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3 Development Board Circuit
3.5 LED
DBUG401-1.0E
14(22)
3.5
LED
3.5.1
Overview
Two green LEDs (share I/O pins with keys) are incorporated into the
development board and are used to display the required status. In addition,
two LEDs are reserved to signify power supply and FPGA loading status.
Users can test the LEDs in the following ways:
If the output signal of related pins is logic low, LED is on;
If the logic is high, LED is off.
3.5.2
LED Circuit
Figure 3-4 LED Circuit
LED1
3
LED2
11
VCC3P3
F_KEY1
F_KEY2
U1
GW1NSR-
LX2CQN48PC5I4_V2.1
3.5.3
Pinout
Table 3-4 LED Pinout
Signal Name
Pin No.
BANK
Description
I/O
F_LED1
17
2
LED1
1.2V/2.5V
F_LED2
18
2
LED2
1.2V/2.5V
3.6
Key
3.6.1
Overview
One key switch is embedded in the development board. Users can
manually input a low level to the corresponding FPGA pins for testing
purposes.