SPRUJ12B – AUGUST 2021 – REVISED OCTOBER 2022
AM243x LaunchPad™ Development Kit User's Guide
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