Xilinx HDMI 1.4 Product Manual page 33

Miscellaneous Signals with AXI4-Stream Video Interface
Table 2-10 shows the miscellaneous signals with AXI4-Stream video interface selected.
Table 2‐10: Miscellaneous Signals with AXI4-Stream Video Interface
Name
hpd
locked
irq
video_clk
SB_STATUS_IN_tdata
SB_STATUS_IN_tvalid
fid
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 some 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 HDMI Transmitter Subsystem GUI.
Miscellaneous Signals with Native Video Interface
Table 2-11 shows the miscellaneous signals with native video interface selected.
HDMI 1.4/2.0 TX Subsystem
PG235 October 4, 2017
Direction Width
If XGUI option: Hot Plug Detect Active High (Default)
0 - Hot Plug Detect is released
1 - Hot Plug Detect is asserted
Input 1
If XGUI option: Hot Plug Detect Active Low
0 - Hot Plug Detect is asserted
1 - Hot Plug Detect is released
Flag indicating the subsystem is locked to the incoming
video steam.
Output 1
0 - no lock
1 - locked
Output 1 Interrupt request for CPU. Active-High.
Reference Native Video Clock
When AXI4-Stream is selected as Video Interface, an
AXI4-Stream to Video Out Bridge module is added to the
Input 1
HDMI TX Subsystem to convert AXI4-Stream Video into
Native Video. HDMI TX core uses this video_clk to clock in
the Video Data.
Side Band Status input signals
Input 2
Bit 0: link_rdy
Bit 1: video_rdy
Input 1 Side Band Status input valid
Field ID for AXI4-Stream bus. Used only for interlaced
video.
0 - even field
Input 1 1 - odd field
This bit is sampled coincident with the SOF on the
AXI4-Stream bus. If the signal is not used, set the input to
Low.
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