Chapter 1: About This MegaCore Function
1–3
Performance and Resource Utilization
Performance and Resource Utilization
This section lists the resource utilization and performance of the 8B10B
Encoder/Decoder MegaCore function in different Altera device families. These
results were obtained using the Quartus ? II software version 9.1 with the auto-ROM
replacement feature disabled. Enabling this feature produces a smaller but slower
MegaCore function.
Table 1–3 shows the performance and resource utilization for Cyclone II
(EP2C35F484C6) and Cyclone III (EP3C80F780C6).
Table 1–3. Resource Utilization and Performance (Cyclone II and Cyclone III)
Parameters
Device
Cyclone II
Cyclone III
Mode of Operation
Encoder
Encoder
Decoder
Encoder
Encoder
Decoder
Register
Inputs/Outputs
On
Off
On
Off
LEs
100
107
131
100
107
131
f MAX (MHz) (1)
250
403
403
250
403
403
Note to Table 1–3 :
(1) f MAX is for non-cascaded encoders/decoders.
Table 1–4 shows the performance and resource utilization for Stratix II
(EP2S30F484C3) and Stratix III (EP3SE110F780C2). The performance of the MegaCore
function in Stratix IV devices is similar to Stratix III devices.
Table 1–4. Resource Utilization and Performance (Stratix II and Stratix III)
Parameters
Device
Stratix II
Stratix III
Mode of Operation
Encoder
Encoder
Decoder
Encoder
Encoder
Decoder
Register
Inputs/Outputs
On
Off
On
Off
Combinational
ALUTs
61
68
55
60
68
55
Logic
Registers
51
13
33
51
13
33
f MAX (MHz) (1)
444
585
447
510
675
520
Note to Table 1–4 :
(1) f MAX is for non-cascaded encoders/decoders.
May 2011
Altera Corporation
8B10B Encoder/Decoder MegaCore Function User Guide
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