SPRUIM6A October   2018  – November 2020

 

  1. 1Introduction
    1. 1.1 Key Features
  2. 2AM65x IDK Overview
  3. 3Common Processor Board
    1. 3.1 Key Features
    2. 3.2 Functional Block Diagram
    3. 3.3 Overview of Common Processor Board
      1. 3.3.1  Clocking
        1. 3.3.1.1 RTC Clock
        2. 3.3.1.2 Maxwell SoC Clock
        3. 3.3.1.3 Ethernet PHY Clocks
        4. 3.3.1.4 SERDES Clock
      2. 3.3.2  Reset
      3. 3.3.3  Power Requirements
        1. 3.3.3.1 Power Input
        2. 3.3.3.2 Overvoltage and Undervoltage Protection Circuit
        3. 3.3.3.3 Voltage Supervisor
        4. 3.3.3.4 Current Monitoring
        5. 3.3.3.5 Power Supply
        6. 3.3.3.6 Power Sequencing
        7. 3.3.3.7 SoC Power
      4. 3.3.4  Configuration
        1. 3.3.4.1 Boot Modes
        2. 3.3.4.2 JTAG
          1. 3.3.4.2.1 Test Automation
        3. 3.3.4.3 UART Interface
      5. 3.3.5  Memory Interfaces
        1. 3.3.5.1 DDR4 Interface
        2. 3.3.5.2 MMC Interface
          1. 3.3.5.2.1 SDHC Interface
          2. 3.3.5.2.2 eMMC Interface
        3. 3.3.5.3 OSPI Interface
        4. 3.3.5.4 SPI NOR Flash Interface
        5. 3.3.5.5 Board ID EEPROM Interface
        6. 3.3.5.6 Boot EEPROM Interface
      6. 3.3.6  Ethernet Interface
        1. 3.3.6.1 Gigabit Ethernet PHY Default Configuration
        2. 3.3.6.2 Ethernet LEDs
      7. 3.3.7  LCD Display Interface
      8. 3.3.8  USB 2.0 Interface
      9. 3.3.9  CSI-2 Interface
      10. 3.3.10 Application Card Interface
      11. 3.3.11 SERDES Interface
      12. 3.3.12 GPMC/DSS Interface
      13. 3.3.13 I2C Interface
      14. 3.3.14 SPI Interface
      15. 3.3.15 Timer and Interrupt
        1. 3.3.15.1 Timer
        2. 3.3.15.2 Interrupt
      16. 3.3.16 Fan Connector
  4. 4IDK Application Card
    1. 4.1 Key Features
    2. 4.2 Overview of IDK Application Board
      1. 4.2.1 Application Card Connector
      2. 4.2.2 Profibus Interface
      3. 4.2.3 CAN Interface
      4. 4.2.4 Rotary Switch
      5. 4.2.5 Industrial I/O Terminal Connector
      6. 4.2.6 Ethernet Interface
      7. 4.2.7 Board ID Memory
      8. 4.2.8 Power Supply
  5. 5x2 Lane PCIe Personality Card
    1. 5.1 Key Features
    2. 5.2 Overview of PCIex2 Daughter Card
      1. 5.2.1 Personality Card Connectors
      2. 5.2.2 USB 2.0 Interface
      3. 5.2.3 PCIe Interface
      4. 5.2.4 x2 Lane PCIe Personality Card Clocking
      5. 5.2.5 Board ID EEPROM Interface
      6. 5.2.6 x2 Lane PCIe Personality Card Power
  6. 6Known Issues
    1. 6.1 Determining the Revision and Date Code for the EVM
    2. 6.2 Known Issues for the A, E4, and E3 Revision
      1. 6.2.1 Lack of Reset for I2C IO Expander
    3. 6.3 Known Issues for the E4 & E3 Revision
      1. 6.3.1 Changes Unique to the E4 Revision Modified for 2.0 Revision
    4. 6.4 Known Issues for the E3 Revision
      1. 6.4.1 Resonance Observed on the SoC Side of Some Filters Associated with VDDA_1V8
      2. 6.4.2 Additional LDO Power Supply Needed for VDDA_1P8_SERDES0
      3. 6.4.3 Length of the RESET Signal to the PCIE Connectors on the SERDES Daughter Card
      4. 6.4.4 The PORz_OUT and MCU_PORz_OUT Signals Go High During Power Sequencing
      5. 6.4.5 Orientation of the Current Monitoring Shunt Resistors
      6. 6.4.6 SD Card IO Supply Capacitance
      7. 6.4.7 PHY Resistor Strapping Changed to Disable EEE Mode
      8. 6.4.8 The I2C Address for the I2C Boot Memory changed to 0x52
  7. 7Configuring the PRG0 and PRG1 Ethernet Interface to MII
    1. 7.1 Ethernet PHY Initial Conditions and TX Clock Signal Change
      1. 7.1.1 Ethernet PHY0 Clock and Initial Condition for MII
      2. 7.1.2 Ethernet PHY1 Clock and Initial Condition for MII
      3. 7.1.3 Ethernet PHY2 Clock and Initial Condition for MII
      4. 7.1.4 Ethernet PHY3 Clock and Initial Condition for MII
    2. 7.2 Ethernet PHY and TX Data Signals Change
      1. 7.2.1 Ethernet PHY0 TX Data Signals for MII
      2. 7.2.2 Ethernet PHY1 TX Data Signals for MII
      3. 7.2.3 Ethernet PHY2 TX Data Signals for MII
      4. 7.2.4 Ethernet PHY3 TX Data Signals for MII
  8. 8Revision History
Test Automation

A test automation header J41 is provided to allow an external controller to control the power on/off boot modes, reset functionality, and current measurement to support automated testing. The test automation header includes four GPIOs and two I2C interfaces. The basic controls are listed in Table 3-18.

Table 3-18 List of Signals Routed to Test Automation Header
SignalSignal TypeFunction
POWER_DOWNGPIOInstructs the EVM to power down all circuits
PORGPIOCreates a PORz into the Maxwell
WARM_RESETGPIOCreates a RESETz into the Maxwell
GPIO1GPIOGPIO for communications with Maxwell
GPIO2GPIOGPIO for communications with Maxwell
GPIO3GPIOUsed to Enable the BOOTMODE Buffer
GPIO4GPIOUsed to Reset the Boot mode IO Expander
I2CI2CCommunicates with boot mode I2C buffer
I2C2I2CCommunicates with INA226 current measurement devices

One of the I2C interfaces from the test automation header is connected to an I2C I/O expander, which can drive the boot mode pins of the processor. The bootmode selection switches should be in the OFF condition. GPIO3 should be set to logic low to enable this mode.

The other I2C interface is connected to the current measurement and temperature sensing devices present on the I2C2 port of the SoC.

The test automation connector is used by Texas Instruments to control the software regression testing and comparative power measurements. The connector is provided to allow customers to develop their own testing and power measurements of customer applications. Power measurements are not a substitute for the AM65x Power Estimation Tool and should not be used for the design of power supply solutions. Power measurements vary based on silicon process and environment, and measurements should only be used for comparison with other measurements taken on the same EVM.

Table 3-19 Test Automation Header (J41) Pin-out
Pin no.SignalI/O Direction (to CP Board)
1VCC3V3_1Power (out)
2VCC3V3_1Power (out)
3VCC3V3_1Power (out)
4NCNA
5NCNA
6NCNA
7DGNDGround
8NCNA
9NCNA
10NCNA
11NCNA
12NCNA
13NCNA
14NCNA
15NCNA
16DGNDGround
17NCNA
18NCNA
19NCNA
20NCNA
21NCNA
22NCNA
23NCNA
24NCNA
25DGNDGround
26TEST_POWERDOWNInput
27TEST_PORZnInput
28TEST_WARMRESETn
Input
29NCNA
30TEST_GPIO1Bidirectional
31TEST_GPIO2Bidirectional
32TEST_GPIO3Input
33TEST_GPIO4Input
34DGNDGround
35NCNA
36SOC_I2C2_SCLBidirectional
37BOOTMODE_I2C_SCLBidirectional
38SOC_I2C2_SDABidirectional
39BOOTMODE_I2C_SDABidirectional
40DGNDGround
41DGNDGround
42DGNDGround