摘要:
An apparatus and method which provide increased data flow through a compute platform by optimizing data flow between an external device and the internal circuitry without the need for user intervention. A port router is provided which includes a controller switch, a port switch, and one or more connections between the controller switch and the port switch. The controller switch, the port switch and the one or more connections are adapted to provide dynamic re-routing of connections between the port switch inputs and the controller switch outputs. A method is also provided for dynamically routing ports to internal circuitry of a compute platform. The method includes providing a configurable switching circuit, querying the configurable switching circuit to determine a default topology, computing an optimized topology upon the occurrence of a change of the data flow through the configurable switching circuit, suspending operation and effecting re-routing between the interface ports and the internal circuitry based on the optimized topology, and resuming IO operations through the configurable switching circuit. The method and apparatus may be applied to personal computer systems, information appliances, set-top boxes, cable modems, game consoles, smart appliances, handheld computers, palm-sized computers, embedded control systems, workstations, servers and the like.
摘要:
A digit reversing system is disclosed for handling mixed radix FFT operations with arbitrary arrangements of radices. In a first step, all bits in an integer field of size log.sub.2 N are position reversed. In a second step, subfields of the output produced in the first step are individually unreversed at the local level to produce unreversed digits. The output is used for appropriately arranging input terms applied to a mixed-radix multi-stage Fast Fourier Transform (FFT) process.
摘要:
An IO controller device and method for controlling data flow, the method including determining a desired configuration for the IO controller, reprogramming the IO controller to allow for processing of one or more descriptor lists, modifying the configuration of the IO controller to reflect the addition or deletion of one or more virtual controllers, re-enumerating the IO controller, and processing a descriptor list for each of the IO controller and the one or more virtual controllers. The integrated circuit device for use as an IO controller includes a system bus interface, a programmable list processor and a port router. The integrated circuit device is adapted for reconfiguration to add or delete one or more virtual controllers. The virtual controllers provide substantially the full bandwidth supported by the integrated circuit device. The IO controller device and apparatus may be applied to personal computer systems, information appliances, set-top boxes, cable modems, game consoles, smart appliances, handheld computers, palm-sized computers, embedded control systems, workstations, servers and the like.
摘要:
A control apparatus for use with a digital signal processing device and associated memory units is described. The control apparatus determines, along with the electrical configuration of the digital signal processing device and associated memory units, the application of members of a signal array to be processed and the removal of the members of a processed signal array from the digital signal processing device. The control apparatus controls the location of data exchanged between the digital signal processing device and the associated memory units. The control apparatus permits the digital signal processing device and associated memory units to operate in a normal mode where a predetermined processing operation is performed on the members of a signal array, a recursive mode where a series of operations are performed on a signal array by a single digital signal processing unit, and a sequential mode where a series of processing operations are performed on a signal array using a by plurality of digital signal processing units coupled in a series arrangement. The control apparatus has provision for automatic accommodation of predetermined latency in the signal member path, resulting from pipelined computation and from pipelined memory accesses, as well as accommodating preselected signal array sizes and preselected signal array overlap.