SPRUJ73 December   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
      1. 1.1.1 Read This First
        1. 1.1.1.1 Sitara MCU+ Academy
        2. 1.1.1.2 Important Usage Notes
    2. 1.2 Kit Contents
  6. 2Hardware Description
    1. 2.1 Component Identification
    2. 2.2 Power Requirements
      1. 2.2.1 Power Input Using USB Type-C Connector
      2. 2.2.2 Power Status LEDs
      3. 2.2.3 Power Tree
    3. 2.3 Functional Block Diagram
    4. 2.4 Header Information
    5. 2.5 Interfaces
      1. 2.5.1 ADC
      2. 2.5.2 LIN
      3. 2.5.3 MCAN
      4. 2.5.4 TRACE/GPMC Muxing Scheme
      5. 2.5.5 GPMC Memory Interface
        1. 2.5.5.1 PSRAM
        2. 2.5.5.2 GPMC Memory Footprint
        3. 2.5.5.3 NOR FLASH
      6. 2.5.6 TI 14-Pin Header
      7. 2.5.7 MIPI-60 Connector
    6. 2.6 HSEC Pinout
  7. 3Additional Information
    1. 3.1 If You Need Assistance
    2.     Trademarks
  8. 4References
    1. 4.1 Reference Documents
    2. 4.2 Other TI Components Used in This Design
  9. 5Revision History

2.2.1 Power Input Using USB Type-C Connector

The AM263x controlCARD Docking Station is powered through a USB Type-C connection. The USB Type-C source is capable of providing 3A at 5V 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 (TUSB320IRWBR). 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_USBC 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.

The AM263x controlCARD Docking Station's power requirement is 5V 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 VBUS_USBC power switch. Therefore, if the power requirement is not met, all power supplies except VCC_3V3_SYS will remain in the off state. The board gets powered on completely only when the source can provide 5V at 3A.

GUID-20230111-SS0I-3RPK-1CW8-BR2BG8MNSPX9-low.png

Figure 2-4 Type-C CC Configuration
Table 2-1 Current Sourcing Capability and State of USB Type-C Cable
OUT1 OUT2 Advertisement
H H Default current in unattached state
H L Default current in attached state
L H Medium current (1.5A) in attached state
L L High current (3.0A) in attached state

The AM263x controlCARD Docking Station includes a power solution based on discrete regulators for each of the power rails. During the initial stage of the power supply, 5V supplied by the Type-C USB connector is used to generate all of the necessary voltages required by the controlCARD Docking Station.

Discrete DC-DC buck regulators are used to generate the supplies required for the AM263x system on a chip (SoC) and other peripherals on the Docking Station and connected controlCARD.

One DC-DC buck regulator (TPS62172DSGT) is used to generate the 3.3 V supply from the main 5V supply.

Note: The USB Type-C 5V input supplies both the AM263x controlCARD Docking Station and the docked AM263x/AM263Px controlCARD EVM. A separate supply for the controlCARD EVM is not needed.