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USB2422/MJ Datasheet(PDF) 32 Page - SMSC Corporation

Part # USB2422/MJ
Description  2-Port USB 2.0 Hi-Speed Hub Controller
PDF  51 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

USB2422/MJ Datasheet(HTML) 32 Page - SMSC Corporation

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2-Port USB 2.0 Hi-Speed Hub Controller
Datasheet
Revision 1.0 (06-04-13)
32
SMSC USB2422
DATASHEET
4.4.13
Max Power for Self-Powered Operation Register (MAXPS)
4.4.14
Max Power for Bus-Powered Operation Register (MAXPB)
4.4.15
Hub Controller Max Current for Self-Powered Operation Register
(HCMCS)
Address:
0Ch
Size:
8 bits
BITS
DESCRIPTION
TYPE
DEFAULT
7:0
Max Power Self-Powered (MAX_PWR_SP)
Value in 2mA increments that the Hub consumes from an upstream port
(VBUS) when operating as a self-powered hub. This value includes the hub
silicon along with the combined power consumption (from VBUS) of all
associated circuitry on the board. This value also includes the power
consumption of a permanently attached peripheral if the hub is configured
as a compound device, and the embedded peripheral reports 0mA in its
descriptors.
Note:
The USB2.0 Specification does not permit this value to exceed
100mA.
R/W
00h
Address:
0Dh
Size:
8 bits
BITS
DESCRIPTION
TYPE
DEFAULT
7:0
Max Power Bus-Powered (MAX_PWR_BP)
Value in 2mA increments that the Hub consumes from an upstream port
(VBUS) when operating as a self-powered hub. This value includes the hub
silicon along with the combined power consumption (from VBUS) of all
associated circuitry on the board. This value also includes the power
consumption of a permanently attached peripheral if the hub is configured
as a compound device, and the embedded peripheral reports 0mA in its
descriptors.
R/W
00h
Address:
0Eh
Size:
8 bits
BITS
DESCRIPTION
TYPE
DEFAULT
7:0
Hub Controller Max Current Self-Powered (HC_MAX_C_SP)
Value in 2mA increments that the Hub consumes from an upstream port
(VBUS) when operating as a self- powered hub. This value includes the hub
silicon along with the combined power consumption (from VBUS) of all
associated circuitry on the board. This value does NOT include the power
consumption of a permanently attached peripheral if the hub is configured
as a compound device.
Note:
The USB2.0 Specification does not permit this value to exceed
100mA.
R/W
00h



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