1)tms320c6713b芯片手册48页中有一段备注：
‡ IPD = Internal pulldown, IPU = Internal pullup. [To oppose the supply rail on these IPD/IPU signal pins, use external pullup or pulldown resistors no greater than 4.4 kΩ and 2.0 kΩ, respectively.]
请问To oppose the supply rail on these IPD/IPU signal pins具体什么意思？是防止电源干扰的意思吗？
2)‡ IPD = Internal pulldown, IPU = Internal pullup. [To oppose the supply rail on these IPD/IPU signal pins, use external pullup or pulldown resistors no greater than 4.4 kΩ and 2.0 kΩ, respectively.]
§ To ensure a proper logic level during reset when these pins are both routed out and 3−stated or not driven, it is recommended to include an external 10 kΩ pullup/pulldown resistor to sustain the IPU/IPD, respectively.
上面两段话中我理解意思是一个要求上下拉电阻应不大于4.4 kΩ和2.0 kΩ，另一段要求上下拉电阻应为10 kΩ，这两段话是否相互矛盾？
请各位专家帮忙解答下，非常感谢！