[email protected] wrote: > Hello, > > I am rolling my own symbols for my components. Namely an analog devices > sharc ADSP-21369 and altera FPGA. The footprint attribute for the chip > is LQFP208 1102. However, the chip has an exposed pad in the bottom. > According to the list > > http://www.geda.seul.org/wiki/geda:scg#footprint_naming_conventions > > There is no LQFPn x EP. How do I proceed?
it looks like almost everything you need is in place. If you have a source tree for pcb, go into lib/ and look at geda.inc. Look around line 448 and you'll see the definition of a LQFP with exposed paddle. If you search a handful of lines later, you'll also see a 208 pin QFP that is not exposed paddle. Basically all you do is copy the one line for either of those and adjust the parameters, rebuild the library, and you are done. The 2 lines you probably want to add are: define(`PKG_LQFP208_28', `PKG_LQFP_50(`$1',`$2',`$3',`208',`28',`0')'); define(`PKG_LQFP208_28_EP', `PKG_LQFP_50(`$1',`$2',`$3',`208',`28',`871')'); note that the `871' should be adjusted to be the correct size for the exposed paddle pad on the board. 871 is the size of the package paddle. -Dan _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
