Release 7.1i Map H.38 Xilinx Mapping Report File for Design 'top' Design Information ------------------ Command Line : C:/Xilinx/bin/nt/map.exe -ise d:\parttime\for
book\例子\典型实例3.12 ps2接口控制\project\project.ise -intstyle ise -p
xc3s400-pq208-4 -cm area -pr b -k 4 -c 100 -o top_map.ncd top.ngd top.pcf Target Device : xc3s400 Target Package : pq208 Target Speed : -4 Mapper Version : spartan3 -- $Revision: 1.26.6.3 $ Mapped Date : Thu May 29 23:58:44 2008 Design Summary -------------- Number of errors: 0 Number of warnings: 3 Logic Utilization: Total Number Slice Registers: 147 out of 7,168 2% Number used as Flip Flops: 140 Number used as Latches: 7 Number of 4 input LUTs: 301 out of 7,168 4% Logic Distribution: Number of occupied Slices: 232 out of 3,584 6% Number of Slices containing only related logic: 232 out of 232 100% Number of Slices containing unrelated logic: 0 out of 232 0% *See NOTES below for an explanation of the effects of unrelated logic Total Number 4 input LUTs: 346 out of 7,168 4% Number used as logic: 301 Number used as a route-thru: 45 Number of bonded IOBs: 23 out of 141 16% IOB Flip Flops: 2 Number of GCLKs: 4 out of 8 50% Total equivalent gate count for design: 3,283 Additional JTAG gate count for IOBs: 1,104 Peak Memory Usage: 111 MB NOTES: Related logic is defined as being logic that shares connectivity - e.g. two LUTs are "related" if they share common inputs. When assembling slices, Map gives priority to combine logic that is related. Doing so results in the best timing performance. Unrelated logic shares no connectivity. Map will only begin packing unrelated logic into a slice once 99% of the slices are occupied through related logic packing. Note that once logic distribution reaches the 99% level through related logic packing, this does not mean the device is completely utilized. Unrelated logic packing will then begin, continuing until all usable LUTs and FFs are occupied. Depending on your timing budget, increased levels of unrelated logic packing may adversely affect the overall timing performance of your design. Table of Contents ----------------- Section 1 - Errors Section 2 - Warnings Section 3 - Informational Section 4 - Removed Logic Summary Section 5 - Removed Logic Section 6 - IOB Properties Section 7 - RPMs Section 8 - Guide Report Section 9 - Area Group Summary Section 10 - Modular Design Summary Section 11 - Timing Report Section 12 - Configuration String Information Section 13 - Additional Device Resource Counts Section 1 - Errors ------------------ Section 2 - Warnings -------------------- WARNING:LIT:176 - Clock buffer is designated to drive clock loads. BUFGMUX
symbol "physical_group_XLXI_3/clk_int/XLXI_3/clk_int_BUFG" (output
signal=XLXI_3/clk_int) has a mix of clock and non-clock loads. The non-clock
loads are: Pin D of XLXI_3/clk_int WARNING:LIT:175 - Clock buffer is designated to drive clock loads. BUFGMUX
symbol "physical_group_XLXI_4/rx_released/XLXI_4/rx_released_BUFG" (output
signal=XLXI_4/rx_released) has a mix of clock and non-clock loads. Some of
the non-clock loads are (maximum of 5 listed): Pin CLR of XLXI_3/state_FFd5 Pin I0 of XLXI_3/_n00161 Pin CLR of XLXI_3/clkdiv Pin CLR of XLXI_3/clk_int Pin CLR of XLXI_3/lcd_e WARNING:PhysDesignRules:372 - Gated clock. Clock net XLXI_3/tc_clkcnt is sourced
by a combinatorial pin. This is not good design practice. Use the CE pin to
control the loading of data into the flip-flop. Section 3 - Informational ------------------------- INFO:MapLib:562 - No environment variables are currently set. INFO:MapLib:535 - The following Virtex BUFG(s) is/are being retargetted to
Virtex2 BUFGMUX(s) with input tied to I0 and Select pin tied to constant 0: BUFG symbol "XLXI_1/clk_BUFG" (output signal=XLXI_1/clk), BUFG symbol "XLXI_3/clk_int_BUFG" (output signal=XLXI_3/clk_int), BUFG symbol "XLXI_4/rx_released_BUFG" (output signal=XLXI_4/rx_released), BUFGP symbol "clk_BUFGP" (output signal=clk_BUFGP) INFO:LIT:244 - All of the single ended outputs in this design are using slew
rate limited output drivers. The delay on speed critical single ended outputs
can be dramatically reduced by designating them as fast outputs in the
schematic. Section 4 - Removed Logic Summary --------------------------------- 2 block(s) optimized away Section 5 - Removed Logic ------------------------- Optimized Block(s): TYPE BLOCK GND XST_GND VCC XST_VCC To enable printing of redundant blocks removed and signals merged, set the
detailed map report option and rerun map. Section 6 - IOB Properties -------------------------- +------------------------------------------------------------------------------------------------------------------------+ | IOB Name | Type | Direction | IO Standard | Drive | Slew | Reg (s) | Resistor | IOB | | | | | | Strength | Rate | | | Delay | +------------------------------------------------------------------------------------------------------------------------+ | clk | IOB | INPUT | LVCMOS25 | | | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | data | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | lcd_e | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | lcd_rs | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | lcd_rw | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | led | IOB | OUTPUT | LVCMOS25 | 12 | SLOW | | | | | ps2ck | IOB | BIDIR | LVCMOS25 | 12 | SLOW | INFF1 | | IFD | | ps2dk | IOB | BIDIR | LVCMOS25 | 12 | SLOW | INFF1 | | IFD | | rst | IOB | INPUT | LVCMOS25 | | | | | | +------------------------------------------------------------------------------------------------------------------------+ Section 7 - RPMs ---------------- Section 8 - Guide Report ------------------------ Guide not run on this design. Section 9 - Area Group Summary ------------------------------ No area groups were found in this design. Section 10 - Modular Design Summary ----------------------------------- Modular Design not used for this design. Section 11 - Timing Report -------------------------- This design was not run using timing mode. Section 12 - Configuration String Details -------------------------- Use the "-detail" map option to print out Configuration Strings Section 13 - Additional Device Resource Counts ---------------------------------------------- Number of JTAG Gates for IOBs = 23 Number of Equivalent Gates for Design = 3,283 Number of RPM Macros = 0 Number of Hard Macros = 0 DCIRESETs = 0 CAPTUREs = 0 BSCANs = 0 STARTUPs = 0 DCMs = 0 GCLKs = 4 ICAPs = 0 18X18 Multipliers = 0 Block RAMs = 0 Total Registers (Flops & Latches in Slices & IOBs) not driven by LUTs = 99 IOB Dual-Rate Flops not driven by LUTs = 0 IOB Dual-Rate Flops = 0 IOB Slave Pads = 0 IOB Master Pads = 0 IOB Latches not driven by LUTs = 0 IOB Latches = 0 IOB Flip Flops not driven by LUTs = 2 IOB Flip Flops = 2 Unbonded IOBs = 0 Bonded IOBs = 23 XORs = 45 CARRY_INITs = 26 CARRY_SKIPs = 0 CARRY_MUXes = 45 Shift Registers = 0 Static Shift Registers = 0 Dynamic Shift Registers = 0 16x1 ROMs = 0 16x1 RAMs = 0 32x1 RAMs = 0 Dual Port RAMs = 0 MUXFs = 6 MULT_ANDs = 0 4 input LUTs used as Route-Thrus = 45 4 input LUTs = 301 Slice Latches not driven by LUTs = 7 Slice Latches = 7 Slice Flip Flops not driven by LUTs = 90 Slice Flip Flops = 140 SliceMs = 0 SliceLs = 232 Slices = 232 F6 Muxes = 0 F5 Muxes = 6 F8 Muxes = 0 F7 Muxes = 0 Number of LUT signals with 4 loads = 4 Number of LUT signals with 3 loads = 6 Number of LUT signals with 2 loads = 33 Number of LUT signals with 1 load = 242 NGM Average fanout of LUT = 1.79 NGM Maximum fanout of LUT = 44 NGM Average fanin for LUT = 3.5349 Number of LUT symbols = 301
