SPRUJG2 December   2024 AM62D-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 EVM Revisions and Assembly Variants
  7. 2Hardware
    1. 2.1  Additional Images
    2. 2.2  Key Features
      1. 2.2.1 Processor
      2. 2.2.2 Power Supply
      3. 2.2.3 Memory
      4. 2.2.4 JTAG/Emulator
      5. 2.2.5 Supported Interfaces and Peripherals
      6. 2.2.6 Expansion Connectors/Headers to Support Application Specific Add‐On Boards
    3. 2.3  Power Requirement
    4. 2.4  Setup and Configuration
      1. 2.4.1 EVM DIP Switches
      2. 2.4.2 Boot modes
      3. 2.4.3 User Test LEDs
    5. 2.5  Power ON/OFF Procedures
      1. 2.5.1 Power ON Procedure
      2. 2.5.2 Power OFF Procedure
      3. 2.5.3 Power Test Points
    6. 2.6  Interfaces
      1. 2.6.1  AM62D Audio EVM Interface Mapping
      2. 2.6.2  Audio Interface
        1. 2.6.2.1 Audio Stereo Lineouts
        2. 2.6.2.2 Audio Microphone / Line In
      3. 2.6.3  JTAG Interface
      4. 2.6.4  UART Interface
      5. 2.6.5  USB Interface
        1. 2.6.5.1 USB2.0 Type-A Interface
        2. 2.6.5.2 USB2.0 Type-C Interface
      6. 2.6.6  MCAN Interface
      7. 2.6.7  Memory Interfaces
        1. 2.6.7.1 LPDDR4 Interface
        2. 2.6.7.2 Octal Serial Peripheral Interface (OSPI)
        3. 2.6.7.3 MMC Interfaces
          1. 2.6.7.3.1 MMC0 - eMMC Interface
          2. 2.6.7.3.2 MMC1 - MicroSD Interface
        4. 2.6.7.4 Board ID EEPROM
      8. 2.6.8  Ethernet Interface
      9. 2.6.9  CPSW Ethernet 1 and CPSW Ethernet 2
      10. 2.6.10 GPIO Port Expander
      11. 2.6.11 GPIO Mapping
    7. 2.7  Power
      1. 2.7.1 Power Input
      2. 2.7.2 Power Supply
      3. 2.7.3 Power Sequencing
      4. 2.7.4 AM62D SOC Power
      5. 2.7.5 Current Monitoring
    8. 2.8  Clocking
      1. 2.8.1 Peripheral Ref Clock
    9. 2.9  Reset
    10. 2.10 CPLD Mapping
    11. 2.11 Audio Expansion Connectors (Headers)
      1. 2.11.1 Audio Expansion Connector 1
      2. 2.11.2 Audio Expansion Connector 2
    12. 2.12 Interrupt
    13. 2.13 I2C Address Mapping
  8. 3Hardware Design Files
  9. 4Compliance Information
    1. 4.1 Compliance and Certifications
  10. 5Additional Information
    1. 5.1 Known Hardware or Software Issues
    2. 5.2 Trademarks

2.6.3 JTAG Interface

The AM62D Audio EVM board includes XDS110 class on-board emulation. The connection for this emulator uses an USB 2.0 micro-B connector and the circuit acts as a Bus powered USB device. The VBUS power from the connector is used to power the emulation circuit such that connection to the emulator is not lost when the power to the EVM is removed. Voltage translation buffers are used to isolate the XDS110 circuit from the rest of the EVM.

Optionally, the JTAG Interface on the AM62D Audio EVM is also provided through a 20-pin Standard JTAG cTI Header J19. This allows the user to connect an external JTAG Emulator Cable. Voltage translation buffers are used to isolate the JTAG signals of cTI header from the rest of the EVM. The output of the voltage translators from XDS110 Section and cTI Header Section are muxed and connected to the AM62D JTAG Interface. If a connection to the cTI 20-pin JTAG connector is sensed using an auto presence detect circuit, the mux routes the 20-pin signals from the cTI connector to the AM62D SoC in place of the on-board emulation circuit.

AUDIO-AM62D-EVM JTAG Interface Block Diagram Figure 2-7 JTAG Interface Block Diagram

The pin-outs of the cTI 20-pin JTAG connector are given in Table 2-11. An ESD protection part number TPD4E004 is provided on USB signals to steer ESD current pulses to VCC or GND. TPD4E004 protects against ESD pulses up to ±15kV Human-Body Model (HBM) as specified in IEC 61000-4-2 and provides ±8kV contact discharge and ±12kV air-gap discharge.

Table 2-11 JTAG Connector (J14) Pinout
Pin No. Signal
1 JTAG_TMS
2 JTAG_TRST#
3 JTAG_TDI
4 JTAG_TDIS
5 VCC_3V3_SYS
6 NC
7 JTAG_TDO
8 SEL_XDS110_INV
9 JTAG_cTI_RTCK
10 DGND
11 JTAG_cTI_TCK
12 DGND
13 JTAG_EMU0
14 JTAG_EMU1
15 JTAG_EMU_RSTn
16 DGND
17 NC
18 NC
19 NC
20 DGND