R-Car/Boards/Porter:PEXT01

Introduction
This is the official Wiki for Porter Infotainment Expansion Board.

Please refer to R-Car/Boards/Porter for Renesas R-Car M2 Porter board Rev C.

Hardware
This section contains information about Porter Expansion Board hardware.

Hardware Features

 * Ethernet AVB phy
 * KSZ9031 phy
 * MOST interface
 * Support both 3-pin and 6-pin MLB interface
 * Pinout compatible with Microchip evaluation boards
 * LVDS camera interface
 * MAX9272 deserializer
 * 8-bit wide video bus connected to VI2 interface of R-Car M2 CPU
 * 5V or 12V selectable supply voltage for camera with current limiting
 * High quality 24-bit audio codec PCM3168A
 * 6 input channels (3 stereo jacks for microphone connection)
 * 6 line out channels (RCA connectors)
 * 6 HP outputs (3 stereo jack connectors for direct headphones connection)
 * 44100/48000 Hz sampling frequency
 * Si4689 base AM/FM/DAB radio
 * Digital audio interface to R-Car M2 CPU
 * Additional flash storage for fast radio boot
 * Supply for active DAB antennas with current limit (5 or 12 V)
 * LIN interface (TJA1027 driver)
 * On-board +12V generator
 * GPS/GLONASS receiver
 * 9-axis sensor: 3D digital linear acceleration sensor, and a 3D digital angular rate sensor, a 3D digital magnetic sensor
 * WiFi/BT module WL1837

EthernetAVB
This sections provides information about Ethernet for Audio Video Bridging (AVB) for R-Car M2 Porter board.

R-Car M2 SoC provides Ethernet AVB functionality with 1000Mbps speed. This IP block shares pins with Ethernet MAC so only one of these interfaces can be used. R-Car M2 Porter board provides Ethernet MAC with KSZ8041RNLI PHY and Ethernet AVB connector (CN3). You can find this connector on the Porter hardware page. Thus it is necessary to disconnect KSZ8041RNLI PHY before using Ethernet AVB. To achieve this you should remove resistor R321. Resistors R1005 and R1006 allow to connect PHY reset pin to different SoC pins. Please, check that resistor R1005 is installed and R1006 is not. This resistor connects KSZ8041RNLI PHY reset pin with R-Car M2 SoC. Without this resistor MAC PHY remains in the reset mode and does not use shared pins. Next step you should set JP7 in open state. Pext01 board generates own 125MHz refclock.

Schematics
Porter Expansion Board schematics can be found in

Installing Porter Expansion Board
Use the following procedure to install Porter Expansion Board to the Porter Board. 1. Find EXIO and Ethernet AVB connectors on both Porter and Porter Expansion boards. 2. Align and carefully push them to each other until Ethernet AVB and EXIO connectors are fully inserted. 3. Take SD cable. One side of this cable should be connected to the SDIO port (CN9), while another to SD adapter. 4. Plug SD Adapter to the Porter Board's SD Card slot. 5. Now, when boards are reliably mounted and connected with SD adapter, use 12V power supply splitter cables to connect both Porter and Porter Expansion board's power plugs to one power adapter.