LAN9512I-JZX Standard Microsystems (SMSC), LAN9512I-JZX Datasheet - Page 29

• Manufacturer Part Number: LAN9512I-JZX
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9512I-JZX

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Supplier Unconfirmed

USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
SMSC LAN9512/LAN9512i
BITS
BITS
7:6
5:4
2:0
2:1
0
3
Over Current Sense (CURRENT_SNS)
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!)
Port Power Switching (PORT_PWR)
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
RESERVED
Over Current Timer (OC_TIMER)
Over Current Timer delay
00 = 50ns
01 = 100ns (This is the recommended value)
10 = 200ns
11 = 400ns
Compound Device (COMPOUND)
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
RESERVED
Table 3.4 Config Data Byte 1 Register (CFG1) Format (continued)
Table 3.5 Config Data Byte 2 Register (CFG2) Format
DESCRIPTION
DESCRIPTION
DATASHEET
29
Revision 1.0 (11-24-09)
DEFAULT
DEFAULT
000b
01b
00b
01b
1b
1b