本文介绍Zynq设备中MAC地址的手动配置方法，并解释了如何避免3.3V综合过程中Bank1 GMII设置导致的错误。此外，还提供了UG585文档中关于启动模式和PLL的相关信息。
1.zynq MAC地址设置 UG585 (v1.10) page 509:
Set the MAC address. Write to the gem.spec1_addr1_bot and gem.spec1_addr1_top registers.The least significant 32 bits of the MAC address go to gem.spec1_addr1_bot and the most significant 16 bits go to gem.spec1_addr1_top.
LWIP SDK 建立LWIP 网络应用工程
2. Bank 1 GMII 设置3.3V 综合报错；
Voltage Banks 0 and 1 must be set to the same value when an interface spans across these voltage banks. Examples include NOR, 16-bit NAND, and a wide TPIU test port. Other interface configuration may also span the two banks
3.ug585 page166 Table 6-4:
Boot Mode MIO Strapping Pins PLL
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