USB3503 datasheet(41/82 Pages) SMSC

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USB 2.0 HSIC High-Speed Hub Controller Optimized for Portable Applications

Datasheet

SMSC USB3503A

Revision 1.1 (02-07-13)

DATASHEET

5.3.36

Default = 0x00h

5.3.37

Default = 0x00h

BIT NUMBER

BIT NAME

DESCRIPTION

Reserved

6:4

BOOST_IOUT_2 USB electrical signaling drive strength Boost Bit for Downstream Port ‘2’.

Boosts USB High Speed Current.

3’b000: Nominal

3’b001: -5%

3’b010: +10%

3’b011: +5%

3’b100: +20%

3’b101: +15%

3’b110: +30%

3’b111: +25%

Reserved

2:0

BOOST_IOUT_1 USB electrical signaling drive strength Boost Bit for Downstream Port ‘1’.

Boosts USB High Speed Current.

3’b000: Nominal

3’b001: -5%

3’b010: +10%

3’b011: +5%

3’b100: +20%

3’b101: +15%

3’b110: +30%

3’b111: +25%

BIT NUMBER

BIT NAME

DESCRIPTION

7:0

PRTSP

Port Swap: Swaps the Upstream HSIC and Downstream USB DP and DM Pins

for ease of board routing to devices and connectors.

‘0’ = USB D+ functionality is associated with the DP pin and D- functionality is

associated with the DM pin.

‘1’ = USB D+ functionality is associated with the DM pin and D- functionality is

associated with the DP pin.

Bit 7= Reserved

Bit 6= Reserved

Bit 5= Reserved

Bit 4= Reserved

Bit 3= Port 3 DP/DM Swap.

Bit 2= Port 2 DP/DM Swap.

Bit 1= Port 1 DP/DM Swap.

Bit 0= Reserved

USB3503 Datasheet(PDF) 41 Page - SMSC Corporation

USB3503 Datasheet(HTML) 41 Page - SMSC Corporation

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