2.4 BoosterPacks
The AM243x LaunchPad development kit provides an easy and inexpensive way to develop applications with the
AM243x Series microcontroller. BoosterPacks are add-on boards that follow a pin-out standard created by Texas
Instruments. The TI and third-party ecosystem of BoosterPacks greatly expands the peripherals and potential
applications that you can easily explore with the AM243x LaunchPad.
You can also build your own BoosterPack by following the design guidelines on TI’s website. Texas Instruments
even helps you promote your BoosterPack to other members of the community. TI offers a variety of avenues for
you to reach potential customers with your solutions.
2.5 Compliance
All components selected meet RoHS and REACH compliance.
Components installed on the product are sensitve to Electrostatic Discharge (ESD). It is recommended this
product be used in an ESD controlled environment. This may include a temperature and/or humidity controlled
environment to limit the buildup of ESD. It is also recommended to use ESD protection such as wrist straps and
ESD mats when interfacing with the product.
The product is used in the basic electromagnetic environment as in laboratory conditions, and the applied
standard is as per EN IEC 61326-1:2021.
3 Board Setup
3.1 Power Requirements
The AM243x LaunchPad is powered from a 5 V, 3A USB type-C input. The following sections describe the
power distribution network topology that supplied the AM243x LaunchPad, it is supporting components and the
reference voltages.
3.1.1 Power Input Using USB Type-C Connector
The AM243x LaunchPad is powered through a USB type-C connection. The USB Type-C source should be
capable of providing 3A at 5 V and should advertise the current sourcing capability through CC1 and CC2
signals. On AM243x LP, the CC1 and CC2 from USB type-C connector are interfaced to the port controller IC
(TUSB320LAIRWBR). This device uses the CC pins to determine port attach and detach, cable orientation, role
detection, and port control for Type-C current mode. The CC logic detects the Type-C current mode as default,
medium, or high depending on the role detected.
The Port pin is pulled down to ground with a resistor to configure it as upward facing port (UFP) mode.
VBUS detection is implemented to determine a successful attach in UFP mode. The OUT1 and OUT2 pins are
connected to a NOR gate. Active low on both the OUT1 and OUT2 pins advertises high current (3A) in the
attached state which enables the VUSB_5V0 power switch to provide the VSYS_5V0 supply which powers other
regulators and LDOs.
In UFP mode, the port controller IC constantly presents pull-down resistors on both CC pins. The port controller
IC also monitors the CC pins for the voltage level corresponding to the Type-C mode current advertisement
by the connected DFP. The port controller IC de-bounces the CC pins and waits for VBUS detection before
successfully attaching. As a UFP, the port controller device detects and communicates the advertised current
level of the DFP to the system through the OUT1 and OUT2 GPIOs.
The AM243x LP power requirement is 5 V at 3A and if the source is not capable of providing the required
power, the output at the NOR gate becomes low that disables the VUSB_5V0 power switch. Therefore, if the
power requirement is not met, all power supplies except VCC3V3_TA will remain in the off state. The board gets
powered on completely only when the source can provide 5 V at 3A.
Kit Overview
SPRUJ12B – AUGUST 2021 – REVISED OCTOBER 2022
AM243x LaunchPad™ Development Kit User's Guide
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