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USB2502 Datenblatt(PDF) 30 Page - SMSC Corporation

Teilenummer USB2502
Bauteilbeschribung  2-Port USB 2.0 Hub Controller
PDF  44 Pages
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Hersteller  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

USB2502 Datenblatt(HTML) 30 Page - SMSC Corporation

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2-Port USB 2.0 Hub Controller
Datasheet
Revision 2.1 (12-06-06)
30
SMSC USB2502
DATASHEET
5.3.9.10
Register 09h: Non-Removable Device (Reset = 0x00)
5.3.9.11
Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00)
5.3.9.12
Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00)
5.3.9.13
Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
NR_DEVICE
Non-Removable Device: Indicates which port(s) include non-removable devic-
es. ‘0’ = port is removable, ‘1’ = port is non-removable.
Bit 7:3: Reserved, always = ‘0’
Bit 2= 1; Port 2 non-removable.
Bit 1= 1; Port 1 non removable.
Bit 0 is Reserved, always = ‘0’.
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_DIS_SP
Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
Bit 7:3= 0; ReservedBit 2= 1; Port 2 is disabled.
Bit 1= 1; Port 1 is disabled.
Bit 0 is Reserved, always = ‘0’
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_DIS_BP
Port Disable Bus-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
Bit 7:3= 0; ReservedBit 2= 1; Port 2 is disabled.
Bit 1= 1; Port 1 is disabled.
Bit 0 is Reserved, always = ‘0’
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
MAX_PWR_SP
Max Power Self_Powered: 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 USB 2.0 Specification does not permit this value to exceed
100mA
A value of 50 (decimal) indicates 100mA.



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