USB2422SLASHMJ datasheet(33/51 Pages) SMSC

33 / 51 page

2-Port USB 2.0 Hi-Speed Hub Controller

Datasheet

SMSC USB2422

Revision 1.0 (06-04-13)

DATASHEET

4.4.16

Hub Controller Max Power for Bus-Powered Operation Register

(HCMCB)

4.4.17

Power-On Time Register (PWRT)

4.4.18

Language ID High Register (LANGIDH)

4.4.19

Language ID Low Register (LANGIDL)

Address:

0Fh

Size:

8 bits

BITS

DESCRIPTION

TYPE

DEFAULT

7:0

Hub Controller Max Power Bus-Powered (MAX_PWR_BP)

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.

R/W

00h

Address:

10h

Size:

8 bits

BITS

DESCRIPTION

TYPE

DEFAULT

7:0

Power-On Time (POWER_ON_TIME)

The length of time that is 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. System software uses this value to determine how long to wait before

accessing a powered-on port.

R/W

00h

Address:

11h

Size:

8 bits

BITS

DESCRIPTION

TYPE

DEFAULT

7:0

USB Language ID High (LANG_ID_H)

Upper 8 bits of the 16-bit language ID field.

R/W

00h

Address:

12h

Size:

8 bits

BITS

DESCRIPTION

TYPE

DEFAULT

7:0

USB Language ID Low (LANG_ID_L)

Lower 8 bits of the 16-bit language ID field.

R/W

00h

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