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FireWire
1394b bandwidths
According to the 1394b specification on isochronous transfer, the largest
data payload size of 8192 bytes per 125 µs cycle is possible with a bandwidth
of 800 Mbit/s.
For further details read Chapter
on page 226.
Requirements for PC and 1394b
One PIKE camera connected to a PC's 1394b bus saturates the standard PCI
bus.
1394b also requires low latency for data transmission (due to small receive-
FIFO). In order to get the most out of your camera-to-PC configuration, we
recommend the following chipsets for your PC:
•
For Intel-based desktops, chipset 945 (or higher)
•
For non-Intel based desktops (e.g. AMD), PCI Express compatible
chipset
www
For more information:
http://support.intel.com/support/chipsets/#desktop
For multi-camera applications one of the following bus cards is needed:
•
PCI ExpressCard with potential 250 MByte/s per lane (up to four sup-
ported by chipset) or
•
64-bit PCI-X card (160 MByte/s)
How does bandwidth affect the frame rate?
PIKE Technical Manual V4.1.0
32
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