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请教DAC LDAC引脚问题

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pengfulai|  楼主 | 2012-8-7 16:49 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
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airwill| | 2012-8-25 22:28 | 只看该作者
LDAC Functionality
Depending on the control byte, DACs are synchronously updated on the falling edge of the acknowledge signal that follows LS byte. The LDAC pin is required only when an external timing signal is used to update all the channels of the DAC asynchronously. LDAC is a positive edge triggered asynchronous input that allows four DAC output voltages to be updated simultaneously with temporary register data. The LDAC trigger should only be used after the buffer's temporary registers are properly updated through software.

简单地说: 在缓冲模式下, 通过 LDAC 引脚, 通知 DAC 芯片更新输出.

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