参数资料
型号: LFE3-35EA-6FN484C
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
中文描述: FPGA, PBGA484
封装: 23 X 23 MM, LEAD FREE, FPBGA-484
文件页数: 117/130页
文件大小: 2667K
代理商: LFE3-35EA-6FN484C
3-35
DC and Switching Characteristics
Lattice Semiconductor
LatticeECP3 Family Data Sheet
SERDES High-Speed Data Transmitter
1
Table 3-6. Serial Output Timing and Levels
Table 3-7. Channel Output Jitter
Symbol
Description
Frequency
Min.
Typ.
Max.
Units
VTX-DIFF-P-P-1.44 Differential swing (1.44V setting)
1, 2
0.25 to 3.125 Gbps
1150
1440
1730
mV, p-p
VTX-DIFF-P-P-1.35 Differential swing (1.35V setting)
1, 2
0.25 to 3.125 Gbps
1080
1350
1620
mV, p-p
VTX-DIFF-P-P-1.26 Differential swing (1.26V setting)
1, 2
0.25 to 3.125 Gbps
1000
1260
1510
mV, p-p
VTX-DIFF-P-P-1.13 Differential swing (1.13V setting)
1, 2
0.25 to 3.125 Gbps
840
1130
1420
mV, p-p
VTX-DIFF-P-P-1.04 Differential swing (1.04V setting)
1, 2
0.25 to 3.125 Gbps
780
1040
1300
mV, p-p
VTX-DIFF-P-P-0.92 Differential swing (0.92V setting)
1, 2
0.25 to 3.125 Gbps
690
920
1150
mV, p-p
VTX-DIFF-P-P-0.87 Differential swing (0.87V setting)
1, 2
0.25 to 3.125 Gbps
650
870
1090
mV, p-p
VTX-DIFF-P-P-0.78 Differential swing (0.78V setting)
1, 2
0.25 to 3.125 Gbps
585
780
975
mV, p-p
VTX-DIFF-P-P-0.64 Differential swing (0.64V setting)
1, 2
0.25 to 3.125 Gbps
480
640
800
mV, p-p
VOCM
Output common mode voltage
VCCOB
-0.75
VCCOB
-0.60
VCCOB
-0.45
V
TTX-R
Rise time (20% to 80%)
145
185
265
ps
TTX-F
Fall time (80% to 20%)
145
185
265
ps
ZTX-OI-SE
Output Impedance 50/75/HiZ Ohms
(single ended)
—-20%
50/75/
Hi Z
+20%
Ohms
RLTX-RL
Return loss (with package)
10
dB
TTX-INTRASKEW
Lane-to-lane TX skew within a
SERDES quad block (intra-quad)
200
ps
TTX-INTERSKEW
3
Lane-to-lane skew between SERDES
quad blocks (inter-quad)
1UI +200
ps
1. All measurements are with 50 ohm impedance.
2. See TN1176, LatticeECP3 SERDES/PCS Usage Guide for actual binary settings and the min-max range.
3. Inter-quad skew is between all SERDES channels on the device and requires the use of a low skew internal reference clock.
Description
Frequency
Min.
Typ.
Max.
Units
Deterministic
3.125 Gbps
0.17
UI, p-p
Random
3.125 Gbps
0.25
UI, p-p
Total
3.125 Gbps
0.35
UI, p-p
Deterministic
2.5Gbps
0.17
UI, p-p
Random
2.5Gbps
0.20
UI, p-p
Total
2.5Gbps
0.35
UI, p-p
Deterministic
1.25 Gbps
0.10
UI, p-p
Random
1.25 Gbps
0.22
UI, p-p
Total
1.25 Gbps
0.24
UI, p-p
Deterministic
622 Mbps
0.10
UI, p-p
Random
622 Mbps
0.20
UI, p-p
Total
622 Mbps
0.24
UI, p-p
Deterministic
250 Mbps
0.10
UI, p-p
Random
250 Mbps
0.18
UI, p-p
Total
250 Mbps
0.24
UI, p-p
Note: Values are measured with PRBS 2
7-1, all channels operating, FPGA logic active, I/Os around SERDES pins quiet,
reference clock @ 10X mode.
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