TI OMAP

OMAP (Open Multimedia Applications Platform) image/video processors developed by Texas Instruments are a category of proprietary system on chips (SoCs) for portable and mobile multimedia applications. OMAP devices generally include a general-purpose ARM architecture processor core plus one or more specialized co-processors. Earlier OMAP variants commonly featured a variant of the Texas Instruments TMS320 series digital signal processor.

On Sept 26 2012 Texas Instruments announced that they are going to wound up the production of OMAP chipsets and they are going to focus on embedded platforms.So the fate of OMAP 5 is unknown .

There are basically 5 series of OMAP chipsets from OMAP 1 to OMAP 5. Many of Nokia Symbian smartphones are powered by OMAP chipset including N95,N96,N97 and some communicator series phones.Also many android phones are powered by 3rd,and 4rth generation chipsets.Also N900 and N9 use OMAP 3 chipsets.

OMAP chips use a ARM processor and Imagetecs  Power vr gpu integrated on the chip.

OMAP 1

The OMAP 1 family started with a TI-enhanced ARM core, and then changed to a standard ARM926 core. It included many variants, most easily distinguished according to manufacturing technology (130 nm except for the OMAP171x series), CPU, peripheral set, and distribution channel (direct to large handset vendors, or through catalog-based distributors). In March 2009, the OMAP1710 family chips are still available to handset vendors.
Products using OMAP 1 processors include hundreds of cell phone models, and the Nokia 770 Internet tablets.

• OMAP171x - 220 MHz ARM926EJ-S + C55x DSP, low-voltage 90 nm technology
• OMAP162x - 204 MHz ARM926EJ-S + C55x DSP + 2 MB internal SRAM, 130 nm technology
• OMAP5912 - catalog availability version of OMAP1621 (or OMAP1611b in older versions)
• OMAP161x - 204 MHz ARM926EJ-S + C55x DSP, 130 nm technology
• OMAP1510 - 168 MHz ARM925T (TI-enhanced) + C55x DSP
• OMAP5910 - catalog availability version of OMAP 1510

OMAP 2

These parts were only marketed to handset vendors. Products using these include both Internet tablets and mobile phones:

• OMAP2431 - 330 MHz ARM1136 + 220 MHz C64x DSP
• OMAP2430 - 330 MHz ARM1136 + 220 MHz C64x DSP + PowerVR MBX lite GPU
• OMAP2420 - 330 MHz ARM1136 + 220 MHz C55x DSP + PowerVR MBX GPU

OMAP 3

The 3rd generation OMAP, the OMAP 3 is broken into 3 distinct groups: the OMAP34x, the OMAP35x, and the OMAP36x. OMAP34x and OMAP36x are distributed directly to large handset (such as cell phone) manufacturers. OMAP35x is a variant of OMAP34x intended for catalog distribution channels. The OMAP36x is a 45 nm version of the 65 nm OMAP34x with higher clock speed.
The video technology in the higher end OMAP 3 parts is derived in part from the DaVinci product line, which first packaged higher end C64x+ DSPs and image processing controllers with ARM9 processors last seen in the older OMAP 1 generation or ARM Cortex-A8.
Not highlighted in the list below is that each OMAP 3 SoC has an "Image, Video, Audio" (IVA2) accelerator. These units do not all have the same capabilities. Most devices support 12 megapixel camera images, though some support 5 or 3 megapixels. Some support HD imaging.

OMAP 4

The 4th generation OMAPs, OMAP 4430, 4460 (formerly named 4440), and 4470 all use dual-core ARM Cortex-A9 and two ARM Cortex-M3 cores. The 4430 and 4460 use a PowerVR SGX540 integrated 3D graphics accelerator, runnning at a clock frequency of 304 and 384 MHz respectively.4470 has a PowerVR SGX544 GPU that supports DirectX 9 which enables it for use in Windows 8 as well as a dedicated 2D graphics core for increased power efficiency up to 50-90%%^]All OMAP 4 come with an IVA3 multimedia hardware accelerator with a programmable DSP that enables 1080p Full HD and multi-standard video encode/decode. OMAP 4 uses ARM-Cortex A9s with ARM's SIMD engine (Media Processing Engine, aka NEON) which may have a significant performance advantage in some cases over Nvidia Tegra 2's Cortex-A9s with non-vector floating point units^. It also uses a dual-channel LPDDR2 memory controller compared to Nvidia Tegra 2's single-channel memory controller.

OMAP 5

The 5th generation OMAP, OMAP 5 SoC uses a dual-core ARM Cortex-A15 CPU with two additional Cortex-M4 cores to offload the A15s in less computationally intensive tasks to increase power efficiency, two PowerVR SGX544MP graphics cores and a dedicated TI 2D BitBlt graphics accelerator, a multi-pipe display sub-system and a signal processor.They respectively support 24 and 20 megapixel cameras for front and rear 3D HD video recording. The chip also supports up to 8 GB of dual channel LPDDR2/DDR3 memory, output to four HD 3D displays and 3D HDMI 1.4 video output. OMAP 5 also includes three USB 2.0 ports, one USB 3.0 OTG port and a SATA 2.0 controller.