On Thu, Feb 9, 2012 at 5:20 PM, <[email protected]> wrote: > Mike, > Thank you for your reply. > That is Broadcom BCM 7401 that has EJTAG 2.0 > I can read IDCODE, IMPCODE but can not make the CPU to enter Debug mode > neither > write any data to a given address. > Must I clear any bits at a specific location first to be able to write any > data?
Find a EJTAG manual. It is a first hit on a Google. In Table 6-9 EJTAG Control Register Field Descriptions you will see EjtagBrk (bit 12 of EJTAG control register) explained. This is what you are looking for. BR, Drasko >> On Thursday 09 February 2012 07:52:35 [email protected] wrote: >> > I need to read data, from SDRAM of my device, via JTAG. >> > Must I make my device enter Debug state or only Halt state? >> > Or none is nescessary? >> >> this tends to be SoC/core specific >> -mike >> > > > > ------------------------------------------------------------------------------ > Virtualization & Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > UrJTAG-development mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/urjtag-development ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ UrJTAG-development mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/urjtag-development
