Table 23. On-board Push Button and User LED Functions
LEDs Function
cpu_resetn Press once to perform system reset.
user_pb[0] Press once to toggle the HPD signal to the standard HDMI source.
user_pb[1] • Press and hold to instruct the TX core to send the DVI encoded signal.
• Release to send the HDMI encoded signal.
user_pb[2] • Press and hold to instruct the TX core to stop sending the InfoFrames from
the sideband signals.
• Release to resume sending the InfoFrames from the sideband signals.
USER_LED[0] RX HDMI PLL lock status.
• 0 = Unlocked
• 1 = Locked
USER_LED[1] RX transceiver ready status.
• 0 = Not ready
• 1 = Ready
USER_LED[2] RX HDMI core lock status.
• 0 = At least 1 channel unlocked
• 1 = All 3 channels locked
USER_LED[3] RX oversampling status.
• 0 = Non-oversampled (data rate > 1,000 Mbps in Intel Arria 10 device)
• 1 = Oversampled (data rate < 100 Mbps in Intel Arria 10 device)
USER_LED[4] TX HDMI PLL lock status.
• 0 = Unlocked
• 1 = Locked
USER_LED[5] TX transceiver ready status.
• 0 = Not ready
• 1 = Ready
USER_LED[6] TX transceiver PLL lock status.
• 0 = Unlocked
• 1 = Locked
USER_LED[7] TX oversampling status.
• 0 = Non-oversampled (data rate > 1,000 Mbps in Intel Arria 10 device)
• 1 = Oversampled (data rate < 1,000 Mbps in Intel Arria 10 device)
2.8 Simulation Testbench
The simulation testbench simulates the HDMI TX serial loopback to the RX core.
2 Intel FPGA HDMI Design Example Detailed Description
UG-20077 | 2017.11.06
Intel
®
FPGA HDMI Design Example User Guide for Intel
®
Arria 10 Devices
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