Stratix II器件中的MSEL引脚通过5kΩ电阻内部下拉。通过10k欧姆电阻将外部MSEL引脚拉高(至VCCPD = 3.3V)将为MSEL引脚提供约1.1V的不确定值。这可能会阻止器件配置。因此,您应该将MSEL引脚直接连接到VCCPD(3.3V)或GND。或者,您可以使用零欧姆电阻将它们连接到VCCPD或GND。
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