HC210 datasheet(12/228 Pages) ALTERA

12 / 228 page

2–4

Altera Corporation

Preliminary

September 2008

HardCopy Series Handbook, Volume 1

HardCopy II and

Stratix II

Similarities and

Differences

HardCopy II devices preserve the functionality of Stratix II FPGAs.

Implementation of these architectural features in HardCopy II structured

ASICs matches Stratix II FPGA implementation, with a few exceptions.

Table 2–2 shows a qualitative comparison of HardCopy II device feature

implementation versus Stratix II FPGA feature implementation. Other

sections within this chapter provide details on similarities and differences

of a particular HardCopy II feature.

The major similarities and differences between Stratix II FPGAs and

HardCopy II devices are highlighted below:

■

HardCopy II may result in a power reduction of up to 50% than an

equivalent Stratix II FPGAs operating at the same frequency. Power

consumption is design dependent and is a direct result of design

performance and resource utilization.

■

HardCopy II devices offer up to 100% performance improvement

when compared to Stratix II FPGA prototypes. The performance

improvement is achieved by efficient use of logic blocks, metal

interconnect optimization, die size reduction, and customized signal

buffering.

■

Logic blocks, known as HCells, are the basic building block of the

core logic in HardCopy II devices and replace Stratix II adaptive logic

modules (ALMs). HCells implement logic and DSP functions.

■

DSP block functions are implemented using HCells, instead of

dedicated DSP blocks.

■

M4K and M-RAM memory blocks can implement various types of

memory (the same as Stratix II FPGAs), with or without parity,

including true dual-port, simple dual-port, and single-port RAM,

ROM, and first-in first-out (FIFO) buffers.

Table 2–2. HardCopy II Device vs. Stratix II FPGA Feature Implementation

Feature

Equivalent

Different

Logic blocks

DSP blocks

Memory

Clock networks

PLLs

I/O features

Configuration (1)

Note to Table 2–2:

(1)

HardCopy II structured ASICs do not need to be configured upon power-up.

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