LAN9514-JZX Standard Microsystems (SMSC), LAN9514-JZX Datasheet - Page 24

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LAN9514-JZX

Manufacturer Part Number
LAN9514-JZX
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet

Specifications of LAN9514-JZX

Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
3.6V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Lead Free Status / RoHS Status
Compliant

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Revision 1.0 (11-24-09)
EEPROM
OFFSET
2Ch
2Dh
2Ah
2Bh
Port Disable (Self) Register (PDS)
Disables 1 or more ports.
0 = Port is available
1 = Port is disabled
During Self-Powered operation, this selects the ports which will be permanently
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
Bit 6 = RESERVED
Bit 5 = 1; Port 5 disabled
Bit 4 = 1; Port 4 disabled
Bit 3 = 1; Port 3 disabled
Bit 2 = 1; Port 2 disabled
Bit 1 = 1; Port 1 disabled
Bit 0 is RESERVED, always = 0b
Port Disable (Bus) Register (PDB)
Disables 1 or more ports.
0 = Port is available
1 = Port is disabled
During Bus-Powered operation, this selects the ports which will be permanently
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
Bit 6 = RESERVED
Bit 5 = 1; Port 5 disabled
Bit 4 = 1; Port 4 disabled
Bit 3 = 1; Port 3 disabled
Bit 2 = 1; Port 2 disabled
Bit 1 = 1; Port 1 disabled
Bit 0 is RESERVED, always = 0b
Max Power (Self) Register (MAXPS)
Value in 2mA increments that the Hub consumes from an upstream port (VBUS) when
operating as a self-powered hub. This value includes the hub silicon along with the
combined power consumption (from VBUS) of all associated circuitry on the board.
This value also includes the power consumption of a permanently attached peripheral
if the hub is configured as a compound device, and the embedded peripheral reports
0mA in its descriptors.
Note:
Max Power (Bus) Register (MAXPB)
Value in 2mA increments that the Hub consumes from an upstream port (VBUS) when
operating as a bus-powered hub. This value includes the hub silicon along with the
combined power consumption (from VBUS) of all associated circuitry on the board.
This value also includes the power consumption of a permanently attached peripheral
if the hub is configured as a compound device, and the embedded peripheral reports
0mA in its descriptors.
The USB2.0 Specification does not permit this value to exceed 100mA.
Table 3.3 Hub Configuration (continued)
DATASHEET
DESCRIPTION
24
USB 2.0 Hub and 10/100 Ethernet Controller
SMSC LAN9514/LAN9514i
DEFAULT
00h
00h
01h
00h
Datasheet

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