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TUSB1142 Datasheet(PDF) 21 Page - Texas Instruments

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Part # TUSB1142
Description  TUSB1142 USB Type-C??10 Gbps USB 3.2 2:1/1:2 Mux/DeMux Adaptive Linear Redriver
PDF  55 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TUSB1142 Datasheet(HTML) 21 Page - Texas Instruments

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7.3.2.1 Linear EQ Configuration
Each of the TUSB1142 receiver lanes have individual controls for receiver equalization. The receiver
equalization gain value can be controlled either through I2C registers or through pin-straps. Table 7-2 and Table
7-3 details the gain value for each available combination when TUSB1142 is in pin-strap mode. These same
options are also available in I2C mode by updating registers CEQ1_SEL, CEQ2_SEL, and SSEQ1_SEL.
Table 7-2. USB Connector Facing Port Receiver (CRX1 and CRX2 pins) Equalization Control
Register(s): CEQ1_SEL or
CEQ2_SEL
Equalization Setting #
CEQ1 PIN Level
CEQ0 PIN Level
EQ Gain at 5 GHz minus Gain
at 100 MHz
(dB)
0
0
0
-0.4
1
0
R
1.9
2
0
F
3.5
3
0
1
5.0
4
R
0
6.1
5
R
R
7.2
6
R
F
8.0
7
R
1
8.8
8
F
0
9.6
9
F
R
10.2
10
F
F
10.7
11
F
1
11.2
12
1
0
11.6
13
1
R
12.0
14
1
F
12.4
15
1
1
12.7
Table 7-3. USB Host Facing Port Receiver (SSTX) Equalization Control
Register(s): SSEQ1_SEL
Equalization Setting #
SSEQ1 PIN LEVEL
SSEQ0 PIN LEVEL
EQ Gain at 5 GHz minus
Gain at 100 MHz
(dB)
0
0
0
0.6
1
0
R
2.8
2
0
F
4.5
3
0
1
6.0
4
R
0
7.0
5
R
R
8.0
6
R
F
9.0
7
R
1
10.0
8
F
0
10.6
9
F
R
11.2
10
F
F
11.7
11
F
1
12.2
12
1
0
12.5
13
1
R
13.0
14
1
F
13.3
15
1
1
13.6
www.ti.com
TUSB1142
SLLSFL2 – APRIL 2022
Copyright © 2022 Texas Instruments Incorporated
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