HC210 datasheet(13/228 Pages) ALTERA

13 / 228 page

Altera Corporation

2–5

September 2008

Preliminary

HardCopy II and Stratix II Similarities and Differences

■

Unlike Stratix II FPGAs, the HardCopy II M4K block contents cannot

be pre-loaded with a Memory Initialization File (.mif) when used as

RAM. When used as ROM, HardCopy II M4K blocks are initialized

to the ROM contents.

■

When used as RAM, and you select the non-registered output mode,

HardCopy II M4K and M-RAM blocks power up with outputs

unknown. In Stratix II FPGAs, M4K blocks power up with outputs

cleared, while M-RAM blocks power up with outputs unknown. If

registered outputs mode is selected, the outputs are cleared on both

the M4K and M-RAM blocks in HardCopy II.

■

The memory contents are unknown under both instances.

■

All HardCopy II clock network features are the same as in Stratix II

FPGAs.

■

Enhanced PLL and fast PLL implementations in HardCopy II

devices are the same as in Stratix II FPGAs.

■

All Stratix II I/O features and supported I/O standards are offered

in HardCopy II devices.

■

The Joint Test Action Group (JTAG) boundary scan order and length

in HardCopy II devices is different than that of the Stratix II FPGA.

Use a HardCopy II boundary-scan description language (BSDL) file

that describes the re-ordered and shortened boundary scan chain.

■

Unlike Stratix II devices, HardCopy II devices are customized using

two metal layers. Therefore, configuration circuitry is not required.

FPGA configuration emulation and other configuration modes,

including remote system upgrades and design security using

configuration bitstream encryption, are not supported in

HardCopy II devices.

■

Even though configuration is not required, the

CRC_ERROR pin

function is supported by the HardCopy II using Quartus II software

version 6.0 and above. There is no need to recompile the Stratix II

design to eliminate this feature.

Only supplementary information to highlight HardCopy II

similarities and differences compared to the Stratix II FPGA

architecture and functionality is provided in this chapter. For

more information on similarities and differences of available

resources of the HardCopy II, refer to the Migrating Stratix II

Device Resources to HardCopy II Devices chapter of this Handbook.

In addition, the Stratix II Device Handbook has detailed

explanations of architectural features and functions that are

similar to the HardCopy II devices.

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