USB2513 datasheet(40/72 Pages) SMSC

40 / 72 page

USB 2.0 Hi-Speed Hub Controller

Datasheet

Revision 1.0 (3-11-09)

SMSC USB251x

DATASHEET

8.2.1.9

8.2.1.10

BIT

NUMBER

BIT NAME

DESCRIPTION

7:4

Reserved

PRTMAP_EN

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

numbers and disable ports.

‘0’ = Standard mode

‘1’ = Port mapping mode

2:1

LED_MODE

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

several different modes of operation (depending upon OEM implementation

of the LED circuit).

‘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.

STRING_EN

Enables String Descriptor Support

‘0’ = String support disabled

‘1’ = String support enabled

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= Controls Port 7

Bit 6= Controls Port 6

Bit 5= Controls Port 5

Bit 4= Controls Port 4

Bit 3= Controls Port 3

Bit 2= Controls Port 2

Bit 1= Controls Port 1

Bit 0= Reserved

USB2513 数据表(PDF) 40 Page - SMSC Corporation

USB2513 数据表(HTML) 40 Page - SMSC Corporation

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