
Signal Direction Description
din_valid Input din port Avalon-ST valid signal. This signal identifies the
cycles when the port must enter data.
dout_data Output dout port Avalon-ST data bus. This bus enables the
transfer of pixel data out of the IP core.
dout_endofpacket Output dout port Avalon-ST endofpacket signal. This signal
marks the end of an Avalon-ST packet.
dout_ready Input dout port Avalon-ST ready signal. The downstream
device asserts this signal when it is able to receive data.
dout_startofpacket Output dout port Avalon-ST startofpacket signal. This signal
marks the start of an Avalon-ST packet.
dout_valid Output dout port Avalon-ST valid signal. The IP core asserts this
signal when it produces data.
Table 17-4: Control Signals
Note: These signals are present only if you turn on Enable run-time control of input/output frame size and
turn off Bilinear for Scaling algorithm in the Scaler II parameter editor.
Signal Direction Description
control_address Input control slave port Avalon-MM address bus. This bus
specifies a word offset in the Avalon-MM address space.
control_byteenable Input 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, this bus specifies which bytes are being
written to; other bytes are ignored by the slave.
• During reads, this bus indicates which bytes the master
is reading. Slaves that simply return readdata with no
side effects are free to ignore this bus during reads.
control_read Output control slave port Avalon-MM read signal. When you
assert this signal, the control port sends new data at
readdata.
control_readdata Output control slave port Avalon-MM control_data bus. The
IP core uses these output lines for read transfers.
control_readdatavalid Output control slave port Avalon-MM readdata bus. When you
assert this signal, the control port sends new data at
control_readdata.
control_waitrequest Output control slave port Avalon-MM waitrequest signal.
UG-VIPSUITE
2015.05.04
Scaler II Signals
17-13
Scaler II IP Core
Altera Corporation
Send Feedback
Komentarze do niniejszej Instrukcji