Geekzone: technology news, blogs, forums
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:

Gigabit cable now available
Created by sub, last reply by antoniosk on 21-Oct-2016 08:19 (39 replies)
Pages... 2 3

Sony XZ Owners discussion
Created by networkn, last reply by Geektastic on 20-Oct-2016 22:31 (48 replies)
Pages... 2 3 4

Incomprehensible Acer stupidity
Created by Rikkitic, last reply by gzt on 19-Oct-2016 22:33 (32 replies)
Pages... 2 3

screwing a gate post into concrete
Created by hattrick123, last reply by simon14 on 18-Oct-2016 14:05 (33 replies)
Pages... 2 3

Galaxy Note 7 Announcement and Owners' Thread
Created by eracode, last reply by julianz on 17-Oct-2016 12:20 (1188 replies)
Pages... 78 79 80

Who is this women? She is possibly the most famous women on the internet and nobody knows who she is.
Created by jimbob79, last reply by cynnicallemon on 20-Oct-2016 13:28 (14 replies)

'Unlimited National Traffic'
Created by MikeAqua, last reply by chevrolux on 20-Oct-2016 23:29 (13 replies)

Insane Noel Leeming pricing - $400 Micro SD card
Created by sidders80, last reply by joker97 on 20-Oct-2016 19:30 (27 replies)
Pages... 2