Altera Video and Image Processing Suite Manuel d'utilisateur télécharger pdf (Page 86)

Signal Direction Description

av_read Input control slave port Avalon-MM read signal. When you

assert this signal, the control port drives new data onto

the read data bus.

Note: Present only if you turn on Use control port.

av_readdata Output control slave port Avalon-MM read data bus. These

output lines are used for read transfers.

Note: Present only if you turn on Use control port.

av_waitrequest Output

control slave port Avalon-MM wait request bus. This

signal indicates that the slave is stalling the master transac‐

tion.

Note: Present only if you turn on Use control port.

av_write Input control slave port Avalon-MM write signal. When you

assert this signal, the control port accepts new data from

the write data bus.

Note: Present only if you turn on Use control port.

av_writedata Input control slave port Avalon-MM write data bus. These

input lines are used for write transfers.

Note: Present only if you turn on Use control port.

av_byteenable Input control slave port Avalon-MM byteenable bus. These

lines indicate which bytes are selected for write and read

transactions.

Table 4-16: Clocked Video Input Signals

Signal Direction Description

rst Input The IP core asynchronously resets when you assert this

signal. You must deassert this signal synchronously to the

rising edge of the clock signal.

is_clk Input Clock signal for Avalon-ST ports dout and control. The

IP core operates on the rising edge of the is_clk signal.

is_data Output dout port Avalon-ST data bus. This bus enables the

transfer of pixel data out of the IP core.

is_eop Output dout port Avalon-ST endofpacket signal. This signal is

asserted when the IP core is ending a frame.

is_ready Input dout port Avalon-ST ready signal. The downstream

device asserts this signal when it is able to receive data.

UG-VIPSUITE

2015.05.04

Clocked Video Interface Signals

4-27

Clocked Video Interface IP Cores

Altera Corporation

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Altera Video and Image Processing Suite Manuel d'utilisateur Page 86

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