HD3SS460_15 Datasheet, PDF (10/31 Pages) Texas Instruments – HD3SS460 4 x 6 Channels USB Type-C Alternate Mode MUX

HD3SS460
SLLSEM7A – JANUARY 2015 – REVISED MARCH 2015
www.ti.com
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
FLOW ⁽¹⁾
SBU SIGNAL FLOW
SSRX SSTX
CRX1
L
L
H
2CH USBSS + 2CH AM
(Normal)
CTX1
CTX2
CRX2
LnD
LnC ^CSBU1
CSBU2
LnB
LnA
SBU1
SBU2
SSRX SSTX
CRX1
H
L
H
2CH USBSS + 2CH AM
(Flipped)
CTX1
CTX2
CRX2
LnD
LnC ^CSBU1
CSBU2
LnB
LnA
SBU1
SBU2
(1) All positive signals connect to positive and negative to negative
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