Functional description, Functional description -1, The avalon – Altera Embedded Peripherals IP User Manual
Page 185
Avalon-ST Bytes to Packets and Packets to
Bytes Converter Cores
19
2014.24.07
UG-01085
The Avalon
®
Streaming (Avalon-ST) Bytes to Packets and Packets to Bytes Converter cores allow an
arbitrary stream of packets to be carried over a byte interface, by encoding packet-related control signals
such as
startofpacket
and
endofpacket
into byte sequences.The Avalon-ST Packets to Bytes Converter
core encodes packet control and payload as a stream of bytes. The Avalon-ST Bytes to Packets Converter
core accepts an encoded stream of bytes, and converts it into a stream of packets.
The SPI Slave to Avalon Master Bridge and JTAG to Avalon Master Bridge are examples of how the cores
are used.
For more information about the bridge, refer to
Avalon-ST Bytes to Packets and Packets to Bytes
Functional Description
The following two figures show block diagrams of the Avalon-ST Bytes to Packets and Packets to Bytes
Converter cores.
Figure 19-1: Avalon-ST Bytes to Packets Converter Core
A
v
alon-ST
Sink
Avalon-ST
Bytes to
Packets
Converter
data_in
(bytes)
T
S-
n
ol
av
A
ec
r
u
o
S
data_out
(packet)
Figure 19-2: Avalon-ST Packets to Bytes Converter Core
A
v
alon-ST
Sour
ce
Avalon-ST
Packets to Bytes
Converter
data_in
(packet)
T
S-
n
ol
av
A
Sink
data_out
(bytes)
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