hpdell 发表于 2016-6-14 16:22:11

关于官网的 stm32f469-MB1165原理图里面的DSI-VDD12 ??

关于官网stm32f469i-eval_sch, 原理图编号:MB1165 原理图里面的 DSI-VDD12 这个电源,


没有找到电源提供源,?还是这个引脚 DSI-VDD12 电源的输出脚 ??




金志峰 发表于 2016-6-16 09:22:17

建议看datasheet:)

wofei1314 发表于 2016-6-16 09:24:35

应该是输入电源的吧~

lzts 发表于 2016-6-16 09:39:35

看数据手册, 一般这种脚不管输入输出, 同3.3V电源接都不会有问题的

myfocus-2048857 发表于 2016-6-16 10:25:21

个人感觉不应把

欣辰天下 发表于 2016-6-16 10:45:20

找找参考手册看看

sxhbbde 发表于 2016-6-16 11:07:27

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.

wenyangzeng 发表于 2016-6-16 11:10:56

本帖最后由 wenyangzeng 于 2016-6-16 13:12 编辑


量一下,会不会接到VDD12


Dylan疾风闪电 发表于 2016-6-16 17:02:25

能上传原理图一起帮你找,
不会平白无故的放个NET的:)
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