USB3503 datasheet(33/73 Pages) MICROCHIP

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DS00001584B-page 33

USB3503

5.3.36

Default = 0x00h

5.3.37

Default = 0x00h

Bit Number

Bit Name

Description

Reserved

6:4

BOOST_IOUT_

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_

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 数据表(PDF) 33 Page - Microchip Technology

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