> Hi, > Can someone tell me why gpmc_a11 to gpmc_a26 signals are > missing from > initial pages for the CBB package specification, in the OMAP3515/03 > Applications Processor document (Rev. C)? > > If you go down to page 91 of the same document, it lists gpmc_a11 to > gpmc_a26. > > Are the address lines multiplexed somehow for the TI OMAP GPMC, > because if you look at the following table, the pin numbers are the > same for a couple of them, e.g AC16 for gpmc_a3, gpmc_a19. I can't > seem to find a pattern here. > > Best regards, > > Elvis
Hi Elvis, The GPMC is an address/data-multiplexed bus sharing the lower 16 address lines between address and data. I admit, that the naming in the Datasheet might be a bit misleading, but the way it should be read is like: GPMC_dxx is the 16 data lines for data GPMC_dxx is the lower 16 address lines for address GPMC_a1 is address line 17 GPMC_a2 address line 18 GPMC_a3 address line 19 - and so forth This as well explains why you though that address lines 3 and 19 could be multiplexed :-) Best regards Søren -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
