SPRUJ66A February   2023  – December 2023

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1EVM Revisions and Assembly Variants
  5. 2Inside the Box
  6. 3EMC, EMI, and ESD Compliance
  7. 4System Description
    1. 4.1 Key Features
      1. 4.1.1 Processor
      2. 4.1.2 Power Supply
      3. 4.1.3 Memory
      4. 4.1.4 JTAG Emulator
      5. 4.1.5 Supported Interfaces and Peripherals
      6. 4.1.6 Expansion Connectors Headers to Support Application Specific Add On Boards
    2. 4.2 Functional Block Diagram
    3. 4.3 AM62A Low Power SK EVM Interface Mapping
    4. 4.4 Power ON/OFF Procedures
      1. 4.4.1 Power-On Procedure
      2. 4.4.2 Power-Off Procedure
      3. 4.4.3 Power Test Points
    5. 4.5 Peripheral and Major Component Description
      1. 4.5.1  Clocking
        1. 4.5.1.1 Peripheral Ref Clock
      2. 4.5.2  Reset
      3. 4.5.3  CSI Interface
      4. 4.5.4  Audio Codec Interface
      5. 4.5.5  HDMI Display Interface
      6. 4.5.6  JTAG Interface
      7. 4.5.7  Test Automation Header
      8. 4.5.8  UART Interface
      9. 4.5.9  USB Interface
        1. 4.5.9.1 USB 2 0 Type A Interface
        2. 4.5.9.2 USB 2 0 Type C Interface
      10. 4.5.10 Memory Interfaces
        1. 4.5.10.1 LPDDR4 Interface
        2. 4.5.10.2 OSPI Interface
        3. 4.5.10.3 MMC Interfaces
          1. 4.5.10.3.1 MMC0 - eMMC Interface
          2. 4.5.10.3.2 MMC1 - Micro SD Interface
          3. 4.5.10.3.3 MMC2 - M.2 Key E Interface
        4. 4.5.10.4 Board ID EEPROM
      11. 4.5.11 Ethernet Interface
        1. 4.5.11.1 CPSW Ethernet PHY Default Configuration
      12. 4.5.12 GPIO Port Expander
      13. 4.5.13 GPIO Mapping
      14. 4.5.14 Power
        1. 4.5.14.1 Power Requirements
        2. 4.5.14.2 Power Input
        3. 4.5.14.3 Power Supply
        4. 4.5.14.4 AM62A SoC Power
        5. 4.5.14.5 Current Monitoring
      15. 4.5.15 AM62A Low Power SK EVM User Setup and Configuration
        1. 4.5.15.1 Boot Modes
        2. 4.5.15.2 User Test LEDs
      16. 4.5.16 Expansion Headers
        1. 4.5.16.1 User Expansion Connector
        2. 4.5.16.2 MCU Connector
      17. 4.5.17 I2C Address Mapping
  8. 5Revision History

4.5.14.1 Power Requirements

AM62A Low Power SK EVM can be powered through either of the two USB Type C Connectors –

  • Connector1(J13) - Power role – SINK, No Data role
  • Connector2(J15) - Power role – DRP, Data role – USB 2.0 DFP or UFP

The AM62A SK EVM supports voltage input ranges of 5V - 15V and 3A of current. A USB PD controller Mfr. Part# TPS65988DHRSHR is used for PD negotiation upon cable detection to get necessary power required for the board. Connector 1 is configured to be an UFP Port and has no Data role. Connector 2 is configured as a DRP port, it can act as DFP only when the board is being powered by Connector 1. When both the connectors are connected to external power supply, the port with highest PD power contract will be selected to power the board.

Table 4-8 Type-C Power Roles
J13 (UFP) J15 (DRP) BoardPower Remarks
Plugged in NC ON - J13 J13 will be UFP and will only sink power & J15 can act as DFP if a peripheral is connected
NC Plugged in ON - J15 J15 will be UFP and can only sink power
Plugged in Plugged in ON- J13 or J15 Board will be powered by the port with highest PD power contract

The PD IC uses a SPI EEPROM to load the necessary configuration on power up so it can negotiate a power contract with a compatible power source.

The configuration file is loaded to the EEPROM using header J11. Once the EEPROM is programmed the PD obtains the configuration files via SPI communication. Upon loading the configuration files the PD negotiates with the source to obtain the necessary power requirement.

Note: The EEPROM is pre-programmed with the configuration file for the operation of the PD controller.

Power indication LEDs are provided for both the Type-C connectors for the user to identify which connector is powering the SKEVM Board. Anexternal power supply (Type-C output) can be used to power the EVM but is not included as part of the SKEVM kit.

The external power supply requirements (Type-C) are:

Minimum Voltage: 5 VDC, Recommended Minimum Current: 3000 mA

Maximum Voltage: 15VDC, Maximum current: 5000mA

Table 4-9 Recommended Power Supplies
Manufacturer Manufacturer Part #
GlobTek, Inc. TR9CZ3000USBCG2R6BF2
Qualtek QADC-65-20-08CB
Note: Because SK-AM62A implements USB PD for power, the device is able to negotiate to the highest Voltage/Current combination supported by both the Device and Power Adapter, as such, if the power supply exceeds the maximum voltage and current requirements listed above is acceptable as long as the power adapter is compliant with the USB-C PD specification.
Note: TI recommends using an external power supply or power accessory which complies with applicable regional safety standards such as (by example) UL, CSA, VDE, CCC, PSE, etc.