3.9.2. Running the TX-Only Design - 2025-12-16

F-Tile HDMI IP Design Example User Guide
Version
24.3

Before running the TX-only design, program the design, set the DIP switches, and adjust the clock settings according to the instructions in Compiling and Testing the Design.

For the TX-only design, the following video resolutions are supported:
Video Resolution Color Depth (Bits per components)
720x480p60 (Vic 2) 8
1280x720p60 (Vic 4) 8
1920x1080p60 (Vic 16) 8
3840x2160p30 (Vic 95) 8
3840x2160p60 (Vic 97) (Default) 8

The default resolution is 3840x2160p60 (Vic 97) 8 Bpc. Change the video resolution by following these steps:

  1. Modify the TPG_VIC define variable in main.c software file to configure TPG to the desired resolution.
  2. Modify the TX_MAX_FRL_RATE define variable in main.c software file to configure TPG to the desired FRL Rate (from 0 to 6).
  3. Rebuild the software and run the new .elf file as follows:
    1. Start a Nios® V Command Shell session.
    2. Change directory to /software/tx_control.
    3. Run the make. command.
    4. Download the .elf file with the following command: 
      niosv-download <project directory> / software/tx_control/tx_control.elf -g -r -i 0
    5. Start a JTAG UART terminal session with the following command: 
      juart-terminal -i 0
      This command generates output similar to the following example output:
      CVO 3840x2160P60_MODE DS125BR820 TX = 85
DS125BR820 RX= 46
HDMI TX initialization done
Check TX hotplug:
EDID Sink format support updated:
        Sink Name          = 00980 HDMI RX
        Y444 Support       = 1
        Y422 Support       = 1
        Max TMDS char rate = 600
        SCDC present       = 1
        Max FRL rate       = 6
TX hotplug detected.
TX TMDS Clock Freq = 74250000Hz, out5_divider = 0, out6_divider = 0
Configure SI5391 OUT6 to frequency= 74250000 hz
Preamble
Configure OUTS
Configure OUT6
Configure OUTS
Post-amble
SI5391B [0x000C] = 0x00
SI53918 Locked after reconfiguration
Set TX FRL Rate = 6
HDMI TX LTS: link_training_LTS3
HDMI TX LTS: link_training_LTSP
FRL: Completed link training
software process done