CRX1

CRX2

SSRX

CTX1

SSTX

LnA

CTX2

LnB

LnC

LnD

CSBU1

CSBU2

SBU1

SBU2

CRX1

CRX2

SSRX

CTX1

SSTX

LnA

CTX2

LnB

LnC

LnD

CSBU1

CSBU2

SBU1

SBU2

11

HD3SS460

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SLLSEM7D – JANUARY 2015 – REVISED JANUARY 2017

Product Folder Links: HD3SS460

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Copyright © 2015–2017, Texas Instruments Incorporated

(1)

All positive signals connect to positive and negative to negative

8.3 Feature Description

8.3.1 High Speed Differential Signal Switching

Based on control pin AMSEL the device provides muxing options of:

1. 1 port (RX and TX) USB3.1 SS data / 2Ch video (or any other Alternate Mode data)

2. All 4Ch video (or any other Alternate Mode data)

3. 1 port (RX and TX) USB3.1 SS data

4. 1 port (RX and TX) USB3.1 SS data / 2Ch video (or any other Alternate Mode data) with option of choosing

video from two different source/sink

5. 1 port (RX and TX) USB3.1 SS data / 2Ch video (or any other Alternate Mode data) with option of choosing

video 2 Ln Video or 1 Ln Video from two different source/sink

8.3.2 Low Speed SBU Signal Switching

The device also provides cross point muxing for low speed SBU signals as needed in USB Type-C flippable

connector implementation. The device provides the option to choose the USB only implementation where SBU

ports are in tri-state.

8.3.3 Output Enable and Power Savings

The HD3SS460 has two power modes, active/normal operating mode and standby/shutdown mode. During

standby mode, the device consumes very little current to save the maximum power. To enter standby mode, the

EN control pin is pulled low and must remain low. For active/normal operation, the EN control pin should be

pulled high to VDD through a resistor or dynamically controlled to switch between H or M.

HD3SS460 consumes <2 mW of power when operational and <5 µW in shutdown mode, exercisable by the EN

pin.

8.4 Device Functional Modes

8.4.1 Device High Speed Switch Control Modes

Table 1. MUX Control for High Speed and Low Speed SBU Channels

POL

AMSEL

EN

CONFIGURATIONS

HIGH SPEED SIGNAL

SBU SIGNAL FLOW

L

L

H

2CH USBSS + 2CH AM

(Normal)

H

L

H

2CH USBSS + 2CH AM

(Flipped)