SMSC LAN9514 Manual Do Utilizador

USB Hub with Integrated 10/100 Ethernet Controller

Revision 1.0 (04-20-09)

30

SMSC LAN9514

 

2:1

Selects current sensing on a port-by-port basis, all ports ganged, or none 

(only for bus-powered hubs) The ability to support current sensing on a port 

or ganged basis is hardware implementation dependent.

00 = Ganged sensing (all ports together)

01 = Individual port-by-port

1x = Over current sensing not supported (must only be used with Bus- 

Powered configurations!)

01b

0

Enables power switching on all ports simultaneously (ganged), or port power 

is individually switched on and off on a port by port basis (individual). The 

ability to support power enabling on a port or ganged basis is hardware 

implementation dependent.

0 = Ganged switching (all ports together)

1 = Individual port by port switching

1b

7:6

00b

5:4

Over Current Timer delay

00 = 50ns

01 = 100ns (This is the recommended value)

10 = 200ns

11 = 400ns

01b

3

Allows the OEM to indicate that the Hub is part of a compound (see the USB 

Specification for definition) device. The applicable port(s) must also be 

defined as having a “Non-Removable Device”.

0 = No

1 = Yes, Hub is part of a compound device

1b

2:0

000b