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[问答] FX3S 4线microSD PCB设计?
493 PCB 连接器
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我注意到,从AN70707 PCB指南中缺少4线设计。你能验证我提议的四线微型连接的可行性吗?特别是,我可以无视信号WP,它不存在于我的MICROSD连接器上。VIO2的工作电压为3.3V。需要什么考虑来降低这个电压到1.8V?
蒂亚!

以上来自于百度翻译


     以下为原文
  I notice that 4-wire designs are absent from AN70707 PCB Guidelines. Can you please verify the feasibility of my proposed 4-wire microSD connections? In particular, that I am free to ignore signal WP, which does not exist on my microSD connector. VIO2 working voltage is 3.3V. What considerations are required to lower this voltage to 1.8V?



TIA!
0
2018-11-1 16:57:32   评论 分享淘帖 邀请回答
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你好,
这个示意图看起来不错。对于1.8V没有特别的考虑,只要连接ViO2到1.8V就足够了。
确保固件在CYU3PvE配置中具有IOICFG.S0MODE=CyuU3PySpRtTy4BIT
CYU3PSIbSETIN FPARAMS API中的低电压= Cytru.
当做,
-马杜

以上来自于百度翻译


     以下为原文
  Hi,
 
This schematics looks fine. There isn't any special consideration for 1.8V. It is enough if you connect the VIO2 to 1.8V.
 
Make sure the firmware has io_cfg.s0Mode = CY_U3P_SPORT_4BIT in CyU3PDeviceIOConfigure
and lowVoltage = CyTrue in CyU3PSibSetIntfParams API
 
Regards,
-Madhu
2018-11-1 17:03:59 评论

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