SPRUJ69 December   2022 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Inside the Box
    2. 1.2 Key Features
    3. 1.3 Thermal Compliance
    4. 1.4 Reach Compliance
    5. 1.5 EMC, EMI, and ESD Compliance
  3. 2User Interfaces
    1. 2.1 Power Inputs
    2. 2.2 Power Input [J7_CP] with LED for Status [LD2_CP][LD3_CP]
      1. 2.2.1 Power Control [SW2_CP] with LED for Status [LD5_CP] [LD6_CP] [LD7_CP]
      2. 2.2.2 Power Budget Considerations
    3. 2.3 User Inputs
      1. 2.3.1 Board Configuration Settings [SW3_CP] [SW13_CP] [SW3_SOM]
      2. 2.3.2 Boot Configuration Settings [SW9_CP] [SW8_CP]
      3. 2.3.3 Reset Pushbuttons [SW7_CP] [SW6_CP] [SW5_CP] [SW4_CP]
      4. 2.3.4 User Pushbuttons [SW2] [SW11] [SW10] [SW1] [SW12] with User LED Indication [LD9] [LD8]
    4. 2.4 Standard Interfaces
      1. 2.4.1 Uart-Over-USB [J43_CP] [J44_CP] with LED for Status [LD10_CP] [LD11_CP]
      2. 2.4.2 Gigabit Ethernet [J35_CP] with Integrated LEDs for Status
      3. 2.4.3 USB3.1 Gen1 Interface [J5_CP]
      4. 2.4.4 USB2.0 Interface [J6_CP]
      5. 2.4.5 PCIe Card Slot [J8_CP]
      6. 2.4.6 Display Port Interfaces [J36_CP] [J37_CP]
      7. 2.4.7 MicroSD Card Cage [J49_CP]
      8. 2.4.8 Stereo Audio Interface [LINE-IN J38_CP, LINE-OUT J41B_CP, J40B_CP]
    5. 2.5 Expansion Interfaces
      1. 2.5.1 Heatsink [ACC3_SOM] with Fan Header [J15_CP]
      2. 2.5.2 CAN-FD Connectors
      3. 2.5.3 Camera Interfaces [J52_CP]
      4. 2.5.4 Automation and Control Connector [J50_CP]
      5. 2.5.5 ADC [J23_CP]
      6. 2.5.6 CSI-TX [J10_SOM]
      7. 2.5.7 Accessory Power Connector [J42_CP]
  4. 3Circuit Details
    1. 3.1 Top Level Diagram
    2. 3.2 Interface Mapping
    3. 3.3 I2C Address Mapping
    4. 3.4 GPIO Mapping
      1. 3.4.1 Power Monitoring
      2. 3.4.2 Shared Interfaces / Signal Muxing
      3. 3.4.3 Power Delivery Network (PDN)
      4. 3.4.4 Identification EEPROM
  5. 4Revision History

2.4.1 Uart-Over-USB [J43_CP] [J44_CP] with LED for Status [LD10_CP] [LD11_CP]

Five UART ports of the processor are interfaced with the UART-over-USB transceiver(s). When the EVM’sUSB micro-B connectors [J43] and/or [J44] are connected to a Host-PC using supplied USB cable (Type-A to Micro-B), the computer can establish Virtual Com Port(s) to be used with any terminal application. Virtual Com Port drivers for the transceiver(s) can be obtained from:

https://www.ftdichip.com/Products/ICs/FT2232H.html

https://www.ftdichip.com/Products/ICs/FT4232H.html

Once installed, the Host-PC will create the Virtual Com Ports (two ports for FT2232, 4 ports for FT4232). Depending on the other Host-PC resources available, the Com Ports may not be located at COM1-2 and/or COM1-4. However, they will remain in the same numerical order for each transceiver.

The circuit(s) are powered from USB bus power and therefore the COM connection will not be lost when the EVM power is removed. LED(s) [LD11] [LD10] are used to indicate an active COM connection with Host-PC.

Table 2-10 UART to COM Port Mapping [J43] with Status [LD10]
UART Port Host-PC COM Port
MCU_UART0 COM 1
WKUP_UART0 COM 2
Table 2-11 UART to COM Port Mapping [J44] with Status [LD11]
UART Port Host-PC COM Port
MAIN_UART8 COM 1
MAIN_UART5 COM 2
MAIN_UART2 COM 3
NA COM 4

The EEPROM of FTDI bridges are programmed with the CPB serial number, users to identify the connected COM port with board serial number when one or more boards connected to the computer.

Note: The maximum length for the IO cables should not exceed three meters.
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