Altera Video and Image Processing Suite User Manual

Page 249

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Signal

Direction

Description

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 19-5: Test Pattern Generator II Signals

Signal

Direction

Description

reset

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.

clock

Input

The main system clock. The IP core operates on the rising

edge of this signal.

control_address

Input

control

slave port Avalon-MM

address

bus. This bus

specifies a word offset into the slave address space.

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_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

readdatavalid

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_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.

UG-VIPSUITE

2015.05.04

Test Pattern Generator Signals

19-7

Test Pattern Generator IP Cores

Altera Corporation

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