PortalPlayer

PortalPlayer was a that supplied semiconductors, firmware and software for . The company handled semiconductor design and firmware development, while subcontracting the actual to merchant . The company was acquired by Nvidia in 2007.
==History==
PortalPlayer was founded in June 1999 and headquartered in Santa Clara, California with branch offices in , and , India.Company overview, PortalPlayer. Archived 2000-03-02. The company gained recognition for being contracted by Apple Computer for development of the first iPod.Inside Look at Birth of the IPod, by Leander Kahney, Wired, 07/21/2004Inside the Apple iPod Design Triumph by Erik Sherman, Electronics Design Chain magazine, Summer 2002 issue. Archived 2010-10-04. The company went with an in November 2004 and traded on the under PLAY.PortalPlayer IPO plays Friday, by Steve Gelsi, CBS.MarketWatch.com, 11/19/2004 Sales to Apple grew to 90% of the company's gross revenue, which ultimately hurt the company when Apple switched media processor chip vendors for its iPod lines.PortalPlayer dealt setback at Apple, by Mark LaPedus, , 4/19/2006
On November 6, 2006, Nvidia Corporation announced that it would acquire PortalPlayer for about $357 million. The acquisition was completed on January 5, 2007.
==Products==
===PortalPlayer 5002===
Dual ARM7TDMI cores with shared SRAM (3x 32KB banks). Errata in memory controller leads to halved data cache performance but fast SRAM. As the ARM7TDMI does not support cache coherency, individual ARM7TDMI cores do not have coherent views of DRAM. Custom logic is used to introduce coherency into the SRAM. Used by the following devices:
*Apple Computer: 1st, 2nd, and 3rd-generation iPods PP5002, Ipod Linux. Archived 2005-08-29. PortalPlayer, Rockbox Wiki. Accessed 2021-03-02.
===PortalPlayer 5003===
System-on-a-chip containing two ARM7 CPU cores, each running at up to 90 MHz. Fixes 5002 cache bug greatly improving performance of DRAM. Used by:
* OGG on iPod: Why the iPod May Not Have the Horsepower for OGG, Gizmodo. 2004-06-03. Archived 2006-08-13.
===PortalPlayer 5020===
System-on-a-chip containing two ARM CPU cores, each running at 75 MHz. Expanded SRAM to 4 banks (128KB) using a crossbar style switch. Used by:
*Apple Computer: 4th-generation iPod, iPod photo, and 1st-generation iPod mini PP5020, Ipod Linux. Archived 2005-08-28.
* HDD100/120 (unconfirmed)
* Elio M310 (system/pp5020.mi4 contains the string "PP5020AF-05.11-TG01-11.40-TG01-11.40-DT" and "Copyright(c) 1999 - 2003 PortalPlayer, Inc.")
* Player 5GB Virgin Electronics Player 5GB, Virgin Electronics. Archived 2006-01-13.
* Megaplayer 540, has firmware system/pp5020.mi4 including "PP5020AF..." string, it has been sold in Germany as Medion MD81034 by 
* , all variations, including the 5GB, 6GB, and 20GB models
* R-1 (displays "Powered by PortalPlay Inc. 1999-2004")
* Microtrack ver.1 (string "pp5020d-tf")
* MR-100
===PortalPlayer 5021C-TDF===
Used by the following devices:
*Apple Computer: 1st-generation iPod nano and 5th-generation iPod with video iPod nano by Jacqui Cheng, Ars Technica. 2005-09-11.
===PortalPlayer 5022===
SRAM is no longer partitioned into fast and slower banks; all have uniform access speed. Used by:
*Apple Computer: 2nd-generation iPod mini PP5022, Ipod Linux. Archived 2005-08-30.
* HDD1630/HDD6320/HDD6330 > PP 5022 + codec Wolfson WM8731L Philips GoGear HDD16x0 & HDD63x0 Series, Rockbox Wiki. Accessed 2021-03-02.
===PortalPlayer 5024===
PP5022 with integrated AS3514 DAC and power management chip. Used by:
* SanDisk Sansa e200 Series Review by Grahm Skee, Anything But iPod. 2006-03-27. Archived 2007-01-13.
* SA9200 GoGearSA9200info, Rockbox Wiki. Accessed 2021-03-02.
===PortalPlayer APX===
PortalPlayer's application processor series. Used by: 
* Microsoft 
* Early Nvidia mobile processors
==References==
==External links==
*PortalPlayer official website (archived 2007-01-08, 2000-03-02)
*PortalPlayer at Crunchbase
*mi4 by Daniel Stenberg - file format of firmware upgrades for non-Apple PortalPlayer products
*PortalPlayer at the Rockbox Wiki (open source firmware)
* at Wikipedia
Category:Defunct companies
Category:1999 establishments