USB5533B datasheet(28/71 Pages) MICROCHIP

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USB5533B

DS00001680C-page 28

 2012 - 2015 Microchip Technology Inc.

5.2.17.4

No Port Power Controls

This parameter requires setting the hubs power-on time to 0 for both USB 2.0 and USB 3.0 hubs. It also requires the

setting of the USB3 PWR_SW_CTL signal.

USB POWER-ON TIME (ADVANCED)

This parameter sets the USB power-on to power Good time in 2ms intervals for both the USB 2.0 and USB 3.0 hubs.

USB 3.0 NO POWER SWITCH SELECT

When enabled, the USB 3.0 hub operates in accordance with the USB 3.0 specification for No Power Switches.

5.2.17.5

USB 2.0 Over-Current Timer

This setting controls the signal filter on the OCS pin for the USB 2.0 hub. These settings should be controlled with care,

as the default configuration has been tested thoroughly.

The valid settings are:

• 50ns

• 1000ns

• 200ns

• 400ns

5.2.17.6

USB 3.0 Over-Current Timer

This setting controls the signal filter on the OCS pin for the USB 3.0 hub. These settings should be controlled with care,

as the default configuration has been tested thoroughly.

The valid settings are:

• 750ns

• 10000ns

• 1250ns

• 1500ns

5.2.18

USB2 PORT DP/DM PIN SWAP

This per-port setting internally swaps the DP and DM signals for the USB 2.0 port.

Port 0 = UFP

Port 1-7 = DFP ports 1-7

5.2.19

USB 2.0 PORT HS OUTPUT CURRENT

This per-port setting boosts the USB High-Speed driver output.

Port 0 = UFP

Port 1-7 = DFP ports 1-7

Settings are defined within the Protouch tool.

5.2.20

USB 2.0 PORT SQUELCH

This per-port setting modifies the USB input squelch setting.

Port 0 = UFP

Port 1-7 = DFP ports 1-7

Settings are defined within the Protouch tool.

5.2.21

USB 2.0 HUB ADVANCED CONTROLS

The settings in the following sub-sections are advanced controls, which most applications will not require to be set, since

the default configurations allow seamless operation. Only advanced users/applications should override the default con-

figurations detailed here.

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