
Signal Direction Description
control_read Output control slave port Avalon-MM read signal. When you
assert this signal, the control port produces new data at
readdata.
control_readdata Output control slave port Avalon-MM readdata bus. The IP
core uses these output lines for read transfers.
control_readdatavalid Output control slave port Avalon-MM readdata bus. The IP
core asserts this signal when the readdata bus contains
valid data in response to the read signal.
control_write Input control slave port Avalon-MM write signal. When you
assert this signal, the control port accepts new data from
the writedata bus.
control_writedata Input control slave port Avalon-MM writedata bus. The IP
core uses these input lines for write transfers.
control_waitrequest Output control slave port Avalon-MM waitrequest signal.
control_byteenable Output control slave port Avalon-MM byteenable bus. This bus
enables specific byte lane or lanes during transfers.
Each bit in byteenable corresponds to a byte in
writedata and readdata.
• During writes, byteenable specifies which bytes are
being written to; the slave ignores other bytes.
• During reads, byteenable indicates which bytes the
master is reading. Slaves that simply return readdata
with no side effects are free to ignore byteenable
during reads.
din_N_data Input din_N port Avalon-ST data bus. This bus enables the
transfer of pixel data into the IP core.
din_N_endofpacket Input din_N port Avalon-ST endofpacket signal. This signal
marks the end of an Avalon-ST packet.
din_N_ready Output din_N port Avalon-ST ready signal. The IP core asserts
this signal when it is able to receive data.
din_N_startofpacket Input din_N port Avalon-ST startofpacket signal. This signal
marks the start of an Avalon-ST packet.
din_N_valid Input din_N port Avalon-ST valid signal. This signal identifies
the cycles when the port must input data.
dout_N_data Output dout port Avalon-ST data bus. This bus enables the
transfer of pixel data out of the IP core.
dout_N_endofpacket Output dout_N port Avalon-ST endofpacket signal. This signal
marks the end of an Avalon-ST packet.
UG-VIPSUITE
2015.05.04
Video Mixing Signals
6-7
Video Mixing IP Cores
Altera Corporation
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