USB2512 SMSC Corporation, USB2512 Datasheet - Page 19

• Manufacturer Part Number: USB2512
• Description: USB 2.0 High-Speed 2-Port Hub Controller
• Manufacturer: SMSC Corporation

USB 2.0 High-Speed 2-Port Hub Controller
Datasheet
SMSC USB2512
4.2.1.11
4.2.1.12
4.2.1.13
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
7:0
7:0
Register 0Ah: Port Disable For Self Powered Operation
Register 0Bh: Port Disable For Bus Powered Operation
Register 0Ch: Max Power For Self Powered Operation
PORT_DIS_SP
PORT_DIS_BP
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
(PRTMAP_EN='0'),
disabled, and are not available to be enabled or enumerated by a Host
Controller. The ports can be disabled in any order, the internal logic will
automatically report the correct number of enabled ports to the USB Host,
and will reorder the active ports in order to ensure proper function.
Bit 7= Reserved, always = ‘0’
Bit 6= Reserved, always = ‘0’
Bit 5= Reserved, always = ‘0’
Bit 4= Reserved, always = ‘0’
Bit 3= Reserved, always = ‘1’
Bit 2= 1; Port 2 is disabled
Bit 1= 1; Port 1 is disabled
Bit 0= Reserved, always = ‘0’
Port Disable Bus-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
During Self-Powered operation
(PRTMAP_EN='0'),
disabled, and are not available to be enabled or enumerated by a Host
Controller. The ports can be disabled in any order, the internal logic will
automatically report the correct number of enabled ports to the USB Host,
and will reorder the active ports in order to ensure proper function.
When using the internal default option, the PRT_DIS[1:0] pins will disable the
appropriate ports.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= Reserved
Bit 3= Reserved, always = ‘1’
Bit 2= 1; Port 2 is disabled
Bit 1= 1; Port 1 is disabled
Bit 0 is Reserved, always = ‘0’
DATASHEET
19
this selects the ports which will be permanently
this selects the ports which will be permanently
DESCRIPTION
DESCRIPTION
DESCRIPTION
when remapping mode is disabled
when remapping mode is disabled
Revision 1.92 (11-28-07)