Resources Contact Us Home
FIFO device

Image Number 5 for United States Patent #7606941.

A receiving FIFO device can prevent a PCI bus from being occupied unnecessarily to enhance the performance of a whole system. An input control part checks in a third comparing part whether or not a received packet written in a memory part is an error packet on the basis of acknowledge information contained in a trailer part of the received packet. If the received packet is the error packet, the input control part supplies a signal EMPTY being HIGH to an output control device and cancels the received packet, thereby preventing the error packet from being transferred to a receiving DMA device. Furthermore, the input control part checks in a second comparing part whether or not the received packet written in the memory part belongs to a predetermined type of packet on the basis of tcode information contained in the first quadret of a header part of the received packet. Only if the received packet belongs to the predetermined type of packet, the input control part cancels the received packet for a predetermined type of error.

  Recently Added Patents
Drive and startup for a switched capacitor divider
Reduced plating ignitron
Tie down strap hook
Configurable pitch reducing optical fiber array
Camera system, video processing apparatus, and camera apparatus
Nanofibers containing latent reactive groups
Method for detecting directions of regularity in a two-dimensional image
  Randomly Featured Patents
Process for producing zinc phosphate
Integrated voice data terminal
Automatic imaging of documents
Camera having standard and panoramic focusing modes
System and method of correcting errors in SEM-measurements
Tool apparatus for synchronizing valve and ignition timing
Fitness beam
Guide assembly for a biopsy device
Deep trench based far subcollector reachthrough
Diesel engine dual path exhaust cleaner and burner system