Imaging competitors choose divergent paths to a nebulous destination

摘要

At first glance, Texas Instruments' $15 (100,000) TMS320DM320, with its prominent dual ARM9 and C54x DSP cores inside, may look identical to the earlier generation $13 DM310. However, whereas the DM310 used a 144-MHz ARM925, the DM320 uses a 160-MHz ARM926EJ-S, along with a sequencer. In the DM320, TI also includes the earlier $11 DM270's memory-traffic controller, supporting chips, modules, and host CPUs with both multiplexed- that is, SDRAM- and nonmulti-plexed buses, versus the DM-310's less comprehensive SDRAM-only controller.