SPRUIT0A December   2019  – May 2020

 

  1.   Jacinto7 EVM Infotainment Expansion
    1.     Trademarks
    2. 1 Introduction
      1. 1.1 Key Features
    3. 2 Infotainment Expansion Board Overview
      1. 2.1 Infotainment Expansion Board Identification
      2. 2.2 Infotainment Expansion Board Component Identification
    4. 3 Infotainment Expansion Board - User Setup/Configuration
      1. 3.1 Interfacing Infotainment Expansion Board With CP Board
        1. 3.1.1 Board Assembly Procedures
      2. 3.2 Power Requirements
      3. 3.3 EVM Reset/Interrupt Push Buttons
      4. 3.4 EVM Configuration DIP Switch
    5. 4 Infotainment Expansion Board Hardware Architecture
      1. 4.1  Infotainment Expansion Board Hardware Top Level Diagram
      2. 4.2  Expansion Connectors
      3. 4.3  Board ID EEPROM
      4. 4.4  Audio Codec Interface
        1. 4.4.1 Port Mapping
      5. 4.5  FPD link De-Serializer Interface (Audio)
      6. 4.6  DIR Interface
      7. 4.7  DIT Interface
      8. 4.8  Legacy Audio/JAMR3 Connectors
      9. 4.9  VIN/VOUT Mux Selection
      10. 4.10 HDMI Interface Bridge
      11. 4.11 FPD Link Display Serializer Interface
      12. 4.12 Parallel Camera Interface
        1. 4.12.1 Camera Clock
        2. 4.12.2 LI Camera Module Connector
        3. 4.12.3 OV Camera Module Connector
  2.   A Jacinto7 EVM Interface/IO Mapping
    1.     A.1 Interface Mapping
    2.     A.2 Infotainment Board GPIO Mapping
    3.     A.3 I2C Address Mapping
  3.   Revision History

DIR Interface

Infotainment expansion board is having a TI‘s Digital Audio Interface Receiver (DIR) IC Mfr. Part# DIR9001-Q1 to process the external digital audio input signal. The DOUT, SCKO, BCKO & LRCKO Outputs of DIR IC is connected to CP Board McASP signals Using a MUX/DMUX IC U14 Mfr. Part# SN74AVC8T245PWR and U17 IC Mfr. Part# SN74CB3Q3257PWR on INFO Board.

spruit0-dir-1-2-de-mux.gifFigure 13. DIR 1:2 DeMux

RCA Jack Mfr. Part# RCJ-041 (Black) used to receive the external audio with buffer/filter circuitry. The input can be selected between DIR coaxial cable and a SPDIF optical input by using a switch (SW1).

spruit0-dir-switch-interface-selection-switch.gifFigure 14. DIR Interface Selection Switch

Table 6. DIR Interface Selection Switch

SW1 Input Type
1-2 Co-Axial RCA
2-3 Fiber Optic Receiver