User manual

rev. C
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1. L2 is now placed further from USB_HOST connector to avoid contact
2. Ethernet PHY Micrel KS8721 is changed to LAN8710A-EZC in RMII
3. Changed C18 from 100n to 4.7uF/6.3V according to the datasheet. C18 is now renamed C3.
4. STAT1, STAT2 and PWR_LED were changed to 0603 and its resistors to 2.2k.
5. SD/MMC capacitor was replaced by 2x22uF/6.3V capacitors.
6. LM3526 was exchanged with MIC2026-1YM and connection between pin 1 and pin4 was swapped
because the default EN level is opposite.
7. All tantalum capacitors are changed to ceramic.
8. Optimizations in the values of few other elements as well.
9. R28(0R) was changed to 10k, C55=10uF/6.3V was added and RST connection was removed from the
PHY!