USB3503 datasheet(24/73 Pages) MICROCHIP

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USB3503

DS00001584B-page 24

 2011-2015 Microchip Technology Inc.

5.3.10

Default = 0x00h

5.3.11

Default = 0x00h

Bit Number

Bit Name

Description

7:0

NR_DEVICE

Non-Removable Device: Indicates which port(s) include non- removable

devices.

‘0’ = port is removable

‘1’ = port is non- removable.

Informs the Host if one of the active physical ports has a permanent device that

is undetachable from the Hub. (Note: The device must provide its own

descriptor data.)

Bit 7= Reserved

Bit 6= Reserved

Bit 5= Reserved

Bit 4= Reserved

Bit 3= Port 3 non-removable.

Bit 2= Port 2 non-removable.

Bit 1= Port 1 non removable.

Bit 0= Reserved

Bit Number

Bit Name

Description

7:0

PORT_DIS_SP Port Disable, Self-Powered: Disables 1 or more ports.

‘0’ = port is available

‘1’ = port is disabled.

During Self-Powered operation and PRTMAP_EN = ‘0’, this selects the ports

which will be permanently disabled, and are not available to be enabled or

enumerated by a Host Controller. The ports can be disabled in any order, the

internal logic will automatically report the correct number of enabled ports to the

USB Host, and will reorder the active ports in order to ensure proper function.

Bit 7= Reserved

Bit 6= Reserved

Bit 5= Reserved

Bit 4= Reserved

Bit 3= Port 3 Disable.

Bit 2= Port 2 Disable.

Bit 1= Port 1 Disable.

Bit 0= Reserved

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