Altera Video and Image Processing Suite Bedienungsanleitung Seite 87

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Signal Direction Description
is_sop Output dout port Avalon-ST startofpacket signal. This signal is
asserted when the IP core is starting a new frame.
is_valid Output dout port Avalon-ST valid signal. This signal is asserted
when the IP core produces data.
overflow Output Clocked video overflow signal. A signal corresponding to
the overflow sticky bit of the Status register synchronized
to vid_clk. This signal is for information only and no
action is required if it is asserted.
Note: Present only if you turn on Use control port.
refclk_div Output A single cycle pulse in-line with the rising edge of the h
sync.
sof Output Start of frame signal. A change of 0 to 1 indicates the start
of the video frame as configured by the SOF registers.
Connecting this signal to a CVO IP core allows the
function to synchronize its output video to this signal.
sof_locked Output Start of frame locked signal. When asserted, the sof signal
is valid and can be used.
status_update_int Output control slave port Avalon-MM interrupt signal. When
asserted, the status registers of the IP core have been
updated and the master must read them to determine
what has occurred.
Note: Present only if you turn on Use control port.
vid_clk Input Clocked video clock. All the video input signals are
synchronous to this clock.
vid_data Input Clocked video data bus. This bus enables the transfer of
video data into the IP core.
vid_datavalid Input Clocked video data valid signal. Assert this signal when a
valid sample of video data is present on vid_data.
vid_f Input Clocked video field signal. For interlaced input, this signal
distinguishes between field 0 and field 1. For progressive
video, you must deassert this signal.
Note: For separate synchronization mode only.
vid_h_sync Input Clocked video horizontal synchronization signal. Assert
this signal during the horizontal synchronization period of
the video stream.
Note: For separate synchronization mode only.
4-28
Clocked Video Interface Signals
UG-VIPSUITE
2015.05.04
Altera Corporation
Clocked Video Interface IP Cores
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