Chapter 1: Device Datasheet for Arria II Devices
1–35
Switching Characteristics
December 2013
Altera Corporation
Table 1–37 lists the typical VOD for TX term that equals 100 . for Arria II GX and GZ devices.
Table 1–38 lists the 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
6.375 Gbps. The levels listed in
Table 1–38 are a representation of possible
pre-emphasis levels under these specified conditions only, the pre-emphasis levels
may change with data pattern and data rate.
To predict the pre-emphasis level for your specific data rate and pattern, run
simulations using the Arria II GX HSSI HSPICE models.
Table 1–37. Typical VOD Setting, TX Termination = 100 for Arria II Devices
Quartus II Setting
VOD Setting (mV)
1
400
2
600
3 (Arria II GZ)
700
4
800
5
900
6
1000
7
1200
Table 1–38. Transmitter Pre-Emphasis Levels for Arria II GX Devices
Arria II GX
(Quartus II
Software)
First Post Tap
Setting
Arria II GX (Quartus II Software) VOD Setting
124567
Unit
0 (off)
000000
—
1
0.7
00000
dB
2
2.7
1.2
0.3
0
dB
3
4.9
2.4
1.2
0.8
0.5
0.2
dB
4
7.5
3.8
2.1
1.6
1.2
0.6
dB
5
—
5.3
3.1
2.4
1.8
1.1
dB
6
—
7
4.3
3.3
2.7
1.7
dB