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TMS320F280049: F280049 使用内部LDO产生1.2V电压 , 第80脚 VDDIO_SW 跟 第82 脚 VSS_SW 还需要输入3.3V吗?

Part Number: TMS320F280049

请问一下

F280049 使用内部LDO产生1.2V电压 ,需将第73脚VREGENZ 设成LOW 内部就会产生1.2V电压

那第80脚 VDDIO_SW 跟 第82 脚 VSS_SW 还需要输入3.3V吗?