I urgently need memory cycle timings for CompactFlash, which are defined in the PC Card specification (formerly PCMCIA). However, I'm having trouble ordering the 13 volume PC Card specification (nobody home at PCMCIA.org). If you have the specification, I would be most grateful if you could provide the common memory read and write waveform timings for 100ns, 150ns, 200ns and 250ns cycle times. It is the 'setup', 'command' and 'recovery' values that I need. E-Mail address is the reply address with 'nospam' removed. Many thanks Tim Clacy
Help please: PC Card Standard Release 8.0: Volume 2, Card Electrical
Started by ●June 16, 2004
Reply by ●June 16, 20042004-06-16
Tim,> I urgently need memory cycle timings for CompactFlash, which are defined in > the PC Card specification (formerly PCMCIA). However, I'm having trouble > ordering the 13 volume PC Card specification (nobody home at PCMCIA.org).Ok, dumb question but does www.compactflash.org not get you what you want? They have the spec available for free, I think that includes the cycle timings you're asking for. Jay.
Reply by ●June 17, 20042004-06-17
Jay wrote:> Tim, > >> I urgently need memory cycle timings for CompactFlash, which are >> defined in the PC Card specification (formerly PCMCIA). However, I'm >> having trouble ordering the 13 volume PC Card specification (nobody >> home at PCMCIA.org). > > Ok, dumb question but does www.compactflash.org not get you what you > want? They have the spec available for free, I think that includes the > cycle timings you're asking for. > > Jay.Jay, The CompactFlash specification is actually very small (125 pages); it makes lots of references to the 13 Volume, 6Kg PCMCIA specification. Common memory cycle timings are not described in the CompactFlash specification [see below]: CF+ and CompactFlash Specification Revision 2.0: ... The two timing sequences are detailed in the PCMCIA PC Card Standard. The CompactFlash Storage Card and CF+ Card conform to the timing in that reference document.
Reply by ●June 17, 20042004-06-17
Tim Clacy wrote:> Jay wrote: >> Tim, >> >>> I urgently need memory cycle timings for CompactFlash, which are >>> defined in the PC Card specification (formerly PCMCIA). However, I'm >>> having trouble ordering the 13 volume PC Card specification (nobody >>> home at PCMCIA.org). >> >> Ok, dumb question but does www.compactflash.org not get you what you >> want? They have the spec available for free, I think that includes >> the cycle timings you're asking for. >> >> Jay. > > Jay, > > The CompactFlash specification is actually very small (125 pages); it > makes lots of references to the 13 Volume, 6Kg PCMCIA specification. > Common memory cycle timings are not described in the CompactFlash > specification [see below]: > > > CF+ and CompactFlash Specification Revision 2.0: > > ... The two timing sequences are detailed in the PCMCIA PC Card > Standard. The CompactFlash Storage Card and CF+ Card conform to the > timing in that reference document....still nobody home at PCMCIA.org; perhaps they're busy looking for more forests to pulp; the specification seems to only be available in printed form :-(