Layout; Antenna Keepout; Layout Sd Card, I2S, Spi, I2C; Figure 7 Area Around Antenna - Intel Edison Kit for Arduino Hardware Manual

Shield pin configuration
6

Layout

6.1

Antenna keepout

The area under and around the antenna should be kept free of all components, routes, and ground plane. The
Intel® Edison compute module DXF in white with antenna keepout shown in the Arduino* trace layers. See Figure 7.
Figure 7 Area around antenna
6.2

Layout SD card, I2S, SPI, I2C

Table 10 Layout SD card
Signal parameter
Total length L1
DATA/CMD/CTRL to CLK maximum pin-to-pin length mismatch
Minimum main route spacing ratio
CLK to DATA/CMD/CTRL matching
Characteristic single ended impedance
Load capacitance
Note: 1) For SPI, total length is 6000 mils.
2
2) For I C, total length is 8000 mils.
December 2014
Document Number: 331191-004
Metric (mm) Standard (mils)
0.254 to 101.6 mm 10 to 4000 mils
±2.54 mm ±100 mils
60 × 60 µm. 1:1 trace width/space.
±200 mils
42 to 45 ohm (±10%)
2 to 5 pF
Intel® Edison Kit for Arduino*
Hardware Guide
21