ctzof
Full Member level 3
Hello,
I want to design a wireless sensor board based on SAMR21. The board is going to be a standard half mini PCIe board and I want be able to connect this board to a pc through PCIe mini. The board is going to communicate with the PC with SAMR21s USB interface. The problem is I got a little bit confused with the connection of the USB. All I need is to connect DM and DP to USB_D- and USB_D+ of PCIe or not. Also PCIe produces 3.3 V and I want to use this value to power also the board, can I use 3.3 V for VBUS of USB interface or it has to be 5 V like in standard USB. If anyone knows a little more about PCIe interface then he could help me with this too. Thanks.
I want to design a wireless sensor board based on SAMR21. The board is going to be a standard half mini PCIe board and I want be able to connect this board to a pc through PCIe mini. The board is going to communicate with the PC with SAMR21s USB interface. The problem is I got a little bit confused with the connection of the USB. All I need is to connect DM and DP to USB_D- and USB_D+ of PCIe or not. Also PCIe produces 3.3 V and I want to use this value to power also the board, can I use 3.3 V for VBUS of USB interface or it has to be 5 V like in standard USB. If anyone knows a little more about PCIe interface then he could help me with this too. Thanks.