Miscellaneous Signals with Native Video Interface - 3.2 English

HDMI 1.4/2.0 Transmitter Subsystem Product Guide (PG235)

Document ID
PG235
Release Date
2023-10-18
Version
3.2 English

The following table shows the miscellaneous signals with native video interface selected.

Table 1. Miscellaneous Signals with Native Video Interface
Name I/O Width Description
hpd I 1

If XGUI option: Hot Plug Detect Active-High (Default)

  • 0 - Hot Plug Detect is released
  • 1 - Hot Plug Detect is asserted

If XGUI option: Hot Plug Detect Active-Low 1

  • 0 - Hot Plug Detect is asserted
  • 1 - Hot Plug Detect is released
irq O 1 Interrupt request for CPU. Active-High.
SB_STATUS_IN_tdata I 8

Side Band Status input signals

  • Bit 0: link_rdy
  • Bit 1: video_rdy
  • Bits [7:2]: Reserved
SB_STATUS_IN_tvalid I 1 Side Band Status input valid
video_rst O 1 Video reset signal in video_clk domain. Active-High.
  1. The Hot Plug Detect (HPD) signal is driven by an HDMI sink and asserted when the HDMI cable is connected to notify the HDMI source of the presence of an HDMI sink. In most cases, the HDMI sink is simply connected to 5V power signal. Therefore, in the PCB, if you choose to use a voltage divider or level shifter, the HPD polarity remains as Active-High. However, if you add an inverter to the HPD signal, then the HPD polarity must be set to Active-Low in the HDMI 1.4/2.0 TX Subsystem GUI.