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

4.4 Audio Codec Interface

The infotainment expansion board has two TI ‘s Automotive Audio Codec IC Mfr. Part# PCM3168A-Q1, each supports three stereo Inputs and four stereo outputs. External Audio input and output signals are terminated to 3.5 mm stacked audio jack (stereo mode) Mfr. Part# STX-4235-3/3-N with appropriate filters circuitry.

TI’s Audio OPAMP Mfr. Part# OPA2322AI used to convert the single ended to differential as well as to convert the differential to single ended signals. The MODE pin is held LOW to select I2C as control interface and Codec is configured over I2C interface. Default I2C address is set to 0x46 &0x47 for Codec –B and Codec-A, respectively. The device reset is controlled by the I2C GPIO expander.

Microphone Input ports can be configured for active and passive microphones and also can be configured for Line Input. This Input port configuration can be set by the resistor option as shown in Table 5.

Table 5. MIC I/P Port Config for CODEC-A & CODEC-B

Install Remove
PASSIVE-MIC
(default)		 BIAS + PREAMP R2, R3, R5, R6 R1, R4
ACTIVE-MIC BIAS ONLY R1, R2, R4, R5 R3, R6
LINE-INPUT NO BIAS/PREAMP R1, R4 R2, R3, R5, R6