| 32 | 48 | 48 | 39 | 43 | |
| UARTs | 4 | 3 | 2 | 2 | 3 |
| USB 1.1 | Host + device | Host + device | USB 2.0 | Host + device | Host + device |
| AC-97 audio | 1 | 1 | Via SPC | 1 | Via SPC |
| I2S controller | 1 | 1 | Via SPC | Via SPC | |
| SD/MMC | N | 2 | 2 | N | N |
3.2.7. Other MIPS
As we pointed out earlier, nearly 100 current MIPS licensees are shown on the MIPS Technologies licensees web page, at www.mips.com/content/Licensees/Pr oductCatalog/licensees. Unfortunately, it is not possible in the space provided here to cover them all. Start your search at the MIPS technologies website for a good cross-section of the MIPS processor vendors.
For example, ATI Technologies uses a MIPS core in its Xilleon set-top box family of chipsets. Cavium Network's Octeon family uses MIPS64 cores in a variety of multicore processor implementations. Integrated Device Technology, Inc., (IDT) has a family of integrated communications processors called Interprise, based on the MIPS architecture. PMC-Sierra, NEC, Toshiba, and others have integrated processors based on MIPS. All of these and more are well supported under Linux.
3.2.8. ARM
The ARM architecture has achieved a very large market share in the consumer electronics marketplace. Many popular and now ubiquitous products contain ARM cores. Some well-known examples include the Sony PlayStation Portable (PSP), Apple iPod Nano,[23] Nintendo Game Boy Micro and DS, TomTom GO 300 GPS, and the Motorola E680i Mobile Phone, which features embedded Linux. Processors containing ARM cores power a majority of the world's digital cellular phones, according to the ARM Corporate Backgrounder at www.arm.com/miscPDFs/3822.pdf.
The ARM architecture is developed by ARM Holdings, plc and licensed to semiconductor manufacturers around the globe. Many of the world's leading semiconductor companies have licensed ARM technology and are currently shipping integrated processors based on one of the several ARM cores.
3.2.9. TI ARM
Texas Instruments uses ARM cores in the OMAP family of integrated processors. These processors contain many integrated peripherals intended to be used as single-chip solutions for various consumer products, such as cellular handsets, PDAs, and similar multimedia platforms. In addition to the interfaces commonly found on integrated processors, such as UARTs and I2C, the OMAP devices contain a wide range of special- purpose interfaces, including the following:
• LCD screen and backlight controllers
• Buzzer driver
• Camera interface
• MMC/SD card controller
• Battery-management hardware
• USB client/host interfaces
• Radio modem interface logic
• Integrated 2D or 3D graphics accelerators
• Integrated security accelerator
• S-Video outputs
• IrDA controller
• DACs for direct TV (PAL/NTSC) video output
