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Carrier board design guidelines (SOM)

120 bytes added, 08:08, 18 July 2014
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==== PCB Tecnology ====
Use a PCB technology as advised in the following table
{| {{table class="wikitable" border="1}} "
| align="center" style="background:#f0f0f0;"|'''Parameter'''
| align="center" style="background:#f0f0f0;"|'''Min'''
===== PCB =====
'''Refer to this table for 10/100 differential pairs routing'''<br/>
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for 10/100 differential pair'''
| align="center" style="background:#f0f0f0;"|'''Min'''
'''Refer to this table for Gigabit differential pairs routing''' <br/>
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for Gigabit Differential Pairs'''
| align="center" style="background:#f0f0f0;"|'''Min'''
* Properly separate analog Supply Rails
===== PCB =====
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for RGMII interface '''
| align="center" style="background:#f0f0f0;"|'''Min'''
|}
<br/>
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for Gigabit Differential Pairs'''
| align="center" style="background:#f0f0f0;"|'''Min'''
* Use a standard RMII PHY that supports correct clock mode (see SOM specification for further details)
===== PCB =====
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for RMII interface '''
| align="center" style="background:#f0f0f0;"|'''Min'''
* Keep as best as possibile the same routing for all RMII traces
<br/>
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for Ethernet Differential Pairs'''
| align="center" style="background:#f0f0f0;"|'''Min'''
* Create schematic in accordance with '''DAVE Embedded Systems''' system-on-modules (SOM) USB specification ( see SOM detailed pages )
==== PCB ====
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for USB Differential Pairs'''
| align="center" style="background:#f0f0f0;"|'''Min'''
* Connector shield must be properly connected
==== PCB ====
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for HDMI Differential Pairs'''
| align="center" style="background:#f0f0f0;"|'''Min'''
* Please refer to '''DAVE Embedded Systems''' system-on-modules (SOM) carrier board documentationfor further information
==== PCB ====
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|'''Parameter for SATA Differential Pairs'''
| align="center" style="background:#f0f0f0;"|'''Min'''
=== SD/MMC Interface ===
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|''' '''
| align="center" style="background:#f0f0f0;"|''' Min '''
=== CAN Interface ===
{| {{table class="wikitable" border="1}}"
| align="center" style="background:#f0f0f0;"|''' '''
| align="center" style="background:#f0f0f0;"|''' Min '''

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