LFXP15C-4FN256I Lattice, LFXP15C-4FN256I Datasheet - Page 361
LFXP15C-4FN256I
Manufacturer Part Number
LFXP15C-4FN256I
Description
IC FPGA 15.5KLUTS 188I/O 256-BGA
Manufacturer
Lattice
Datasheet
1.LFXP3C-3T100C.pdf
(397 pages)
Specifications of LFXP15C-4FN256I
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFXP15C-4FN256I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
- Current page: 361 of 397
- Download datasheet (10Mb)
June 2004
Introduction
This document describes how to meet board timing requirements for DDR signals. The Lattice DDR SDRAM Con-
troller IP core, non-pipelined version (DDR-NP) is used as an example.
Figure 18-1 describes the timing diagram for the DDR signals. A total of five clocks are used in the DDR board
design using the Lattice DDR IP core. The following is the clock description:
clk:
ddr_clk:
ddr_clk_n:
pll_mclk (clkx):
pll_nclk (clk2x): A 266MHz clock for DDR NP, used inside the FPGA only.
Figure 18-1. DDR Signal Timing Diagram
www.latticesemi.com
CLK
CLKIN
CLKFB
Input clock for PLL (max. frequency of 133MHz for DDR NP)
Output clock going to DDR (max. frequency of 133MHz for DDR NP)
Negated version of ddr_clk
Same as ddr_clk, used inside the FPGA only.
PLL
CLK2X
CLKX
t
FPGA_CLK
pll_nclk
pll_mclk
t
CDQ
t
DDR_CLK
t
t
CCTRL
CDQS
Board Timing Guidelines for the
DDR SDRAM Controller IP Core
clk2x tree
FPGA
18-1
clkx tree
FPGA
ddr_dq_in
(read flops)
ddr_dq_out
(write flops)
D
D
Q
D
D
Q
Q
Q
D
Q
t
ENB
PD
ddr_dq
ddr_ad &
command signals
ddr_clk
ddr_clk_n
dqs_out
t
BDCTRL
t
BDC
t
t
BDDS
BDD
Technical Note TN1071
MEMORY
DDR
tn1071_01.0
Related parts for LFXP15C-4FN256I
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
FPGA - Field Programmable Gate Array 15.4K LUTs 188 IO 1. 8/2.5/3.3V -4 Spd
Manufacturer:
Lattice
Part Number:
Description:
FPGA - Field Programmable Gate Array 15.4K LUTs 1.8/2.5/3 .3V -4 Spd I
Manufacturer:
Lattice
Part Number:
Description:
FPGA - Field Programmable Gate Array 15.4K LUTs 268 IO 1. 8/2.5/3.3V -4 Spd
Manufacturer:
Lattice
Part Number:
Description:
FPGA - Field Programmable Gate Array 15.4K LUTs 188 IO 1. 8/2.5/3.3V -4 Spd I
Manufacturer:
Lattice
Part Number:
Description:
FPGA - Field Programmable Gate Array 15.4K LUTs 268 IO 1. 8/2.5/3.3V -4 Spd I
Manufacturer:
Lattice
Part Number:
Description:
FPGA - Field Programmable Gate Array 15.4K LUTS 188 I/O
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
FPGA LatticeXP Family 15000 Cells 320MHz 130nm (CMOS) Technology 1.8V/2.5V/3.3V 256-Pin FBGA Tray
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
FPGA LatticeXP Family 15000 Cells 320MHz 130nm (CMOS) Technology 1.8V/2.5V/3.3V 388-Pin FBGA Tray
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
FPGA LatticeXP Family 15000 Cells 360MHz 130nm (CMOS) Technology 1.8V/2.5V/3.3V 256-Pin FBGA Tray
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
IC FPGA 15.5KLUTS 300I/O 484-BGA
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
IC FPGA 15.5KLUTS 188I/O 256-BGA
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
IC FPGA 15.5KLUTS 268I/O 388-BGA
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
IC FPGA 15.5KLUTS 300I/O 484-BGA
Manufacturer:
Lattice
Datasheet: