
Signal Direction Description
din_ready Output din_N port Avalon-ST ready signal. The IP core asserts
this signal when it is able to receive data.
din_startofpacket Input din_N port Avalon-ST startofpacket signal. This signal
marks the start of an Avalon-ST packet.
din_valid Input din_N port Avalon-ST valid signal. This signal identifies
the cycles when the port must input 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_N port Avalon-ST endofpacket signal. This signal
marks the end of an Avalon-ST packet.
dout_ready Input dout_N port Avalon-ST ready signal. The downstream
device asserts this signal when it is able to receive data.
dout_startofpacket Output dout_N port Avalon-ST startofpacket signal. This signal
marks the start of an Avalon-ST packet.
dout_valid Output dout_N port Avalon-ST valid signal. The IP core asserts
this signal when it produces data.
2D FIR Filter Control Registers
Table 5-3: 2D FIR Filter Control Register Map
The width of each register in the 2D FIR Filter control register map is 32 bits. The coefficient registers use integer,
signed 2’s complement numbers. To convert from fractional values, simply move the binary point right by the
number of fractional bits specified in the parameter editor.
Note:
The control data is read once at the start of each frame and is buffered inside the IP core, so the registers
can be safely updated during the processing of a frame.
Address Register Description
0 Control Bit 0 of this register is the Go bit, all other bits are unused.
Setting this bit to 0 causes the IP core to stop the next time
control information is read.
1 Status Bit 0 of this register is the Status bit, all other bits are unused.
2 Coefficient 0 The coefficient at the top left (origin) of the filter kernel.
3 Coefficient 1 The coefficient at the origin across to the right by one.
4 Coefficient 2 The coefficient at the origin across to the right by two.
UG-VIPSUITE
2015.05.04
2D FIR Filter Control Registers
5-5
2D FIR Filter IP Core
Altera Corporation
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