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PMBUS接口的定义?

Other Parts Discussed in Thread: UCD9222

我要用CPLD实现PMBUS

我理解UCD9222的PMBUS就是一个I2C接口,加上一个输出ALT, 和一个输入CTL

ALT和CTL的具体定义是什么, 如何使用?

可否不用ALT和CTL, 直接用I2C来设置UCD9222 ?

谢谢!