LFE2-12E-5FN256I LATTICE SEMICONDUCTOR, LFE2-12E-5FN256I Datasheet - Page 91
LFE2-12E-5FN256I
Manufacturer Part Number
LFE2-12E-5FN256I
Description
FPGA LatticeECP2 Family 12000 Cells 90nm (CMOS) Technology 1.2V 256-Pin FBGA
Manufacturer
LATTICE SEMICONDUCTOR
Datasheet
1.LFE2-12SE-6FN256C.pdf
(389 pages)
Specifications of LFE2-12E-5FN256I
Package
256FBGA
Family Name
LatticeECP2
Device Logic Units
12000
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
193
Ram Bits
226304
In System Programmability
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-12E-5FN256I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Table 3-9. Channel Output Jitter - x20 Mode
Table 3-10. SERDES/PCS Latency Breakdown (Parallel Clock Cycle)
Deterministic
Random
Total
Deterministic
Random
Total
Deterministic
Random
Total
Note: Values are measured with PRBS 2
x20 mode.
Transmit Data Latency
Receive Data Latency
1. PCS internal parallel clock. This clock rate is the same as rxfullclk.
2. FPGA Bridge latency varies by the upsample/downsample FIFO read/write. The numbers given are for the 8b10b interface. The
3. 1 = -245ps, 2 = 700ps
Description
depth of the downsample/upsample FIFO is 4. The earliest read can be done after the write clock cycle (one clock) in downsample
FIFO. The latest read will be done after the FIFO is full (4 + 1 = 5). For the 16b20b interface, the numbers are doubled: min. = 2, max.
= 10. This latency depends on the internal FIFO flag operation.
Item
R1
T4
T1
T2
T3
R2
R3
R4
R5
R6
3
3
FPGA Bridge Transmit
8b10b Encoder
SERDES Bridge Transmit
Serializer: 8-bit mode
Serializer: 10-bit mode
Deserializer: 8-bit mode
Deserializer: 10-bit mode
SERDES Bridge Receive
Word Alignment
8b10b Decoder
Clock Tolerance Compensation
FPGA Bridge Receive
3.125 Gbps
3.125 Gbps
3.125 Gbps
Frequency
1.25 Gbps
1.25 Gbps
1.25 Gbps
2.5 Gbps
2.5 Gbps
2.5 Gbps
Description
7
-1, all channels operating, FPGA Logic active, I/Os around SERDES pins quiet, reference clock at
2
2
Min.
—
—
—
—
—
—
—
—
—
Min.
3.1
—
—
—
—
—
—
—
—
1
7
1
3-39
Average
—
15
—
—
—
—
—
—
—
—
3
3
Typ.
0.08
0.27
0.35
0.09
0.23
0.29
0.05
0.16
0.20
DC and Switching Characteristics
LatticeECP2/M Family Data Sheet
Max.
—
—
—
—
—
—
—
—
23
5
4
5
15 +
18 +
10 +
12 +
Fixed
Max.
—
0.19
0.11
0.12
0.51
0.59
0.34
0.45
0.22
0.28
2
2
2
1
1
1
2
2
Bypass
—
—
—
—
1
1
0
1
1
1
1
1
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
Units
word clk
word clk
word clk
word clk
word clk
word clk
word clk
word clk
UI + ps
UI + ps
UI + ps
UI + ps
Units
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