Quick Start Guide Part Number Here SJA1124EVB Evaluation Board for SJA1124 SPI to Quad-LIN Bridge ArduinoTM UNO footprint-compatible LIN Communication Shield
Quick Start Guide GET TO KNOW THE SJA1124 EVALUATION BOARD J2 Header J1 Header INHN Indicator LEDs VIO Supply Indicator LED 16 x LIN Master 4 x SJA1124 External Power Supply (5-16V) Power Supply Indicator LED J3 Header J4 Header Figure 1: Front side of SJA1124EVB 1
www.nxp.com SPI Power CLK SPI Chip Selects Synchronous LIN frame transmission Status Interrupt SPI Chip Selects Figure 2: SJA1124EVB footprint SJA1124EVB ArduinoTM UNO footpint-compatible shield The SJA1124 EVB has the standard-based form factor compatible with ArduinoTM UNO pin layout, that enables rapid prototyping with a wide range of microcontroller development boards.
Quick Start Guide FEATURES • • • • • • • • • 4 x SJA1124A SPI to LIN bridge Supports 16 x LIN master channel connectors ArduinoTM UNO footprintcompatible shield Easy access to I/O header pins Power LED indicator VIO LED indicator INHN LED indicators Small form factor MICROCONTROLLER BOARD COMPATIBILITY • • • • • 3 S32K14xEVB DEVKIT-MPC574x DEVKIT-S12x FRDM-KEAx etc.
www.nxp.com STEP-BY-STEP INSTRUCTIONS (cont.) 2 Digital Interface Voltage Setting For adaptation to the digital interface levels of the connected microcontroller provides the SJA1124 a VIO reference voltage pin. Default SJA1124EVB setting for VIO pin mapping is J3-3 (VDD). As alternative J3-4 (P3V3) or J3-4 (P5V0) can be used by populating a zero-ohm resistor to the appropriate placeholder. See Figure 4. Note: Only one placeholder of R33, R34 and R35 shall be populated with a zero-ohm resistor.
Quick Start Guide J1 HEADER – DEFAULT SETTING Resistor Default Setting J1-1 - - - Not connected J1-2 - - - Not connected J1-3 R19 0 INTN_SJA Shared SJA1124 interrupt output J1-4 R18 0 STAT_SJA Shared SJA1124 SPI status output J1-5 R28 open CLK3_SJA Alternative SJA1124 clock reference J1 Header 5 Signal Description J1-6 - - J1-7 R25 0 SCSN_SJA0 Not connected SJA1124 SPI chip select input #0 J1-8 R55 0 SCSN_SJA1 SJA1124 SPI chip select input #1
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Quick Start Guide J3 HEADER – DEFAULT SETTING J3 Header 7 Resistor Default Setting Signal Description J3-1 - - VBAT Power supply J3-2 R33 0 VDD SJA1124 VIO reference voltage J3-3 - - J3-4 R34 open P3V3 Alternative SJA1124 VIO reference voltage J3-5 R35 open P5V0 Alternative SJA1124 VIO reference voltage J3-6 - - GND Ground J3-7 - - GND Ground J3-8 - - VBAT Power supply - Not connected
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Quick Start Guide J1 PWR HEADER – POWER SUPPLY J1 PWR Header Signal Description J1PWR-1 VBAT Power supply J1PWR-2 GND Ground J1PWR-3 GND Ground Figure 8: Power supply circuit 9
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