USB 2.0 Hi-Speed 2-Port Hub Controller

Datasheet

4.2.1.9Register 08h: Configuration Data Byte 3

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

7:4

Reserved

Reserved

 

 

 

3

PRTMAP_EN

Port Re-mapping enable: Selects the method used by the hub to assign port

 

 

numbers and disable ports.

 

 

‘0’ = Standard Mode

 

 

‘1’ = Port Re-map mode

 

 

 

2:0

Reserved

Reserved

 

 

 

4.2.1.10Register 09h: Non-Removable Device

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 ports has a permanent device that is

 

 

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

 

 

descriptor data.)

 

 

When using the internal default option, the NON_REM[1:0] pins will

 

 

designate the appropriate ports as being non- removable.

 

 

Bit 7= Reserved, always = ‘0’

 

 

Bit 6= Reserved, always = ‘0’

 

 

Bit 5= Reserved, always = ‘0’

 

 

Bit 4= Reserved, always = ‘0’

 

 

Bit 3= Reserved, always = ‘1’

 

 

Bit 2= 1; Port 2 non-removable

 

 

Bit 1= 1; Port 1 non removable

 

 

Bit 0= Reserved, always = ‘0’

 

 

 

Revision 1.96 (07-11-08)

18

SMSC USB2512A

 

DATASHEET