Altera 8B10B Encoder/Decoder MegaCore Function Manuel d'utilisateur télécharger pdf (Page 7)

Chapter 1: About This MegaCore Function 1–3

Performance and Resource Utilization

May 2011 Altera Corporation 8B10B Encoder/Decoder MegaCore Function User Guide

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 1–4 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 1–3. Resource Utilization and Performance (Cyclone II and Cyclone III)

Device

Parameters

LEs f

MAX

(MHz) (1)

Mode of Operation

Inputs/Outputs

Cyclone II

Encoder On 100 250

Encoder Off 107 403

Decoder – 131 403

Cyclone III

Encoder On 100 250

Encoder Off 107 403

Decoder – 131 403

Note to Table 1–3:

(1) f

MAX

is for non-cascaded encoders/decoders.

Table 1–4. Resource Utilization and Performance (Stratix II and Stratix III)

Device

Parameters

Combinational

ALUTs

Logic

Registers

MAX

(MHz) (1)

Mode of Operation

Inputs/Outputs

Stratix II

Encoder On 61 51 444

Encoder Off 68 13 585

Decoder – 55 33 447

Stratix III

Encoder On 60 51 510

Encoder Off 68 13 675

Decoder – 55 33 520

Note to Table 1–4:

(1) f

MAX

is for non-cascaded encoders/decoders.

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