Block diagram (SBD) of the front end of the network projector, using TI's processor, power management components, wired and wireless connectivity interface solutions Design considerations Emerging trends in network projectors/displays are indicative of a transition to a seamless use scenario where projectors and displays will be part of an IP network for all PC, phone and network devices. These displays and projectors are no longer isolated from each other and can download and display content from any location (network, PC, laptop, network laptop, and smartphone), supporting both wired and wireless connections. Kernel subsystem components: Processors - The DM6446, DM365 and OMAP3530 are ideal for network projectors. The DM6446 and DM365 use the ARM9 with a frequency of 300MHz and have all the on-chip integrated peripherals for this application. USB, EMAC, and Integrated Video Port System (VPSS) with OSD, scaler, and RGB888 peripherals provide a cost-effective solution. The OMAP3530 has a more powerful application processor, the Cortex A8, which runs at 600MHz and requires an external EMAC and PHY. Both the DM6446 and OMAP3530 feature a programmable digital signal processor (DSP) that allows you to differentiate your product to your needs. TI processors are ideal for network projector applications and include scalable solutions with a common software architecture for entry-level and advanced features. The choice of processor usage depends on several factors: All ARM performance required Wired or wireless network access Requires the flexibility of a general-purpose programmable DSP to achieve product differentiation using features such as the Microsoft Pictor codec or video analytics Requires 2D/3D graphics support Low cost, which only requires video codec processing Requires video port and display subsystem functions (integrated DAC, RGB888, on-screen display, scaler support, etc.) System considerations such as the need to integrate USB PHY, 3.3 or 1.8 VI/O, etc. Power Management Unit - A highly integrated power management unit (PMU) that supports the power and peripheral requirements of the application processor. The IC includes power management, audio codecs, USB high-speed transceivers, USB chargers, LED drivers, ADCs, real-time clocks, and embedded power control.
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