MIO 1 pin is a multifunction pin. During NOR boot, the pin is configured as address bit 25 and will be driven low when the system boots from the NOR device. MIO 1 pin must not be connected as a chip select to a second SRAM/NOR device or be used in a way to adversely affect other board logic during boot.
Impact:Minor. MIO1 can not directly be used as chip select for the SRAM device.
Work-around:External board logic is needed to disable the SRAM device during boot.
ConfigurationsAffected:Systems that utilize NOR Boot mode and an SRAM device.
Device Revision(s) Affected: Refer to Zynq-7000Device Advisory Master Answer Record