Fabio, I just did a pin check on arm-usb-ocd and pin 1 and 2 are tied together (0 ohms) . I would be VERY careful plugging it into our eval boads. On my imx53qsb, it would short (SH20) the 1.8V bus to the 3.3V bus. I do see that on the schematic that it is possible to remove a short (SH20) and connect the 1.8V bus (R163) to pin 1&2. What do you think? James
On Wed, Feb 8, 2012 at 7:04 AM, Fabio Estevam <[email protected]> wrote: > On Wed, Feb 8, 2012 at 9:41 AM, James Robinson <[email protected]> wrote: >> Fabio, >> It looks some of the differences in the JTAG on the imx28evk and the >> imx53qsb are: >> 1) Reference voltage is 3.3 on imx28evk and 1.8 on the imx53qsb. > > Yes, we need to make sure our interfaces support 1.8V, > >> 2) pin 11 JTAG_TRST on the imx28evk is going to the cpu and on the >> imx53qsb it is pulled to ground. > > Pin 11 is JTAG_RTCK and it is OK to be pulled down. > >> 3) pin 17 JTAG_DE is floating on the imx2evk and on the imx52qsb is >> pulled high. > > On mx31pdk JTAG_DE is also pulled high and it works fine for me. > > Regards, > > Fabio Estevam ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ OpenOCD-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openocd-devel
