1.矛盾的描述：
1.1 SPRUH79A[10.5.22]
The PUPD_SEL settings are not active until the device is out of reset. During reset, all of the
CP[n] pins are pulled down. If the application requires a pull-up during reset, an external
pull-up should be used.
理解：复位期间内部下拉电阻有效,那么管脚状态应该为‘0’；复位后内部上拉电阻有效;管脚状态为'1'
1.2 SPRS590F –JUNE 2009–REVISED MARCH 2014 [6.4.1 Power-On Reset (POR)]
A summary of the effects of Power-On Reset is given below:
• All internal logic (including emulation logic and the PLL logic) is reset to its default state
• Internal memory is not maintained through a POR
• RESETOUT goes active
• All device pins go to a high-impedance state
• The RTC peripheral is not reset during a POR. A software sequence is required to reset the RTC
理解:复位期间,管脚状态为'高阻'；
以上描述矛盾？解释一下。
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2.GPIO的驱动能力在哪里有说明？
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测试电路1：
GPIO-------------|>---------[][][][](2k)------| gnd
复位期间不亮,但复位后LED微亮(比正常配置GPIO后亮度低)，与1.1描述匹配。
测试电路2：
GPIO-------------<|---------[][][][](2k)------| vcc
在复位期间LED会闪一下(很暗,电流应该很小),与1.1描述匹配。
问题：
1.GPIO的驱动能力是否足够;
2.如何解决以上两个电路的问题。
