SPRUJA2 November   2023

 

  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 Device Information
    4. 1.4 Specification
  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
    3. 2.3  Interface Mapping
    4. 2.4  Power ON/OFF Procedure
      1. 2.4.1 Power ON Procedure
      2. 2.4.2 Power OFF Procedure
      3. 2.4.3 Test Points
    5. 2.5  Clocking
      1. 2.5.1 Peripheral Ref Clock
    6. 2.6  Reset
    7. 2.7  CSI Interface
    8. 2.8  OLDI Interface
    9. 2.9  DSI Interface
    10. 2.10 Audio Codec Interface
    11. 2.11 HDMI Display Interface
    12. 2.12 JTAG Interface
    13. 2.13 Test Automation Header
    14. 2.14 UART Interface
    15. 2.15 USB Interface
      1. 2.15.1 USB 2.0 Type A Interface
      2. 2.15.2 USB 2.0 Type C Interface
    16. 2.16 Memory Interfaces
      1. 2.16.1 LPDDR4 Interface
      2. 2.16.2 OSPI Interface
      3. 2.16.3 MMC Interfaces
        1. 2.16.3.1 MMC0 - eMMC Interface
        2. 2.16.3.2 MMC1 - Micro SD Interface
        3. 2.16.3.3 MMC2 - M.2 Key E Interface
      4. 2.16.4 Board ID EEPROM
    17. 2.17 Ethernet Interface
      1. 2.17.1 CPSW Ethernet PHY Strapping
      2. 2.17.2 CPSW Ethernet PHY1 Default Configuration
      3. 2.17.3 CPSW Ethernet PHY2 Default Configuration
    18. 2.18 GPIO Port Expander
    19. 2.19 GPIO Mapping
    20. 2.20 Power
      1. 2.20.1 Power Requirement
      2. 2.20.2 Power Input
      3. 2.20.3 Power Supply
      4. 2.20.4 Power Sequencing
      5. 2.20.5 AM62P SoC Power
      6. 2.20.6 Current Monitoring
    21. 2.21 EVM User Setup/Configuration
      1. 2.21.1 DIP Switches
      2. 2.21.2 Boot Modes
      3. 2.21.3 User Test LEDs
    22. 2.22 Expansion Headers
      1. 2.22.1 User Expansion Connector
      2. 2.22.2 MCU Connector
      3. 2.22.3 GPMC NAND (x8) Connector
    23. 2.23 Interrupt
    24. 2.24 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
      1. 5.1.1 Issue 1 - Watchdog Reset
      2. 5.1.2 Issue 2 - Power Down Sequence
    2. 5.2 Trademarks

2.12 JTAG Interface

AM62P SK EVM includes XDS110 class on board emulation. The connection for this emulator uses a standard 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 SKEVM is removed. Voltage translation buffers are used to isolate the XDS110 circuit from the rest of the SK EVM.

Optionally, JTAG Interface on SK EVM is also provided through a 20 Pin Standard JTAG cTI Header J23. This allows the user to connect an external JTAG Emulator Cable. Voltage translation buffers are used to isolate the JTAGsignals of cTI header from rest of the SK EVM. The output of the voltage translators from XDS110 Section and cTI Header Section are muxed and connected to the AM62P 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 AM62P SoC in place of the on-board emulation circuit.

GUID-20231109-SS0I-9BMB-MVHV-TJ4540MHSMN6-low.jpg Figure 2-12 JTAG Interface

The pin-outs of the cTI 20 pin JTAG connector are given in the table below. A 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 ±15-kV Human-Body Model (HBM) as specified in IEC 61000-4-2 and provides ±8-kV contact discharge and ±12- kV air-gap discharge.

Table 2-7 JTAG Connector (J23) 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