LAN9514-JZX Standard Microsystems (SMSC), LAN9514-JZX Datasheet - Page 26

• Manufacturer Part Number: LAN9514-JZX
• Manufacturer: Standard Microsystems (SMSC)

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

Revision 1.0 (11-24-09)
EEPROM
OFFSET
36h
Port Remap 12 Register (PRTR12)
When a hub is enumerated by a USB Host Controller, the hub is only permitted to
report how many ports it has. The hub is not permitted to select a numerical range or
assignment. The Host Controller will number the downstream ports of the hub starting
with the number 1, up to the number of ports that the hub reported having.
The host’s port number is referred to as “Logical Port Number” and the physical port
on the hub is the “Physical Port Number”. When remapping mode is enabled, (see
Port Re-Mapping Enable (PRTMAP_EN)
Format) the hub’s downstream port numbers can be remapped to different logical port
numbers (assigned by the host).
Note:
Bit [7:4] =
Bit [3:0] =
The OEM must ensure that Contiguous Logical Port Numbers are used,
starting from #1 up to the maximum number of enabled ports. This ensures
that the hub’s ports are numbered in accordance with the way a Host will
communicate with the ports.
0000
0001
0010
0100
0101
0000
0001
0010
0100
0101
0011
0011
Table 3.3 Hub Configuration (continued)
Physical Port 2 is Disabled
Physical Port 2 is mapped to Logical Port 1
Physical Port 2 is mapped to Logical Port 2
Physical Port 2 is mapped to Logical Port 3
Physical Port 2 is mapped to Logical Port 4
Physical Port 2 is mapped to Logical Port 5
All others RESERVED
Physical Port 1 is Disabled
Physical Port 1 is mapped to Logical Port 1
Physical Port 1 is mapped to Logical Port 2
Physical Port 1 is mapped to Logical Port 3
Physical Port 1 is mapped to Logical Port 4
Physical Port 1 is mapped to Logical Port 5
All others RESERVED
DATASHEET
DESCRIPTION
bit in
26
Config Data Byte 3 Register (CFG3)
USB 2.0 Hub and 10/100 Ethernet Controller
SMSC LAN9514/LAN9514i
DEFAULT
21h
Datasheet