Abstract: A system and method of interfacing two processors. The method can include generating a read/write request at a first processor for accessing a memory that is not directly accessible by the first processor, receiving the read/write request at a second processor that has direct access to the targeted memory, completing a read/write operation at the second processor; and receiving at the first processor an indication that the read/write operation has been completed.

Abstract: A system and method of controlling input and output in a multi-mode wireless processing system. The method can include receiving an instruction for communication in a multi-mode wireless processing system; and determining from a field in the received instruction whether a designated processing unit generates output data or receives input data.

Abstract: A system and method for obtaining processor diagnostic data. The method can include receiving a instruction, enabling write access of an output stream to a diagnostic memory, writing to the diagnostic memory at a first frequency, and reading from the diagnostic memory at a second frequency where the first frequency is greater than the second frequency.

Abstract: A method for switching between instruction contexts within a time interval in a multi-mode wireless broadband processing system. The method can include executing critical task operations that complete execution within a time interval, a critical task including a plurality of critical task operations, executing non-critical task operations that are able to cross a time interval boundary, a non-critical task including a plurality of non-critical task operations, and entering a sleep mode in which no critical task operations or non-critical task operations are executed, if the critical task operations and the non-critical task operations begun in the time interval have been completed before a following time interval begins.

Abstract: A method of dynamically controlling rate connections to sample buffers in a multi-mode processing system. The method can include receiving an instruction for communication in a multi-mode wireless processing system, and determining a rate at which a plurality of buffers are serially connected to elements external to the multi-mode wireless processing system for receipt or transmission of data.

Abstract: A system and method Fast Fourier Transform (FFT) method in a multi-mode wireless processing system. The method can include loading an input vector into an input buffer, initializing a second counter and a variable N, where N=log2 (input vector size), and s is the value of the second counter, performing an FFT stage, and comparing s to N and performing additional FFT stages until s=N. Performing the FFT stage can include performing vector operations on data in the input buffer and sending results to an output buffer, the data in the input buffer comprising a plurality of segments, advancing the value of the second counter; and switching roles of the input and output buffers. The vector operations can include performing Radix-4 FFT vector operations on the four input data at a time and multiplying the resulting output vectors with a Twiddle factor.

Abstract: A system and method for performing a convolution operation in a multi-mode wireless processing system. The method can include loading an initial value and a stride value into an address generator, generating an address based on the initial value and the stride value, supplying the generated address to a series of memories, loading input data into a series of registers, multiplying the contents of each register with a value stored at the generated address in the memory associated with each register, adding up the resulting multiplication products, and generating output based on the resulting sum. The number of memories and registers are equal, each register having an associated memory.