7.2.1 Design Requirements

Design requirements of the MHL and USB 1.0,1.1, and 2.0 standards must be followed.

The TS3USB3031 has internal 6-MΩ pulldown resistors on SEL0 and SEL1 so no external resistors are required

on the logic pins. The pulldown on SEL0 and SEL1 ensure the USB1 channel is selected by default.

The TS5A3157 is a separate SPDT switch that is used to switch between the CBUS of the MHL and the USB ID

line that is required for USB OTG (USB On-The-Go) application.

7.2.2 Detailed Design Procedure

The TS3USB3031 can be properly operated without any external components. However, TI recommends that

unused signal I/O pins must be connected to ground through a 50-Ω resistor to prevent signal reflections back

into the device.

7.2.3 Application Curves

7.2.3.1 MHL Eye Pattern

Figure 7-2. Eye Pattern Error Histogram: 2.25 Gbps

With No Device

Figure 7-3. Time Interval Error Histogram: 2.25

Gbps With No Device

Figure 7-4. Eye Pattern Error Histogram: 2.25 Gbps

With TS3USB3031 (Added Jitter = 5.04 ps)

Figure 7-5. Time Interval Error Histogram: 2.25

Gbps With TS3USB3031 (Added Jitter = 5.04 ps)

TS3USB3031

SCDS348D – SEPTEMBER 2013 – REVISED AUGUST 2024

www.ti.com

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