USB 2.0 Hi-Speed Hub Controller

Datasheet

8.2.1.16Register 0Fh: Hub Controller Max Current For Bus-Powered Operation

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

7:0

HC_MAX_C_BP

Hub Controller Max Current Bus-Powered: Value in 2 mA increments that the

 

 

hub consumes from an upstream port (VBUS) when operating as a bus-

 

 

powered hub. This value will include the hub silicon along with the combined

 

 

power consumption (from VBUS) of all associated circuitry on the board.

 

 

This value will NOT include the power consumption of a permanently

 

 

attached peripheral if the hub is configured as a compound device.

 

 

A value of 50 (decimal) would indicate 100 mA, which is the default value.

 

 

 

8.2.1.17Register 10h: Power-On Time

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

7:0

POWER_ON_TIME

Power-On Time: The length of time that it takes (in 2 ms intervals) from the

 

 

time the host initiated power-on sequence begins on a port until power is

 

 

adequate on that port.

 

 

 

8.2.1.18

Register 11h: Language ID High

 

 

 

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

7:0

LANG_ID_H

USB Language ID (Upper 8 bits of a 16-bit ID field)

 

 

 

8.2.1.19

Register 12h: Language ID Low

 

 

 

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

7:0

LANG_ID_L

USB Language ID (Lower 8 bits of a 16-bit ID field)

 

 

 

8.2.1.20

Register 13h: Manufacturer String Length

 

 

 

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

7:0

MFR_STR_LEN

Manufacturer String Length

 

 

When supported, the maximum string length is 31 characters.

 

 

 

8.2.1.21Register 14h: Product String Length

BIT

 

 

 

 

NUMBER

 

BIT NAME

 

DESCRIPTION

 

 

 

 

 

7:0

 

PRD_STR_LEN

Product String Length

 

 

 

 

When supported, the maximum string length is 31 characters.

 

 

 

 

 

SMSC USB251x

 

43

Revision 1.0 (3-11-09)

DATASHEET