Altera Integer Arithmetic IP - Manual (Page 46)

Port Name Required Description
clock
Yes Clock input port that provides the clock signal to synchronize the
encoding operation. The clock port is required when the
LPM_PIPELINE
value is greater than
0
.
clocken
No Clock enable. If omitted, the default value is
1
.
aclr
No Asynchronous clear input. The active high
aclr
signal can be used at any
time to asynchronously clear the registers.
Table 5-6: ALTECC_DECODER Megafunction Output Ports
Port Name Required Description
q[]
Yes Decoded data output port. The size of the output port depends on the
WIDTH_DATAWORD
parameter value.
err_detected
Yes Flag signal to reflect the status of data received and specifies any errors
found.
err_corrected
Yes Flag signal to reflect the status of data received. Denotes single-bit error
found and corrected. You can use the data because it has already been
corrected.
err_fatal
Yes Flag signal to reflect the status of data received. Denotes double-bit error
found, but not corrected. You must not use the data if this signal is
asserted.
syn_e
No An output signal which will go high whenever a single-bit error is
detected on the parity bits.
Parameters (ALTECC_ENCODER)
The following table lists the parameters for the ALTECC_ENCODER megafunction.
Table 5-7: ALTECC_ENCODER Megafunction Parameters
Parameter Name Type Required Description
WIDTH_DATAWORD
Integer Yes Specifies the width of the raw data. Values are from
2
to
64
. If omitted, the default value is
8
.
WIDTH_CODEWORD
Integer Yes Specifies the width of the corresponding code word.
Valid values are from
6
to
72
, excluding
9
,
17
,
33
, and
65
.
If omitted, the default value is
13
.
LPM_PIPELINE
Integer No Specifies the pipeline for the circuit. Values are from
0
to
2
. If the value is
0
, the ports are not registered. If the
value is
1
, the output ports are registered. If the value is
2
,
the input and output ports are registered. If omitted, the
default value is
0
.
Parameters (ALTECC_DECODER)
5-8 Parameters (ALTECC_ENCODER)
UG-01063
2014.12.19
Altera Corporation ALTECC (Error Correction Code: Encoder/Decoder)
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