USB2502-HT Standard Microsystems (SMSC), USB2502-HT Datasheet - Page 30

• Manufacturer Part Number: USB2502-HT
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2502-HT

• Package Type: TQFP
• Lead Free Status / RoHS Status: Compliant

Revision 2.3 (08-27-07)
5.3.9.10
5.3.9.11
5.3.9.12
5.3.9.13
NUMBER
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
BIT
7:0
7:0
7:0
7:0
Register 09h: Non-Removable Device (Reset = 0x00)
Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00)
Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00)
Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00)
PORT_DIS_SP
PORT_DIS_BP
MAX_PWR_SP
NR_DEVICE
BIT NAME
BIT NAME
BIT NAME
BIT NAME
Non-Removable Device: Indicates which port(s) include non-removable devic-
es. ‘0’ = port is removable, ‘1’ = port is non-removable.
Bit 2= 1; Port 2 non-removable.
Bit 1= 1; Port 1 non removable.
Bit 0 is Reserved, always = ‘0’.
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’
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’
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.
Bit 7:3: Reserved, always = ‘0’
DATASHEET
30
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
2-Port USB 2.0 Hub Controller
SMSC USB2502
Datasheet