Get Started with the S32V234-EVB2

1.1 Get to Know Your Evaluation System

1.2 Powering You System

Your S32V234-EVB2 uses a 12 V barrel jack power supply or wire-ended jack.

Caution: Do not use the two different jacks at the same time. Doing so will likely damage the board.

The 12 V hot goes to Pin 1 of the barrel jack or wire-end plug. See rear of board for pin marking.

The dual position SW (SW9) controls power flow and the red TP93 is available for measuring 12 V prior to main power SW (SW9).

1.3 Reset Options

Your S32V234-EVB2 evaluation system provides a POR RESET and SOFT RESET buttons:

• Pressing POR RESET pulls active low EXT_POR signal on S32V234 chip to GND
• Pressing SOFT RESET pulls active low RESET signal on S32V234 chip to GND

Note: Refer to the S32V234 Reference Manual  for specifics on levels of reset and device reset flow.

1.4 Serial Communications Within the Evaluation System

Your S32V234-EVB2 has an FTDI chip to convert UART signals to USB friendly format for connecting to the host PC.

The UART 0 is a default serial output for Linux Board Support Package for S32V boot images.

Default comms rate is 115200 baud with 8 data bits, 1 stop bit, no parity.

For Windows, you can use Tera Term  or PuTTY  to communicate with the board.

Note: Lack of serial output on boot can indicate corrupt (or missing) boot medium, or improper baud rate. An activity LED is present near each USB port to indicate serial communication.

1.5 Boot Configurations

Your S32V234-EVB2 evaluation system has three boot modes:

• Serial download: Allows an external tool to use CAN or UART to download code into RAM and start execution. Code must be redownloaded on every reset in this mode. Uses a baud rate of 48 kbps.
• Boot from fuses: Configures device to boot according to the internal eFuse values programmed at factory. This is generally not used for evaluation boards due to lack of custom fuse programming.
• Boot from RCONs: The most common configuration, allows customization of the boot configuration via four 8-bit DIP switches on EVB2 (circled in picture).

The modes are selected by BOOT_MODE0/1 signals controlled by the J40 (Boot_Mode[0]) and J42 (Boot_Mode[1]), jumpers and are read at reset. By default, the S32V234-EVB2 is configured to use the boot from RCONs mode.

Note: Check the "System Boot" chapter in the S32V234 Reference Manual  for details.

By default, the board boots from the RCON switches, which allows you to choose the boot core and SD card modes for advanced use cases.

The S32V234-EVB2 can be configured to boot from the SD card, EMMC or QSPI by using jumpers J48 and J49. Booting from the SD card is the factory default setting:

• Boot from SD: J48 = 1&2, J49 = 1&2 and SW8 = 0x80
• Boot from EMMC: J48 = 1&2, J49 = 2&3 and SW8 = 0xC0
• Boot from QSPI: J48 = 2&3 and SW8 = 0x01

Note: All switch configurations are supported by Linux BSP. For validated modes, refer to the Linux BSP User Manual.

1.6 Display

Your S32V234-EVB2 evaluation system has two display options: TFT or HDMI.

• HDMI: Jumper J36 set to 1&2
• LVDS: Jumper J36 set to 2&3

Warning: Turn off the power to the board before changing jumpers or switches.

1.7 Camera Inputs

Your S32V234-EVB2 evaluation system offers two MIPI camera inputs and two VIU (parallel) inputs. NXP and its distributors sell MIPI cameras designed for use with this board.

You can also add 5 V/12 V external power. See the schematics for pinout.
Warning: Turn off the power to the board before changing jumpers or switches.

• Configuring Optional Voltage:
  • For 5 V on cameras 0/1, set jumpers J7 and J5 to 2&3 respectively.
  • For 12 V, set jumpers J7 and J5 to 1&2 respectively.
• Enabling/Disabling Optional Voltage:
  • To enable for cameras 0/1, set jumpers J6 and J4 to 1&2 respectively.
  • To disable, set J6 and J4 to 2&3 respectively.

  Note: If you are unsure if your camera requires optional voltage, keep it disabled and refer to schematics/data sheet for your camera and S32V234-EVB2.

1.8 Camera Configurations

By default, jumpers J6 and J4 should be set to 2&3 to keep optional voltage disabled.

This configuration is suitable for most MIPI cameras that do not require additional voltage supply. It is also the safest configuration when using a new camera.

Two NXP-endorsed MIPI cameras use this configuration: the OV10640 module and the Sony IMX224 camera.

Another NXP-endorsed camera module is the OV10635/10640 with MAXIM 9271 Serializer, paired with the MAXIM 9286 Deserializer. This camera set requires the optional 12 V to be enabled.

1. To prepare to use the MAX9271/86 Ser/Des setup, first ensure power is off and unplugged from the board.
2. Then, choose between MIPI 0 or 1 and configure only J7 or J5 respectively to 1&2 to select 12 V.
3. set jumpers J6 or J4 to 1&2 to enable optional voltage.
4. Confirm that the MAX9286 deserializer board is configured to use board power by setting its jumper JU4 to the position shown (For Rev A deserializer boards).

Once all of these are set and cameras are connected, power can be turned on. Be sure to power off before removing cameras or components.

Note: For other revisions, refer to deserializer schematic to find required configuration.

Check our S32V MIPI cameras and de-serializer.

1.9 RCON

Note: See schematics for RCON to BOOTCFG switch mapping.

Warning: The Linux BSP has only been validated on certain configurations. Check the User Manual for more information on validated settings.