TUSB1046AI-DCI datasheet(30/48 Pages) TI1

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TUSB1046A-DCI

SLLSF13 – JUNE 2017

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Typical Application (continued)

9.2.1 Design Requirements

For this design example, use the parameters shown in Table 19.

Table 19. Design Parameters

PARAMETER

VALUE

A to B PCB trace length, XAB

12 inches

C to D PCB trace length, XCD

12 inches

E to F PCB trace length, XEF

2 inches

G to H PCB trace length, XGH

2 inches

PCB trace width

4 mils

AC-coupling capacitor (75 nF to 265 nF)

100 nF

VCC supply (3 V to 3.6 V)

3.3 V

I2C Mode or GPIO Mode

I2C Mode. (I2C_EN pin != "0")

1.8V or 3.3V I2C Interface

3.3V I2C. Pull-up the I2C_EN pin to 3.3V with a 1K

ohm resistor.

9.2.2 Detailed Design Procedure

A typical usage of the TUSB1046-DCI device is shown in Figure 28. The device can be controlled either through

its GPIO pins or through its I2C interface. In the example shown below, a Type-C PD controller is used to

configure the device through the I2C interface. When configured for I2C mode, pins 29 (RSVD1) and 32 (RSVD2)

can be left unconnected. In I2C mode, the equalization settings for each receiver can be independently controlled

through I2C registers. For this reason, all of the equalization pins (EQ[1:0], SSEQ[1:0], and DPEQ[1:0]) can be

left unconnected. If these pins are left unconnected, the TUSB1046-DCI 7-bit I2C slave address will be 0x12

because both DPEQ/A1 and SSEQ0/A0 will be at pin level "F". If a different I2C slave address is desired,

DPEQ/A1 and SSEQ0/A0 pins should be set to a level which produces the desired I2C slave address.

TUSB1046AI-DCI датащи(PDF) 30 Page - Texas Instruments