解决方案ID: rd02222005_115
最后修改: 2010 年6 月23 日
产品类别: 器件
产品领域: I/O(器件)
产品子领域: I/O 结构/特性
器件系列: CYCLONE II,STRATIX II

标题

Why isn't slow slew rate control an available logic option for Stratix® II and Cyclone® II devices?

说明

The slow slew rate logic option on previous device families manipulated drive strength settings to achieve different edge rates on the output buffers. Stratix®  II and Cyclone®  II devices offer more drive strength settings per I/O standard. Slew rate can be changed by using different drive strength settings. Fast edge rates can be
achieved with larger current settings, slower rates can be achieved with lower current settings. Use the device family's IBIS models to determine actual edge rates for each drive strength setting per I/O standard.

IBIS models for Altera® devices can be downloaded at www.altera.com.

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Altera并不保证此解决方案能够达到客户的预期目的，并不承担所有的解决方案的使用和信赖的责任。