top.syr

FPGA向SRAM中写入数据

Release 6.2i - xst G.28
Copyright (c) 1995-2004 Xilinx, Inc.  All rights reserved.
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--> Parameter xsthdpdir set to ./xst
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--> Reading design: top.prj

TABLE OF CONTENTS
  1) Synthesis Options Summary
  2) HDL Compilation
  3) HDL Analysis
  4) HDL Synthesis
  5) Advanced HDL Synthesis
     5.1) HDL Synthesis Report
  6) Low Level Synthesis
  7) Final Report
     7.1) Device utilization summary
     7.2) TIMING REPORT


=========================================================================
*                      Synthesis Options Summary                        *
=========================================================================
---- Source Parameters
Input File Name                    : top.prj
Input Format                       : mixed
Ignore Synthesis Constraint File   : NO
Verilog Include Directory          : 

---- Target Parameters
Output File Name                   : top
Output Format                      : NGC
Target Device                      : xc3s400-4-pq208

---- Source Options
Top Module Name                    : top
Automatic FSM Extraction           : YES
FSM Encoding Algorithm             : Auto
FSM Style                          : lut
RAM Extraction                     : Yes
RAM Style                          : Auto
ROM Extraction                     : Yes
ROM Style                          : Auto
Mux Extraction                     : YES
Mux Style                          : Auto
Decoder Extraction                 : YES
Priority Encoder Extraction        : YES
Shift Register Extraction          : YES
Logical Shifter Extraction         : YES
XOR Collapsing                     : YES
Resource Sharing                   : YES
Multiplier Style                   : auto
Automatic Register Balancing       : No

---- Target Options
Add IO Buffers                     : YES
Global Maximum Fanout              : 500
Add Generic Clock Buffer(BUFG)     : 8
Register Duplication               : YES
Equivalent register Removal        : YES
Slice Packing                      : YES
Pack IO Registers into IOBs        : auto

---- General Options
Optimization Goal                  : Speed
Optimization Effort                : 1
Keep Hierarchy                     : NO
Global Optimization                : AllClockNets
RTL Output                         : Yes
Write Timing Constraints           : NO
Hierarchy Separator                : _
Bus Delimiter                      : <>
Case Specifier                     : maintain
Slice Utilization Ratio            : 100
Slice Utilization Ratio Delta      : 5

---- Other Options
lso                                : top.lso
Read Cores                         : YES
cross_clock_analysis               : NO
verilog2001                        : YES
Optimize Instantiated Primitives   : NO

=========================================================================


=========================================================================
*                          HDL Compilation                              *
=========================================================================
Compiling vhdl file E:/lqj/SRAM+FPGA+USB/FPGA将数据存入RAM/FPGA/top.vhdl in Library work.
Entity <top> (Architecture <behavioral>) compiled.

=========================================================================
*                            HDL Analysis                               *
=========================================================================
Analyzing Entity <top> (Architecture <behavioral>).
INFO:Xst:1304 - Contents of register <OE_SRAM> in unit <top> never changes during circuit operation. The register is replaced by logic.
INFO:Xst:1304 - Contents of register <CE_SRAM> in unit <top> never changes during circuit operation. The register is replaced by logic.
INFO:Xst:1304 - Contents of register <UB_SRAM> in unit <top> never changes during circuit operation. The register is replaced by logic.
Entity <top> analyzed. Unit <top> generated.


=========================================================================
*                           HDL Synthesis                               *
=========================================================================

Synthesizing Unit <top>.
    Related source file is E:/lqj/SRAM+FPGA+USB/FPGA将数据存入RAM/FPGA/top.vhdl.
    Register <led> equivalent to <is_end> has been removed
    Register <WE_SRAM> equivalent to <LB_SRAM> has been removed
    Found finite state machine <FSM_0> for signal <state>.
    -----------------------------------------------------------------------
    | States             | 3                                              |
    | Transitions        | 3                                              |
    | Inputs             | 0                                              |
    | Outputs            | 3                                              |
    | Clock              | clk_SRAM (rising_edge)                         |
    | Clock enable       | is_end (negative)                              |
    | Reset              | reset (positive)                               |
    | Reset type         | synchronous                                    |
    | Reset State        | 001                                            |
    | Power Up State     | 001                                            |
    | Encoding           | automatic                                      |
    | Implementation     | LUT                                            |
    -----------------------------------------------------------------------
    Found 16-bit register for signal <addr_SRAM>.
    Found 8-bit register for signal <data_SRAM>.
    Found 1-bit register for signal <LB_SRAM>.
    Found 16-bit adder for signal <$n0011> created at line 80.
    Found 8-bit adder for signal <$n0013> created at line 81.
    Found 11-bit up counter for signal <count>.
    Found 8-bit register for signal <data_in>.
    Found 1-bit register for signal <is_end>.
    Found 16-bit register for signal <temp_addr_SRAM>.
    Summary:
	inferred   1 Finite State Machine(s).
	inferred   1 Counter(s).
	inferred  50 D-type flip-flop(s).
	inferred   2 Adder/Subtracter(s).
Unit <top> synthesized.


=========================================================================
*                       Advanced HDL Synthesis                          *
=========================================================================

Advanced RAM inference ...
Advanced multiplier inference ...
Selecting encoding for FSM_0 ...
Optimizing FSM <FSM_0> on signal <state> with one-hot encoding.
Dynamic shift register inference ...

=========================================================================
HDL Synthesis Report

Macro Statistics
# FSMs                             : 1
# Adders/Subtractors               : 2
 8-bit adder                       : 1
 16-bit adder                      : 1
# Counters                         : 1
 11-bit up counter                 : 1
# Registers                        : 9
 8-bit register                    : 2
 16-bit register                   : 2
 1-bit register                    : 5

=========================================================================

=========================================================================
*                         Low Level Synthesis                           *
=========================================================================

Optimizing unit <top> ...
Loading device for application Xst from file '3s400.nph' in environment D:/install/Xilinx.

Mapping all equations...
Building and optimizing final netlist ...
Found area constraint ratio of 100 (+ 5) on block top, actual ratio is 1.
FlipFlop state_FFd3 has been replicated 1 time(s)
FlipFlop state_FFd1 has been replicated 1 time(s)
FlipFlop count_10 has been replicated 1 time(s)

=========================================================================
*                            Final Report                               *
=========================================================================
Final Results
RTL Top Level Output File Name     : top.ngr
Top Level Output File Name         : top
Output Format                      : NGC
Optimization Goal                  : Speed
Keep Hierarchy                     : NO

Design Statistics
# IOs                              : 32

Macro Statistics :
# Registers                        : 7
#      1-bit register              : 2
#      11-bit register             : 1
#      16-bit register             : 2
#      8-bit register              : 2
# Adders/Subtractors               : 3
#      11-bit adder                : 1
#      16-bit adder                : 1
#      8-bit adder                 : 1