Texas Instruments AM243 Series, User Manual

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4.4 Reset
Figure 4-5 shows the reset architecture of the AM243x LaunchPad.
Figure 4-5. Reset Architecture
The SoC has the following resets:
• MCU_PORz is the power ON/Cold Reset input for MCU and MAIN domain
• PORz_OUT is the power ON reset status output from MAIN and MCU domain
• MCU_RESETz is the warm reset input for MCU domain
• MCU_RESETSTATz is the warm reset status output for the MCU domain
• RESET_REQz is the warm reset input for the MAIN domain
• RESETSTATz is the warm reset status output for the MAIN domain
Three push button switches are available to provide reset for MCU_PORz, MCU_RESETz and RESET_REQz
as seen in
Section 3.2 .
MCU_PORz signal is provided by the outputs of a voltage monitor IC (TPS386000RGPR) for the core and
peripheral voltages where the enable of this voltage monitor is controlled by the PORz signal from the test
automation header or push button switch (SW1).
MCU domain warm reset (MCU_RESETz) is provided from a push button switch (SW2)
Main domain warm reset (SoC_RESET_REQz) is provided by the Warm Reset signal from the test automation
header or a push button switch (SW3).
Upon Power on Reset, all peripheral devices connected to MCU domain get reset by MCU_RESETSTATz.
One User input interrupt is connected to one of the GPIO of SoC.
Hardware Description www.ti.com
60 AM243x LaunchPad™ Development Kit User's Guide SPRUJ12B – AUGUST 2021 – REVISED OCTOBER 2022
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