Table 2.1. Onboard Major Power Rails; Table 2.2. Machxo5-25 Io Bank Power Rails Stuff; Table 2.3. Machxo5-25 Major Power Rails Stuff - Lattice Semiconductor MachXO5-NX User Manual

Table 2.1. Onboard Major Power Rails

Power Net Name
+12V
PS_5V
VBUS_5V
+5.0V
+3.3V
+1.2V
+2.5V
+1.8V
+2.8V
+1.0V
+3.3V_RASP
+3.3V_AR
As shown in Figure 2.1, this board provides multiple power options for I/O bank voltage flexibility. Table 2.2
summarizes the VCCIO support matrix on this board. For an example, VCCIO0 and VCCIO2 share the same three
positions jumper J25 and short its Pin 1 and Pin 2 can bring the 3.3 V LDO output to both I/O bank 0 and bank 2. For
power consumption evaluation, this board facilitate some two-position jumpers with 1 Ω sense resistors to measure
the voltage drop on each power rail, then the supply current can be calculated.

Table 2.2. MachXO5-25 IO Bank Power Rails Stuff

MachXO5-25 Power (U3) Jumpers
VCCIO0
VCCIO1
VCCIO2
VCCIO3
VCCIO4
VCCIO5
VCCIO6
VCCIO7
VCCIO8
VCCIO9
Other than power rail for each I/O Bank, this board also provides some test points to evaluate the major power
consumptions for MachXO5-25 device.

Table 2.3. MachXO5-25 Major Power Rails Stuff

MachXO5-25 Power (U3)
VCC_CORE
VCC_AUX/VCC_AUXH/VCCAUXA
VCC_ADC
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All other brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice.
FPGA-EB-02052-0.90
Primary Source
DC Power Jack (J17)
DC/DC Regulator (U11 )
Mini-USB (J11)
Selected by Slide switch (SW6)
DC/DC Regulator (U12)
Raspberry Pi Header (J6)
Arduino Header (J4)
3.3V 2.5V
J25 Pin 1-2 Pin 2-3
— Fixed —
J25 Pin 1-2 Pin 2-3
J26 Pin 1-2
J29 — Pin 1-2
J20 — — Pin 2-3
J21 — — Pin 2-3
J22 Pin 1-2 — Pin 2-3
J23 Pin 1-2 —
— — —
Power Test Point
JP18
JP14
JP17
Preliminary Evaluation Board User Guide
LDO (U8)
LDO (U16)
LDO (U13)
LDO (U15)
LDO (U20)
1.8V 1.2V Ext 3.3V
— — —
— — —
— — —
— — Pin 2-3
— Pin 2-3 —
Pin 1-2 —
Pin 1-2 —
— —
— — Pin 2-3
Fixed — —
Voltage Drop Resistor
R112
R131
R137
MachXO5-NX Development Board
Test Point
TP20
—
—
TP14
TP15
TP18
TP16
TP17
TP19
TP21
—
—
Power Test Sense Resistor
Point of 1 Ω
JP19 R132
JP16 R133
JP20 R134
JP21 R235
JP22 R236
JP23 R237
JP24 R238
JP25 R239
JP26 R240
JP15 R138
Resistance
0.01 Ω
1 Ω
1 Ω
11