EP4SGX360KF40C4N Datasheet, PDF (42/82 Pages) Altera Corporation – Device Datasheet and Addendum for Stratix IV Devices

Chapter 1: DC and Switching Characteristics for Stratix IV Devices
Switching Characteristics
1–34
Table 1–25 through Table 1–28 lists the typical differential V_OD termination settings for
Stratix IV GX and GT devices.
Table 1–25. Typical V_OD Setting, TX Term = 85 
Symbol
V_OD Setting (mV)
0
1
2
3
4
5
V_OD differential
170 ± 340 ± 510 ± 595 ± 680 ± 765 ±
peak-to-peak Typical (mV) 20% 20% 20% 20% 20% 20%
6
7
850 ± 1020 ±
20% 20%
Table 1–26. Typical V_OD Setting, TX Term = 100 
Symbol
V_OD Setting (mV)
0
1
2
3
4
5
6
7
V_OD differential
200 ± 400 ± 600 ± 700 ± 800 ± 900 ± 1000 1200
peak-to-peak Typical (mV) 20% 20% 20% 20% 20% 20% ± 20% ± 20%
Table 1–27. Typical V_OD Setting, TX Term = 120 
Symbol
V_OD Setting (mV)
0
1
2
3
4
V_OD differential
240 ± 480 ± 720 ± 840 ± 960 ±
peak-to-peak Typical (mV) 20% 20% 20% 20% 20%
5
1080 ±
20%
6
1200 ±
20%
Table 1–28. Typical V_OD Setting, TX Term = 150 
Symbol
V_OD differential
peak-to-peak Typical (mV)
0
300 ±
20%
1
600 ±
20%
V_OD Setting (mV)
2
3
900 ±
20%
1050 ±
20%
4
1200 ±
20%
5
1350 ±
20%
Table 1–29 lists typical transmitter pre-emphasis levels in dB for the first post tap
under the following conditions (low-frequency data pattern [five 1s and five 0s] at
6.25 Gbps). The levels listed in Table 1–29 are a representation of possible
pre-emphasis levels under the specified conditions only and that the pre-emphasis
levels may change with data pattern and data rate.
f To predict the pre-emphasis level for your specific data rate and pattern, run
simulations using the Stratix IV HSSI HSPICE models.
Table 1–29. Transmitter Pre-Emphasis Levels for Stratix IV Devices (Part 1 of 2)
Pre-Emphasis 1st
V_OD Setting
Post-Tap Setting
0
1
2
3
4
5
6
7
0
0
0
0
0
0
0
0
0
1
N/A
0.7
0
0
0
0
0
0
2
N/A
1
0.3
0
0
0
0
0
3
N/A
1.5
0.6
0
0
0
0
0
January 2014 Altera Corporation
Stratix IV Device Handbook
Volume 4: Device Datasheet and Addendum