Designing SOCs with Configured Cores

4.9. TIE Queue Interfaces

The highest-bandwidth mechanism for task-to-task communication is hardware implementation of data queues. One data queue can sustain data rates as high as one transfer every cycle or more than 10 Gbytes per second for wide operands (tens of bytes per operand at a clock rate of hundreds of MHz) because queue widths need not be tied to a processor’s bus width or general-register width. The handshake between producer and consumer is implicit in the queue interfaces.

Figure 4.5. Processors linked by a FIFO queue.

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When the data producer has created data, it pushes that data into the tail of the queue, ...