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•
When using the HSEC DC barrel jack power input:
– A power adapter that is at least 15 W
Power supply solutions that are NOT compatible with the AM263x Control Card:
•
When using USB type-C input:
– Any USB adapter cables such as:
•
Type-A to type-C
•
micro-B to type-C
•
DC barrel jack to type-C
– 5 V, 1.5 A power adapter with USB-C captive cable or receptacle
– PC USB type-C port not capable of 3 A
3.1.1 Power Input Using USB Type-C Connector
The AM263x Control Card can be 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 the CC1 and CC2
signals. On this EVM, the CC1 and CC2 from the USB type-C connector are interfaced to the port controller
IC (TUSB320LAIRWBR). This device uses the CC pins to determine port attach/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 the IC in 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 load switch (TPS22965DSGT) to provide the VBUS_MAIN supply which
powers other regulators that create the power rails for the device.
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.
SPRUJ09C – MARCH 2022 – REVISED FEBRUARY 2023
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Figure 3-1. USB Type-C Power Delivery Classification
Copyright © 2023 Texas Instruments Incorporated
AM263x Control Card Hardware User's Guide
Board Setup
9
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