SPRUII1A November   2017  – January 2020

 

  1.   Fusion Application Board
    1.     Trademarks
    2. 1 Introduction
    3. 2 Overview
      1. 2.1 Fusion Application Board
      2. 2.2 Fusion Board Features
    4. 3 Hardware
      1. 3.1  Hardware Architecture
        1. 3.1.1 Fusion Application Board With Component Identification
      2. 3.2  TDAx EVM Compatibility
      3. 3.3  Fusion Power
      4. 3.4  DS90UB960 Modes
        1. 3.4.1 Power over Coax (PoC)
      5. 3.5  I2C Addressing
        1. 3.5.1 Multiple Device Addressing (Aliasing)
        2. 3.5.2 I2C Bus Switches and Connections
      6. 3.6  EVM Interface
      7. 3.7  Sensor Connection
      8. 3.8  MSP430™ Microcontroller
      9. 3.9  Configuration Options
        1. 3.9.1 Dipswitch (S3)
        2. 3.9.2 Bank 1 Power (J27)
        3. 3.9.3 Bank 2 Power (J22)
      10. 3.10 Status LEDs
      11. 3.11 External Interfaces
    5. 4 Image Sensor Module (Optional)
      1. 4.1 OV2775 Image Sensor
      2. 4.2 DS90UB953-Q1 Serializer
    6. 5 Getting Started
      1. 5.1 Powering Up the Fusion Application Board
  2.   Revision History

3.6 EVM Interface

The EVM can be used as a host for I2C on the Fusion board. There is a separate power connector (J40) that is used to power the Fusion board from the EVM. The I2C bus that is used on the EVM is I2C3 for SCL and SDA. The GPIO that controls whether the EVM will be the host is GPIO7_7 and is output only from the EVM. That GPIO can override the switch settings on the Fusion board. For correct switch settings to be deployed, see Table 7. If powered from the EVM, the total solution must not exceed 60 W. If so, TI recommends using the external supply connector for the Fusion board.

Table 5. Pin Associations on Fusion Board and TDA2Px EVM

CSI-2 Pin Fusion Board TDA2Px EVM Function
2 I2C_SCL_SOC I2C3_SCL I2C pin that must be initialized on the TDA2P EVM
4 I2C_SDA_SOC I2C3_SDA I2C pin that must be initialized on the TDA2P EVM
18 SYNC_Bank2 GPIO7_9 Output from the DS90UB960 device to CSI2, determines if Bank2 sensors are to be synchronized
20 I2C_SW_SOC GPIO7_7 Output that determines the TDA2P EVM is the host. Must be driven high.
22 SYNC_Bank1 GPIO7_10 Output from the DS90UB960 device to CSI2, determines if Bank1 sensors are to be synchronized

There is a SYNC input from the DS90UB960 device that is routed to the CSI-2 connector for both sensor banks on the Fusion board. The TDA2Px EVM can synchronize the sensors to be able to minimize the latency of the video streams coming in. For signal details on interfacing with other TI EVMs and processors, see the device-specific EVM User's Guide.