USB2512A Standard Microsystems Corp., USB2512A Datasheet - Page 18

• Manufacturer Part Number: USB2512A
• Description: Usb2512a Usb 2.0 High-speed 2-port Hub Controller
• Manufacturer: Standard Microsystems Corp.

Revision 1.96 (07-11-08)
4.2.1.9
4.2.1.10
NUMBER
NUMBER
BIT
BIT
7:4
2:0
7:0
3
Register 08h: Configuration Data Byte 3
Register 09h: Non-Removable Device
PRTMAP_EN
NR_DEVICE
BIT NAME
BIT NAME
Reserved
Reserved
Reserved
Port Re-mapping enable: Selects the method used by the hub to assign port
numbers and disable ports.
‘0’ = Standard Mode
‘1’ = Port Re-map mode
Reserved
Non-Removable Device: Indicates which port(s) include non-removable
devices. ‘0’ = port is removable, ‘1’ = port is non-removable.
Informs the Host if one of the active ports has a permanent device that is
undetachable from the Hub. (Note: The device must provide its own
descriptor data.)
When using the internal default option, the NON_REM[1:0] pins will
designate the appropriate ports as being non- removable.
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 non-removable
Bit 1= 1; Port 1 non removable
Bit 0= Reserved, always = ‘0’
DATASHEET
18
DESCRIPTION
DESCRIPTION
USB 2.0 Hi-Speed 2-Port Hub Controller
SMSC USB2512A
Datasheet