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Cannot find schematic for nRF2726 nRFgo as a whole

astella

To the kind attention of Nordic support team,
from www.nordicsemi.com/
I downloaded all nRF24 Files.

I found very interesting the nRFgo Motherboard (nRF6310 Rev 1.4) pinout and nRF24LU1+ core schematic  
(nRF24LU1P_DK_User_Guide_manual.pdf and nRF24LU1+ Reference Layout_ver1_0.pdf).
Unfortunately I couldn't succeed in finding the schematic for the nRF2726 nRFgo development board
as a whole. May you please point me out to the right documentation? It is really important to me
to get that schematic, please.
Sorry to ask you, it seems to be straightforward, neverthless I'd like to have
your confirmation about that:
May you please confirm that I only need to bring out from mother board
GND, TCK, TDI, TDO, TMS, PROG and nRF Reset to RESET in order to have the
nRF24LU1+ on a custom board ready to be programmed and debugged?

Mother board P2 connector pin 15 : GND ----> mcu core gnd

Mother board P2 connector pin 17 : TCK ---> mcu core TCK

Mother board P2 connector pin 18 : TDO ---> mcu core TDO

Mother board P2 connector pin 19 : TDI ---> mcu core TDI

Mother board P2 connector pin 20 : TMS ---> mcu core TMS

Mother board P1 connector pin 25 : PROG ---> mcu core PROG

Mother board P1 connector pin 26 : nRF_Reset ---> mcu core reset

Thank you in advance for your kindness.

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  • 0

    The nRF24LU1+ is programmed either over USB with the built in bootloader or via SPI.

    From the product specification, page 145:  "When the PROG pin is set, the GPIO pins are automatically configured as slave SPI (see chapter 13 on page 116"

    You need access to SCSN, SMISO SMOSI and SSCK in addition to PROG and of course ground.

    nRF2726 rev1_1 Schematic.pdf

  • 0 in reply to ketiljo

    Hi ketiljo, thank you so much for pointing me to the right path. So, basically I need the SPI signals for programming (and to enable debug mode itself) and the JTAG ones for accessing your device in debug mode through the driver that you release in order to debug it from Keil environment. I can imagine that exact mechanical dimensions and PCB stack needs to be calculated in order to have a 50 ohm trace inside a keep out zone, still, is there by any chance any particular Nordic application note that you recommend to read in order to reproduce the PCB antenna like it is in nRF2726 Rev1.1 board design? 

    Thank you so much for your efforts and for taking the time to reply. Cheers 

Reply
  • 0 in reply to ketiljo

    Hi ketiljo, thank you so much for pointing me to the right path. So, basically I need the SPI signals for programming (and to enable debug mode itself) and the JTAG ones for accessing your device in debug mode through the driver that you release in order to debug it from Keil environment. I can imagine that exact mechanical dimensions and PCB stack needs to be calculated in order to have a 50 ohm trace inside a keep out zone, still, is there by any chance any particular Nordic application note that you recommend to read in order to reproduce the PCB antenna like it is in nRF2726 Rev1.1 board design? 

    Thank you so much for your efforts and for taking the time to reply. Cheers 

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