Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.
CompactFlash Association announces revision 3.0 of the CF+ & CompactFlash specification
Posted on 27-Sep-2004 18:36 | Tags Filed under: News


CompactFlash Association announces revision 3.0 of the CF+ & CompactFlash specification
The CF+ & CompactFlash Specification Revision 3.0 increases the CompactFlash interface data transfer rate from 16MB/sec to 66MB/sec, while maintaining forward and backward compatibility with old and new host systems.

Flash chip and controller technology advances have allowed flash chips to achieve sustained data transfer rates of over 12MB/sec. The development of the 66MB/sec interface means that the CompactFlash interface will not restrict the sustained data transfer rate of CompactFlash cards in the near future.

DMA interface mode is also included and reduces the processor power required to manage the CompactFlash data transfers. Ultra DMA 33 and UltraDMA66 interface modes will increase the CompactFlash interface data transfer rate to 66MB/sec. Both of these DMA interface modes are well defined and tested by their usage on IDE hard disk drives.

Faster PCMCIA ATA Memory and I/O modes have also been added and can provide interface transfer rates up to 25MB/sec.

The original and current CompactFlash Specification allows for addressing 137GB cards. However, there is another issue that limits the usable size of CompactFlash cards. Currently the FAT16 file system is used for cards up to 2.2GB. To use the full capacity of cards over 2.2GB capacity, the FAT32 file system is necessary.

The CFA is currently recommending that systems be designed to be compatible with FAT12, FAT16 and FAT32 file systems in order to be able to use the full capacity range of CompactFlash cards currently being offered. The newest digital cameras now support FAT12, FAT16 and FAT32.






comments powered by Disqus


Trending now »

Hot discussions in our forums right now:

iPhone 8/iPhone X, impressions?
Created by surfisup1000, last reply by kharris on 26-Sep-2017 17:20 (444 replies)
Pages... 28 29 30


Car pulling left - even after alignment
Created by Paul1977, last reply by blakamin on 26-Sep-2017 21:47 (48 replies)
Pages... 2 3 4


Auckland Airport fuel supply obliterated by digger
Created by Batman, last reply by scottjpalmer on 26-Sep-2017 22:10 (229 replies)
Pages... 14 15 16


Driving an automatic - do you use one foot or both?
Created by geekIT, last reply by khull on 26-Sep-2017 20:58 (144 replies)
Pages... 8 9 10


Fire Brigade Access To Property
Created by Geektastic, last reply by Pumpedd on 26-Sep-2017 21:54 (19 replies)
Pages... 2


Electrical standards question
Created by delroynitz, last reply by sparkz25 on 26-Sep-2017 20:43 (16 replies)
Pages... 2


Could a production electric car reach 500 KPH anytime soon?
Created by kingdragonfly, last reply by kotuku4 on 26-Sep-2017 16:32 (27 replies)
Pages... 2


vodafone shutting down email?
Created by FatFurryGuy, last reply by Rickles on 26-Sep-2017 15:31 (301 replies)
Pages... 19 20 21