PCI-104
PCI Interface
Picolo U4 H.264 PCI-104 is a PCI-104 compliant device.It conforms to all non-optional aspects of the PCI-104 Specification, including both mechanical and electrical specifications.
PCI Signaling Voltage
Picolo U4 H.264 PCI-104 is a universal PCI-104 add-in module. A universal add-in module can be used on both 3.3V or 5V I/O signaling buses.
Picolo U4 H.264 PCI-104 uses the VI/O signal to determine its signaling level.
The PCI host board drives the VI/O pins according to the desired PCI signaling level. If VI/O is set to 3.3V, then the system will use 3.3V I/O signaling. Likewise, if VI/O is set to 5V, then the system will use 5V I/O signaling.
PCI Bus Size
Picolo U4 H.264 PCI-104 is a 32-bit PCI device.
PCI Bus Clock
Picolo U4 H.264 PCI-104 embeds a PCI bridge that operates on both 33 MHz and 66 MHz bus clock frequencies.
Notes
- Operating a PCI-104 bus at 66 MHz is not reliable when additional add-on module is plugged on the PCI-104 stack. Consequently, if a PCI-104 stack contains more than one add-on PCI-104 module, it is mandatory to configure the PCI bus controller, usually hosted by the CPU board, for 33 MHz operation.
- For reliable operation, the clock driver of the bus controller must deliver a PCI-compliant PCI clock signal to all the PCI-104 modules.