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UCD9222电源控制

Other Parts Discussed in Thread: UCD9222, TMS320C6657

自己设计的TMS320C6657的板卡,参考开发板的UCD9222电源设计,请问一下,UCD9222必须要通过PMBUS进行配置吗,直接使用UCD9222外部引脚pin控制可以吗?