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建议看datasheet
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应该是输入电源的吧~
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个人感觉不应把
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找找参考手册看看
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469的数据手册上有写的：
The DSI (Display Serial Interface) sub-system uses several power supply pins which are independent from the other supply pins: • VDDDSI is an independent DSI power supply dedicated for DSI Regulator and MIPI D-PHY. This supply must be connected to global VDD. • VCAPDSI pin is the output of DSI Regulator (1.2V) which must be connected externally to VDD12DSI. • VDD12DSI pin is used to supply the MIPI D-PHY, and to supply clock and data lanes pins. An external capacitor of 2.2 uF must be connected on VDD12DSI pin. • VSSDSI pin is an isolated supply ground used for DSI sub-system. If DSI functionality is not used at all, then: • VDDDSI pin must be connected to global VDD. • VCAPDSI pin must be connected externally to VDD12DSI but the external capacitor is no more needed. • VSSDSI pin must be grounded. |
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