IPTR-C2H-NIOS Altera, IPTR-C2H-NIOS Datasheet - Page 79
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IPTR-C2H-NIOS
Manufacturer Part Number
IPTR-C2H-NIOS
Description
IP CORE Renewal Of IPT-C2H-NIOS
Manufacturer
Altera
Datasheet
1.IPT-C2H-NIOS.pdf
(138 pages)
Specifications of IPTR-C2H-NIOS
Software Application
IP CORE, NIOS Processor And Functions
Core Architecture
Nios II
Features
ANSI C Compliance, Straightforward C-to-Hardware Mapping, Reporting Of Generated Results
Core Sub-architecture
Cyclone
Rohs Compliant
NA
Lead Free Status / RoHS Status
na
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Figure 3–18. Early Scheduling of Read Operation with Latency
Altera Corporation
November 2009
The C2H Compiler optimizes the dependency graph for this function by
moving the read operation for ptr_in up to state 0. This optimization
allows the calculation of xy and xy_plus_z to occur during the two
cycles of latency required to fetch data for ptr_in.
Stalling
A state machine stalls when data needed for an operation is not available.
A state machine might stall while waiting for one or more of the following
actions to complete:
■
■
■
The state machine does not proceed until all reasons for stalling are
resolved.
Inner Loops
Each loop is implemented as a state machine, and an inner loop translates
to a particular state within the state machine for its containing function or
outer loop. In other words, an inner loop translates to a state machine
within a state machine. As the state machine for an inner loop executes,
the outer state machine stalls until the inner loop has completed.
Inner loop
Subfunction call
Memory transfer
9.1
C-to-Hardware Mapping Reference
Nios II C2H Compiler User Guide
3–39
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