MachXO3-9400 Development Board
Evaluation Board User Guide
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10
FPGA-EB-02004-1.0
Table 2.2. MachXO3 Power Rail Options
MachXO3 Device Power (U3)
3.3 V Option (Assembly)
1.2V~3.3 V Option (Assembly)
Mated Board Option (Assembly)
VCC Core
R123 (DI)
R127 (DNI)*
NA
VCCIO0
R124 (DI)
R128 (DNI)
NA
VCCIO1
R125 (DI)
R129 (DNI)
R151 (DNI) for Arduino
VCCIO2
R126 (DI)
R130 (DNI)
NA
VCCIO3
R132 (DI)
R137 (DNI)
R158 (DNI) for Raspberry Pi
VCCIO4
R133 (DI)
R138 (DNI)
NA
VCCIO5
R134 (DI)
R139 (DNI)
NA
*Note:
R127 is applicable only in 2.5 V~3.3 V (U9) range for LCMXO3LF-9400C device.
Warning:
Only one option should be enabled for each MachXO3 device power rail.
The ASC device (U7) acquires power from the 3.3 V LDO only. A jumper (JP1) needs to be installed to provide the power
and this can also be used as test point to measure current drawn by the ASC.
Table 2.3. ASC Power Connections
ASC Power
ASC Power Pins
ASC Power Isolation (Assembly)
3.3 V VCC
8, 33 of U7
JP1 (DI)