Table 4-3: Output Swing Versus De-Emphasis (Dc Coupled) - Xilinx RocketIO X User Manual

Output Swing and Emphasis
The drive/emphasis settings for supported single-ended output swing (Vos) and de-
emphasis levels (%, dB) when DC coupled are shown in
combinations are not supported and should not be used.

Table 4-3: Output Swing versus De-Emphasis (DC Coupled)

0 1 2
0 120mV
0%
0.0dB
1
2
3
4
5
6
T
X
E
7
M
P
H
L 8
E
V
E
9
L
10
11
12
13
14
15
RocketIO™ X Transceiver User Guide
UG035 (v1.5) November 22, 2004
3 4 5 6
180mV 240mV 300mV 360mV
0% 0% 0% 0%
0.0dB 0.0dB 0.0dB 0.0dB
210mV 270mV 330mV 390mV
29% 22% 18% 15%
-2.9dB -2.2dB -1.7dB -2.9dB
240mV 300mV 360mV 420mV
50% 40% 33% 29%
-6.0dB -4.4dB -3.5dB -2.9dB
330mV 390mV 450mV
55% 46% 40%
-6.8dB -5.4dB -4.4dB
360mV 420mV 480mV
67% 57% 50%
-9.5dB -7.4dB -6.0dB
450mV 510mV
67% 59%
-9.5dB -7.7dB
480mV 540mV
75% 67%
-12.0dB -9.5dB
570mV
74%1
-11.6dB
600mV
80%
-14.0dB
www.xilinx.com
1-800-255-7778
TXDOWNLEVEL
7 8 9
420mV 480mV 540mV 600mV
0% 0% 0%
0.0dB 0.0dB 0.0dB
450mV 510mV 570mV 630mV
13% 12% 11%
-1.2dB -1.1dB -1.0dB
480mV 540mV 600mV 660mV
25% 22% 20%
-2.5dB -2.2dB -1.9dB
510mV 570mV 630mV 690mV
35% 32% 29%
-3.8dB -3.3dB -2.9dB
540mV 600mV 660mV 720mV
44% 40% 36%
-5.1dB -4.4dB -3.9dB
570mV 630mV 690mV 750mV
53% 48% 43%
-6.5dB -5.6dB -5.0dB
600mV 660mV 720mV 780mV
60% 55% 50%
-8.0dB -6.8dB -6.0dB
630mV 690mV 750mV
67% 61% 56%
-9.5dB -8.1dB -7.1dB
660mV 720mV 780mV
73% 67% 62%
-11.3dB -9.5dB -8.3dB
690mV 750mV
78% 72%
-13.3dB -11.1dB
720mV 780mV
83% 77%
-15.6dB -12.7dB
Table 4-3. The unused (grey)
10 11 12 13
660mV 720mV 780mV
0% 0% 0% 0%
0.0dB 0.0dB 0.0dB 0.0dB
690mV 750mV
10% 9% 8%
-0.9dB -0.8dB -0.7dB
720mV 780mV
18% 17% 15%
-1.7dB -1.6dB -1.5dB
750mV
26% 15%
-2.6dB -2.4dB
780mV
33% 31%
-3.5dB -3.2dB
40%
-4.4dB
46%
-5.4dB
R
14 15
97