LFXP6C-3F256I Lattice, LFXP6C-3F256I Datasheet - Page 374
LFXP6C-3F256I
Manufacturer Part Number
LFXP6C-3F256I
Description
IC FPGA 5.8KLUTS 188I/O 256-BGA
Manufacturer
Lattice
Datasheet
1.LFXP3C-3T100C.pdf
(397 pages)
Specifications of LFXP6C-3F256I
Lead Free Status / Rohs Status
Contains lead / RoHS non-compliant
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Manufacturer
Quantity
Price
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Part Number:
LFXP6C-3F256I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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From the Set-up Report below, which was run for MAX conditions. The report shown here is for ddr_ad.
Find delays similarly for ddr_ras_n, ddr_cas_n, ddr_we_n, ddr_ba, ddr_cs_n and ddr_cke signals. Then take the
max of those delays as t
============================================================================================
Preference: CLOCK_TO_OUT PORT “ddr_ad_*” 5.500000 ns CLKNET “ddr_clk_c” ;
Passed:
ddr_clk_c -)
IN_DEL
ROUTE
MCLK_DEL
ROUTE
OUTREG_DEL
NCLK_DEL
ROUTE
Report:
Logical Details:
Constraint Details:
Physical Path Details:
Source:
Destination:
Data Path Delay:
Clock Path Delay:
Name
Name
Name
•
t
6.392ns delay clk to ddr_ad_6 less
3.271ns feedback compensation
1.713ns delay ddr_ad_6 to ddr_ad_6 (totaling 4.834ns) meets
5.500ns offset clk to ddr_ad_6 by 0.666ns
Clock path clk to ddr_ad_6:
Data path ddr_ad_6 to ddr_ad_6:
Feedback path:
CCTRL
The following path meets requirements by 0.666ns
Fanout
Fanout
Fanout
4.834ns is the minimum offset for this preference.
(max) =
12 items scored, 0 timing errors detected.
---
---
449
---
---
136
1
--------
--------
--------
(6.392-3.271)
Unknown
Cell type
Port
CCTRL
Delay (ns)
1.431
0.816
0.385
3.760
6.392
Delay (ns)
1.713
1.713
Delay (ns)
0.385
2.886
3.271
1.713ns
6.392ns
(max).
LLHPPLL.CLKIN to
LLHPPLL.CLKIN to
LLHPPLL.MCLK to
(28.4% logic, 71.6% route), 2 logic levels.
(100.0% logic, 0.0% route), 1 logic levels.
LLHPPLL.NCLK to
(11.8% logic, 88.2% route), 1 logic levels.
Q
+ 1.713 = 4.834 ns
Pin type
Pad
AB4.INCK to
(100.0% logic, 0.0% route), 1 logic levels.
(28.4% logic, 71.6% route), 2 logic levels.
AB4.PAD to
AE14.SC to
Site
Site
Site
18-14
U1_ddrct_np_o4_1_008/U1_cmdexe/ddr_adZ0Z_6
Cell name
ddr_ad_6
LLHPPLL.CLKIN clk_c
LLHPPLL.MCLK U2_ddr_pll_orca/ddr_pll_0_0
LLHPPLL.NCLK U2_ddr_pll_orca/ddr_pll_0_0
LLHPPLL.FB pll_nclk
AB4.INCK clk
AE14.PAD ddr_ad_6 (from ddr_clk_c)
AE14.SC ddr_clk_c
for the DDR SDRAM Controller IP Core
(clock net +/-)
Resource
Resource
Resource
Board Timing Guidelines
(from
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