解决方案ID: rd11222004_3886
最后修改: 2010 年6 月23 日
产品类别: 器件
产品领域: 配置(FPGA)
产品子领域: 配置管脚
器件系列: CYCLONE,STRATIX,STRATIX II

标题

What is the status of the I/O pins if the VCCIO of the I/O Bank's in which these pins reside is not applied during configuration for Stratix® II, Stratix® and Cyclone® devices?

说明

During configuration, if VCCIO is withheld from any non-configuration⁽¹⁾ I/O bank, the bank will behave as described by Altera's hot socketing guidelines.  The I/O pins in the unpowered banks will be tristated with the corresponding weak pull-ups disabled.

(1) It is possible to leave some banks unpowered although VCCIO must be applied to the I/O banks that contain configuration pins.  If VCCIO is not applied to the configuration banks, configuration will not be successful.

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