Nvidia Jetson Nano Product Design Manual page 4

Chapter 9. SD Card and SDIO......................................................................................... 51
Chapter 10. Audio ........................................................................................................... 54
Chapter 11. Miscellaneous Interfaces ............................................................................. 57
11.1 I2C....................................................................................................................... 57
11.1.1 I2C Design Guidelines ................................................................................... 58
11.2 SPI ...................................................................................................................... 59
11.2.1 SPI Design Guidelines ................................................................................... 61
11.3 UART ................................................................................................................... 62
11.4 Fan ...................................................................................................................... 63
11.5 Debug .................................................................................................................. 64
11.5.1 JTAG ............................................................................................................ 65
11.5.2 Debug UART ................................................................................................. 66
Chapter 12. PADS ........................................................................................................... 67
12.1 Internal Pull-ups for Dual-Voltage Block Pins Powered at 1.8V .............................. 67
12.2 Schmitt Trigger Usage.......................................................................................... 67
12.3 Pins Pulled and Driven High During Power-ON ..................................................... 68
Chapter 13. Unused Interface Terminations .................................................................... 69
13.1 Unused Multi-purpose Standard CMPS Pad Interfaces .......................................... 69
Chapter 14. Jetson Nano Pin Descriptions and Design Checklist...................................... 70
Chapter 15. General Routing Guidelines .......................................................................... 71
15.1 Signal Name Conventions ..................................................................................... 71
15.2 Routing Guideline Format ..................................................................................... 72
15.3 Signal Routing Conventions .................................................................................. 72
15.4 General Routing Guidelines .................................................................................. 72
15.5 General PCB Routing Guidelines........................................................................... 73
15.6 Common High-Speed Interface Requirements ...................................................... 74
NVIDIA Jetso n Nano DG-09502-001_v2.1 | iv