August 2006
Intermediate to advanced
344 pages
9h 2m
English
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12.6. Input- and Output-Queue Interfaces
The Diamond 545CK DSP core has a 32-bit input-queue interface and a 32-bit output-queue interface. These queue interfaces respectively connect directly to the head or tail of a FIFO memory. Each queue interface has a pair of hardware handshaking wires that automatically sequence the flow of data between the attached FIFO memory and the processor. The input-queue handshake signals are called PopReq (Pop Request) and Empty. The output-queue handshake signals are called PushReq (Push Request) and Full.
Table 12.6 lists the instructions added to the Diamond 545CK DSP core to manage the input- and output-queue interfaces. These instructions can appear in each of the three operation slots in the core’s 64-bit ...
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