USB2503 datasheet(27/46 Pages) SMSC

27 / 46 page

USB 2.0 High-Speed 4-Port Hub Controller

Datasheet

SMSC USB2514

Revision 1.92 (05-08-07)

DATASHEET

4.3.1.16

4.3.1.17

4.3.1.18

4.3.1.19

4.3.1.20

BIT

NUMBER

BIT NAME

DESCRIPTION

7:0

HC_MAX_C_BP

Hub Controller Max Current Bus-Powered: Value in 2mA 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 100mA, which is the default value.

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

good on that port.

BIT

NUMBER

BIT NAME

DESCRIPTION

7:0

LANG_ID_H

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

BIT

NUMBER

BIT NAME

DESCRIPTION

7:0

LANG_ID_L

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

BIT

NUMBER

BIT NAME

DESCRIPTION

7:0

MFR_STR_LEN

Manufacturer String Length

Maximum string length is 31 characters

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