USB2524-ABZJ Standard Microsystems (SMSC), USB2524-ABZJ Datasheet - Page 26

• Manufacturer Part Number: USB2524-ABZJ
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2524-ABZJ

• Lead Free Status / RoHS Status: Compliant

Revision 1.91 (08-22-07)
7.1.4.11
7.1.4.12
7.1.4.13
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
7:0
7:0
7:0
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
BIT NAME
BIT NAME
BIT NAME
Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port is
available, ‘1’ = port is disabled.
During Self-Powered operation, this selects the ports which will be permanently
disabled, and are not available to be enabled or enumerated by a Host
Controller. The disabled ports must be contiguous, and must be in decreasing
order starting with port 4.
When using the internal default option, the PRT_DIS[1:0] pins will disable the
appropriate ports.
Bit 7= Reserved, always = ‘0’.
Bit 6= Reserved, always = ‘0’.
Bit 5= Reserved, always = ‘0’.
Bit 4= 1; Port 4 is disabled.
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.
During Bus-Powered operation, this selects the ports which will be permanently
disabled, and are not available to be enabled or enumerated by a Host
Controller. The disabled ports must be contiguous, and must be in decreasing
order starting with port 4.
When using the internal default option, the PRT_DIS[1:0] pins will disable the
appropriate ports.
Bit 7= Reserved, always = ‘0’.
Bit 6= Reserved, always = ‘0’.
Bit 5= Reserved, always = ‘0’.
Bit 4= 1; Port 4 is disabled.
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 USB 2.0 Specification does not permit this value to exceed
100mA
DATASHEET
26
DESCRIPTION
DESCRIPTION
DESCRIPTION
USB MultiSwitch
SMSC USB2524
Datasheet
TM
Hub