USB3503 datasheet(40/82 Pages) SMSC

40 / 82 page

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

Datasheet

SMSC USB3503A

Revision 1.1 (02-07-13)

DATASHEET

5.3.34

Default = 0x00h

5.3.35

Default = 0x30h

BIT NUMBER

BIT NAME

DESCRIPTION

Reserved

6:4

DN2_SQUELCH These two bits control the Squelch setting of the downstream port 2.

‘000’ = Nominal value

‘001’ = 90% of Nominal value

‘010’ = 80% of Nominal value

‘011’ = 70% of Nominal value

‘100’ = 60% of Nominal value

‘101’ = 50% of Nominal value

‘110’ = 120% of Nominal value

‘111’ = 110% of Nominal value

Reserved

2:0

DN1_SQUELCH These three bits control the Squelch setting of the downstream port 1.

‘000’ = Nominal value

‘001’ = 90% of Nominal value

‘010’ = 80% of Nominal value

‘011’ = 70% of Nominal value

‘100’ = 60% of Nominal value

‘101’ = 50% of Nominal value

‘110’ = 120% of Nominal value

‘111’ = 110% of Nominal value

BIT NUMBER

BIT NAME

DESCRIPTION

7:3

Reserved

2:0

BOOST_IOUT_3 USB electrical signaling drive strength Boost Bit for Downstream Port ‘3’.

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%

USB3503 Datasheet(PDF) 40 Page - SMSC Corporation

USB3503 Datasheet(HTML) 40 Page - SMSC Corporation

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