LFXP2-30E-5FN484C Lattice, LFXP2-30E-5FN484C Datasheet - Page 220
![FPGA - Field Programmable Gate Array 30KLUTs 363 I/O Inst -on DSP 1.2V -5 Spd](/photos/16/15/161505/landingpagelatticexp2_sml.jpg)
LFXP2-30E-5FN484C
Manufacturer Part Number
LFXP2-30E-5FN484C
Description
FPGA - Field Programmable Gate Array 30KLUTs 363 I/O Inst -on DSP 1.2V -5 Spd
Manufacturer
Lattice
Specifications of LFXP2-30E-5FN484C
Number Of Macrocells
29000
Number Of Programmable I/os
363
Data Ram Size
396288
Supply Voltage (max)
1.26 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Supply Voltage (min)
1.14 V
Package / Case
FPBGA-484
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFXP2-30E-5FN484C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Figure 11-20. Software Primitive Implementation for Memory READ (Full Clock Transfer)
Read Timing Waveforms
Figures 11-21 and 11-22 show READ data transfer for half and full clock cycle data transfer based on the results of
the DQS Transition detector logic. This circuitry decides whether or not to invert the phase of FPGA system CLK to
the synchronization registers based on the relative phases of PRMBDET and CLK.
• Case 1: If the FPGA clock is low on the first PRMBDET transition, then DDRCLKPOL is low and no inversion is
• Case 2: If the FPGA clock is high on the first PRMBDET, then DDRCLKPOL is high and the FPGA clock (CLK)
Figure 11-21 illustrates the DDR data timing using half clock transfer mode at different stages of the IDDRMX1A
registers. The first stage of the register captures data on the positive edge as shown by signal A and the negative
edge as shown by signal B. Data stream A goes through an additional half clock cycle transfer shown by signal C.
Phase-aligned data streams B and C are presented to the next stage registers clocked by the FPGA clock.
Figure 11-22 illustrates the DDR data timing using full clock transfer mode at different stages of IDDRMFX1A regis-
ters. In addition to the first two register stages in the half clock mode, the full clock transfer mode has an additional
stage register clocked by the FPGA clock. In this case, D and E are the data streams after the second register
stage presented to the final stage of registers clocked by the FPGA clock.
dqs
dq
required.
needs to be inverted before it is used for synchronization.
uddcntl
reset
read
xclk
clk
ce
RST
UDDCNTL
DQSI
CLK
READ
XCLK
DQSBUFC
DQSDEL
DQSDEL
DQSDLL
6
DDRCLKPOL
DATAVALID
PRMBDET
DQSXFER
DQSO
DQSC
LOCK
11-16
LatticeXP2 High-Speed I/O Interface
ECLK
DDRCLKPOL
RST
CE
CLK1
CLK2
D
IDDRMFX1A
QA
QB
dqsc
prmbdet
dqsxfer
datavalid
lock
datain_p
datain_n
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