Texas Instruments TUSB1002EVM, User Manual, Page: 5 / 16

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Selecting Equalization Level for TUSB1002
5 SLLU245 – May 2016
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TUSB1002 Evaluation Module
3 Selecting Equalization Level for TUSB1002
The equalization level of each channel is configured via the CHx_CFG1 and CHx_CFG2 pin states.
Table 2 lists all possible equalization levels that can be achieved with the TUSB1002:
Table 2. TUSB1002 Equalization Selection
Equalization Level Selector
CHx_EQ2 Pin Level CHx_EQ1 Pin Level EQ Gain at 5 GHz
(dB)
0 0 2.5
0 R 4.2
0 F 5.5
0 1 7
R 0 8
R R 9
R F 10
R 1 10.7
F 0 11.4
F R 12.2
F F 12.7
F 1 13.2
1 0 13.7
1 R 14.2
1 F 14.7
1 1 15.1
4 Adjustable VOD Linear Range and DC Gain
The CFG1 and CFG2 pins can be used to adjust the TUSB1002 output voltage swing linear range and
receiver equalization DC gain.
Table 3 details the available options.
Table 3. TUSB1002 Adjustable VOD and DC Gain
Setting # CFG1 Pin Level CFG2 Pin Level CH1 DC Gain
(dB)
CH2 DC Gain
(dB)
CH1 VOD
Linear Range
(mVpp)
CH2 VOD
Linear Range
(mVpp)
1 0 0 +1 0 900 900
2 0 R 0 +1 900 900
3 0 F 0 0 900 900
4 0 1 +1 +1 900 900
5 R 0 0 0 1000 1000
6 R R +1 0 1000 1000
7 R F 0 –1 1000 1000
8 R 1 +2 +2 1000 1000
9 F 0 –1 –1 1200 1200
10 F R –2 –2 1200 1200
11 F F 0 0 1200 1200
12 F 1 +1 +1 1200 1200
13 1 0 –1 0 1200 1200
14 1 R 0 –1 1200 1200
15 1 F 0 +1 1200 1200
16 1 1 +1 0 1200 1200