USB 2.0 High-Speed 3-Port Hub Controller

Datasheet

4.3.1.9Register 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

 

 

 

2:1

LED_MODE

LED Mode Selection: The LED_A[4:1]_N and LED_B[4:1]_N pins support

 

 

several different modes of operation.

 

 

‘00’ = USB Mode

 

 

‘01’ = Speed Indication Mode

 

 

‘10’ = Same as ‘00’, USB Mode

 

 

‘11’ = Same as ‘00’, USB Mode

 

 

Warning: Do not enable an LED mode that requires LED pins that are not

 

 

available in the specific package being used in the implementation!

 

 

Note: The Hub will only report that it supports LED's to the host when

 

 

USB mode is selected. All other modes will be reported as No LED

 

 

Support.

 

 

 

0

STRING_EN

Enables String Descriptor Support

 

 

‘0’ = String Support Disabled

 

 

‘1’ = String Support Enabled

 

 

 

4.3.1.10Register 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

 

 

Bit 6= Reserved

 

 

Bit 5= Reserved

 

 

Bit 4= Reserved

 

 

Bit 3= 1; Port 3 non-removable

 

 

Bit 2= 1; Port 2 non-removable

 

 

Bit 1= 1; Port 1 non removable

 

 

Bit 0 is Reserved, always = ‘0’

 

 

 

Revision 1.98 (11-19-07)

24

SMSC USB2513

 

DATASHEET