Performance
Table 1–3. Resource Utilization and Performance (Cyclone II, Cyclone III)
Parameters
f
MAX (MHz) (1) (2)
Device
LEs
Mode of
Register
Operation
Inputs/Outputs
Cyclone II
Encoder
Encoder
Decoder
Encoder
Encoder
Decoder
On
Off
–
100
107
131
100
107
131
250
454
403
250
454
403
Cyclone III
On
Off
–
Notes to Table 1–3:
(1) fMAX is for non-cascaded encoders/decoders.
(2) These results were obtained with the auto-ROM replacement feature disabled in the
Quartus II software. Enabling this feature produces a smaller but slower MegaCore
function.
Table 1–4. Resource Utilization and Performance (Stratix II)
Parameters
fMAX (MHz)
(1) (2)
Combinational
ALUTs
Logic
Registers
Device
Mode of
Register
Operation Inputs/Outputs
Stratix II
Encoder
Encoder
Decoder
On
Off
–
61
68
55
51
13
33
444
585
447
Notes to Table 1–4:
(1) fMAX is for non-cascaded encoders/decoders.
(2) These results were obtained with the auto-ROM replacement feature disabled in the
Quartus II software. Enabling this feature produces a smaller but slower MegaCore
function.
1–4
MegaCore Version 7.2
Altera Corporation
October 2007
8B10B Encoder/Decoder MegaCore Function User Guide
ALTERA [ ALTERA CORPORATION ]
