USB2512I Ver la hoja de datos (PDF) - SMSC -> Microchip
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USB2512I Datasheet PDF : 37 Pages
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4.2.1.9
Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller
Datasheet
Register 08h: Configuration Data Byte 3
BIT
NUMBER
7:4
3
2:0
BIT NAME
Reserved
PRTMAP_EN
Reserved
DESCRIPTION
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
4.2.1.10 Register 09h: Non-Removable Device
BIT
NUMBER
7:0
BIT NAME
NR_DEVICE
DESCRIPTION
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’
Revision 1.92 (11-28-07)
18
DATASHEET
SMSC USB2512i
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