please dont rip this site

Since modes have been defined that allow the peripheral to send 8 bits of data back to the host over the data lines, it is possible for both the host and the peripheral to be driving the data lines at the same time. This can result in damage to the host port or the peripheral port or both. This would be very, very rare in normal operation but the following possiblilitys arise:

  1. Since the host will always tri-state the data lines prior to asserting the signal telling the Peripheral that it is allowed to drive them, Host lockup should never result in a crash. Since each of the modes requires that the Peripheral signal
  2. Hopefully the Peripheral will only actually drive the data bus during the short period of time required to reverse strobe the data into the PC. If the pc does not reverse ack the data due to lockup, a return to a forward mode that the peripheral did not see or other failure, the bus will not be driven by the Peripheral again.

See also:


file: /Techref/io/parallel/datacrsh.htm, 1KB, , updated: 2006/6/27 13:18, local time: 2024/3/29 05:02,
TOP NEW HELP FIND: 
18.212.242.203:LOG IN

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.sxlist.com/Techref/io/parallel/datacrsh.htm"> io parallel datacrsh</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

 

Welcome to sxlist.com!


Site supported by
sales, advertizing,
& kind contributors
just like you!

Please don't rip/copy
(here's why

Copies of the site on CD
are available at minimal cost.
 

Welcome to www.sxlist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .