IPT-C2H-NIOS Altera, IPT-C2H-NIOS Datasheet - Page 82
IPT-C2H-NIOS
Manufacturer Part Number
IPT-C2H-NIOS
Description
C2H COMPILER FOR NIOS II
Manufacturer
Altera
Series
Nios®IIr
Type
Nios IIr
Datasheet
1.IPT-C2H-NIOS.pdf
(138 pages)
Specifications of IPT-C2H-NIOS
Function
C to Hardware Compiler
License
Initial License
Software Application
IP CORE, NIOS Processor And Functions
Core Architecture
FPGA
Core Sub-architecture
Cyclone
Rohs Compliant
NA
Lead Free Status / RoHS Status
Not applicable / Not applicable
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Scheduling
Example 3–35. Loop Block
int mac(int *data_array, int *coef_array, int len)
{
}
3–42
Nios II C2H Compiler User Guide
int sum = 0;
do
{
} while (i++ < len);
return sum;
int x = *data_array++;
int c = *coef_array++;
int prod = c * x;
sum += prod;
Memory Transfers
Avalon-MM system interconnect fabric manages arbitration between
multiple Avalon-MM master ports that access a single slave port. A
master port might have to wait several clock cycles before beginning a
transfer due to arbitration. If a master port on an accelerator is being
forced to wait, the state machine for the accelerator stalls until the transfer
can proceed.
Loop Pipelining
The C2H Compiler structures the state machine for a loop so that
iterations of the loop are pipelined. In other words, consecutive iterations
of the loop can begin before prior iterations have completed.
Pipelining Loop Iterations
Figure 3–20
Example
3–35.
shows the dependency graph for the loop block in
9.1
Altera Corporation
November 2009
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