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Board Description
4.2.5
Power Supplies
The SAM9M10 Board contains four regulated power supplies:
3.3 VDC Supply
1.8 VDC Supply
1.0 VDC Core Supply
1.0 VDC Core UTMI Supply, PLL
The outputs of these regulated power supplies 1 are distributed as necessary to each part of the circuit
board.
The 3.3 VDC Supply is generated by an adjustable LDO. It accepts VIN 5 VCC power and outputs a
regulated +3.3 V to most other circuits on the board.
The 1.8 VDC Supply (VDDIOM0, VDDIOM1) is generated by an adjustable LDO. It is powered by VIN
5 VCC power and outputs a regulated +1.8V.
The 1.0 VDC Core Supply (VDDCORE) is generated by an adjustable LDO. It is powered by the
output of the 3.3 VDC Supply.
The 1.0 VDC Core Supply (VDDUTMIC, VDDPLLUTMI and VDDPLLA) is generated by an adjustable
LDO RT9186A series. It is powered by the output of the 3.3 VDC Supply.
Note:
1. Corresponding test points (TP1 to TP4, GND) are used with jumpers (JP1.1 to JP7) to
permit probing of these voltages.
AT91SAM9M10-G45-EK User Guide
4-7
6495B–ATARM–21-Apr-10
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