Table of Contents
1. Introduction..................................................................................................................................... 2
1.1. Features........................................................................................................................................................................2
2. Hardware......................................................................................................................................... 3
2.1. Specifications...............................................................................................................................................................3
2.2. External Connections...................................................................................................................................................4
2.2.1. System Control & External Bus.......................................................................................................................4
2.2.2. USB.....................................................................................................................................................................5
2.2.3. JTAG...................................................................................................................................................................5
2.2.4. Ethernet ..............................................................................................................................................................5
2.2.5. I2C........................................................................................................................................................................6
2.2.6. SPI.......................................................................................................................................................................6
2.2.7. CAN.....................................................................................................................................................................7
2.2.8. IRQs....................................................................................................................................................................7
2.2.9. Oscillators...........................................................................................................................................................7
2.2.10. SD/Multimedia Card......................................................................................................................................7
2.2.11. I2S Audio........................................................................................................................................................8
2.2.12. Serial Ports.....................................................................................................................................................8
2.2.13. GPIO ...............................................................................................................................................................9
2.2.14. Touchscreen / Analog-to-Digital Convertor (ADC).................................................................................10
2.2.15. LCD ...............................................................................................................................................................10
2.2.16. Boot Options ................................................................................................................................................11
2.2.17. Power Connections.....................................................................................................................................11
2.3. Real-Time Clock........................................................................................................................................................11
2.4. Watchdog Timer ........................................................................................................................................................11
2.5. Status LED.................................................................................................................................................................11
3. Design Considerations.................................................................................................................. 12
3.1. The EMAC SoM Carrier-SoM-200ES.......................................................................................................................12
3.2. Power.........................................................................................................................................................................12
3.2.1. Battery Backup ................................................................................................................................................12
3.2.2. Shutdown Logic Pins......................................................................................................................................12
4. Software......................................................................................................................................... 13
