ZYNQ FPGA Development Board AX7021 User Manual
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Figure 3-7-2: JTAG Interface on the Carrier Board
3.8 LED
The AX7021 has three red LEDs on the carrier board, one of which is the
power indicator (PWR) and two of which are user LEDs (LED1~LED2). When
the carrier board is powered, the power indicator will light up; two user LEDs
are connected to the MIO of the PS, and one is connected to the IO of the PL.
The user can control the light on and off by the program. When the IO voltage is
high, the user LED is off, and when the connection IO voltage is low, the user
LED is illuminated. The schematic diagram of the LED light hardware
connection is shown in Figure 3-8-1:
Figure 3-8-1: LED hardware connection Diagram on the Carrier Board
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