USB2503-HZH Standard Microsystems Corp., USB2503-HZH Datasheet - Page 21
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USB2503-HZH
Manufacturer Part Number
USB2503-HZH
Description
Interface, Integrated USB2.0 Compatible 3-Port Hub
Manufacturer
Standard Microsystems Corp.
Datasheet
1.USB2503-HZH.pdf
(41 pages)
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Integrated USB2.0 Compatible 3-Port Hub
Datasheet
SMSC USB2503
5.2.3.7
5.2.3.8
5.2.3.9
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
7:0
7:0
7:0
EEPROM Offset 9(h) - Port Disable For Self Powered Operation
EEPROM Offset A(h) - Port Disable For Bus Powered Operation
EEPROM Offset B(h) - Max Power For Self Powered Operation
PORT_DIS_SP
PORT_DIS_BP
MAX_PWR_SP
BIT NAME
BIT NAME
BIT NAME
Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= Reserved.
Bit 3= 1; Port 3 is disabled.
Bit 2= 1; Port 2 is disabled.
Bit 1= 1; Port 1 is disabled.
Bit 0 is Reserved, always = ‘0’
Port Disable Bus-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= Reserved.
Bit 3= 1; Port 3 is disabled.
Bit 2= 1; Port 2 is disabled.
Bit 1= 1; Port 1 is disabled.
Bit 0 is Reserved, always = ‘0’
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 USB2.0 Specification does not permit this value to exceed 100mA
A value of 50 (decimal) indicates 100mA.
16
DESCRIPTION
DESCRIPTION
DESCRIPTION
Revision 1.3 (08-24-04)