Efinix T20F256C-DK, Руководство пользователя

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Trion T20 BGA256 Development Kit User Guide
Header J1
J1 is a 2-pin header that provides 5 V output as a power source for the external devices that
interface with the development board. The 5 V DC power supply from header CON1
supplies this 5 V output.
Table 9: J1 Pin Assignments
Pin Number Signal
1 5V
2 GND
Note: If you are supplying power to the board using the micro-USB cable only, limited power is available
(<500 mA).
Headers J3 and J5
J3 is a 3-pin header used to select the source for the T20F256C clock input and PLL input.
Drive a 3.3 V clock source input into the SMA connector, J5, if you are using the external
clock source option.
Table 10: Clock Selection Pin Assignments
Pin Number Signal
1 50 MHz on-board oscillator
2 GPIOR_125_CLK10 and GPIOR_157_PLLN
3 External clock source from SMA input J5
• A shunt connecting J3 pins 1 and 2 selects the 50 MHz on-board oscillator (default).
• A shunt connecting J3 pins 2 and 3 selects the clock source from SMA input J5.
User Outputs
The board has 8 green user LEDs that are connected to I/O pins in T20F256C banks 1A/1B.
By default, the T20F256C I/O connected to these LEDs have a pull-up resistor that turns the
LEDs off; to turn a given LED on, pull the corresponding I/O signal low.
Table 11: User Outputs
Reference Designator T20F256C Pin Name Active
D3 GPIOR_104 Low
D4 GPIOR_105 Low
D5 GPIOR_117 Low
D6 GPIOR_118 Low
D7 GPIOR_153 Low
D8 GPIOR_154 Low
D9 GPIOR_155 Low
D10 GPIOR_156 Low
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