Altera Reed-Solomon II MegaCore Function - Manual (Page 25)

Name Avalon-ST Type Direction Description
in_error error
Input Error signal. Specifies if the input data symbol is an
error and whether the decoder can consider it as an
erasure. Erasures-supporting decoders only.
out_
startof-
packet
sop
Output Start of packet (codeword) signal. This signal
indicates the codeword boundaries on the
in_
data[]
bus. When the IP core drives this signal
high, it indicates that the start of packet is present
on the
in_data[]
bus. The IP core asserts this
signal on the first transfer of every codeword.
out_
endofpacket
eop
Output End of packet (codeword) signal. This signal
indicates the packet boundaries on the
in_data[]
bus. When the IP core drives this signal high, it
indicates that the end of packet is present on the
in_data[]
bus. The IP core asserts this signal on
the last transfer of every packet.
out_ready ready
Input Data transfer ready signal to indicate that the
downstream module is ready to accept data. The
source provides new data (if available) when you
assert the
out_ready
signal and stops providing
new data when you deassert the
out_ready
signal.
If the source is unable to provide new data, it
deasserts
out_valid
for one or more clock cycles
until it is prepared to drive valid data interface
signals.
out_valid valid
Output Data valid signal. The IP core asserts the
out_valid
signal high, whenever a valid output is on
out_
data
; the IP core deasserts the signal when there is
no valid output on
out_data
.
out_data data
Output Contains decoded output when the IP core asserts
the
out_valid
signal. The corrected symbols are in
the same order that they are entered.
out_channel channel
Output Specifies the channel whose result is presented at
out_data
. Available only when you configure the
IP core to support multiple channels.
out_error error
Output Indicates non-correctable codeword (decoder only).
Valid when the IP core asserts
out_endofpacket
.
Table 3-5: Status Interface Signals
Name Avalon-ST Type Direction Description
status_error_value conduit
Output Error correction value for every
valid data symbol.
UG-01090
2015.05.01
Reed-Solomon II IP Core Signals 3-9
Reed-Solomon II IP Core Functional Description Altera Corporation
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