I am confused that what kind of jtag is suitable for DA14580. Because DA14580 only has two pins for the connection with jtag(swdio,swclk), is all the 10 pins jtag can be used for DA14580?
Or do you have any recommendations for some model types of jtag that can be used to connect with DA14580, and how to connect them together
Device:
In our products, we usually use the J-Link lite ARM. You should connect SWCLK, SWDIO and GND in order to connect it with the DA14580. You will not need any other connections. Please check the Pro-DK schematics for more information in order to see how the JTAG is connected with the chip.
Thanks, PM_Dialog
do we need to connect vpp pin to Jtag? Because we found a diagram on the Internet, which saying we should connect vpp pin of MCU to the VPP pin of Jtag. But we can't find vpp pin on the jtag.
If we don't need to connect vpp pin to Jtag, where should we connect the vpp pin of MCU to?
Hi zhehanc,
Can you please indicate which JTAG you are using in you design? J-Link lite ARM ? If you could share how the JTAG is connected with the DA14580, would be very helpful.
Thanks, PM_Dialog
The attached zip file and the picture is my connection of DA14580 with an accelerameter, I just wonder whether I need to supply a 6.9V to VPP or just leave it float. If I need to supply it with 6.9V, where can I connect it to the Jtag I use, or I need to design a boost converter for it
another question is that do we need to connect both 16M and 32k crystal for da14580, or just choose one of them. For example, SPI clock frequency of the accelerameter (send information to MCU)we use is max 10M Hz, do we need to connect both 16M and 32k crystal for da14580, or just choose one of them
Hi zhehanc,
Can you please indicate which version of JTAG you are using in your design? You should use both an external crystal oscillator at 16MHx and 32K clock. The 16MHz clock is been using when the system is in active mode. In the other hand, the XTAL32K is been using as a low power clock when the system enters the sleep mode. If you don’t have a XTAL32K you could not operate in sleep mode because the XTAL16M is powered off. In case of the low power clock you could either have an XTAL32K in you PCB or use the internal oscillator. If the internal oscillator is used, the 32KHz crystal pins can be left floating when no crystal is connected. The 580 requires a 16MHz with a 50ppm accuracy which is mandatory for both operating modes (Buck and Boost) and cannot be omitted. Moreover, when operating under BOOST mode, an external 32KHz Crystal is also required and its mandatory as well as the 16MHz crystal. When operating under BUCK mode the 32K crystal can be omitted and can be replaced by the internal RCX oscillator of the 580
Thanks, PM_Dialog
In addition, can you provide me some recommendation on the model type of Jtag that is common used for AD14580, it will be better that you can provide the footprint (Altium designer) of it as well. Becasue when I draw the schematic and PCB circuit, I don't knwo what type of Jtag to use and its footprint
Hi zhehanc,
我已经回答你在这个论坛线程:
https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-hardware-device-reference-designs/model-type
Thanks, PM_Dialog