TUSB1044 datasheet(3/67 Pages) TI1

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Thermal

Pad

VCC

UEQ1/A1

CFG0

CFG1

SWAP

VCC

SLP_S0#

DIR0

FLIP/SCL

CTL0/SDA

CTL1

AUXp

AUXn

SBU2

SBU1

VCC

Not to scale

TUSB1044

www.ti.com

SLLSF47B – FEBRUARY 2018 – REVISED APRIL 2018

Product Folder Links: TUSB1044

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5 Pin Configuration and Functions

RNQ Package

40-Pin (WQFN)

Top View

Pin Functions

I/O

DESCRIPTION

NO.

NAME

VCC

3.3 V Power Supply

UEQ1/A1

4 Level I

This pin along with UEQ0 sets the high-frequency equalizer gain for upstream facing URX1, URX2, UTX1,

UTX2 receivers. In I2C Mode, this pin will also set TUSB1044 I2C address. Refer to Table 9.

CFG0

4 Level I

CFG0. This pin along with CFG1 will select VOD linearity range and DC gain for all the downstream and

upstream channels. Refer to Table 8 for VOD linearity range and DC gain options.

CFG1

4 Level I

CFG1. This pin along with CFG0 will set VOD linearity range and DC gain for all the downstream and

upstream channels. Refer to Table 8 for VOD linearity range and DC gain options.

SWAP

2 Level I

This pin swaps all the channel directions and EQ settings of downstream facing and upstream facing data

path inputs.

0 – Do not swap channel directions and EQ settings (Default)

1. – Swap channel directions and EQ settings.

VCC

3.3V Power Supply

SLP_S0#

2 Level I

This pin when asserted low will disable Receiver Detect functionality. While this pin is low and TUSB1044

is in U2/U3, TUSB1044 will disable LOS and LFPS detection circuitry and RX termination for both

channels will remain enabled. If this pin is low and TTUSB1044 is in Disconnect state, the RX detect

functionality will be disabled and RX termination for both channels will be disabled.

0 – RX Detect disabled

1 – RX Detect enabled (Default)

DIR0

2 Level I

This pin along with DIR1 sets the data path signal direction format. Refer to Table 4 for signal direction

formats.

0 - Source Side (DFP) Alt Mode format

1 - Sink Side (UFP) Alt Mode format

URX2p

Diff I/O

Differential positive input/output for upstream facing RX2 port.

URX2n

Diff I/O

Differential negative input/output for upstream facing RX2 port.

DIR1

2 Level I/O

This pin along with DIR0 sets the data path signal direction format. Refer to Table 4 for signal direction

formats.

0 - DisplayPort Alt Mode format

1 - Custom Alt Mode format

TUSB1044 Datasheet(PDF) 3 Page - Texas Instruments

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