USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
Table 3.3 Hub Configuration (continued)
EEPROM
OFFSET
DESCRIPTION
DEFAULT
38h
Port Remap 5 Register (PRTR5)
05h
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) bit in Config Data Byte 3 Register (CFG3)
Format) the hub’s downstream port numbers can be remapped to different logical port
numbers (assigned by the host).
Note:
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.
Bit [7:4] =
Bit [3:0] =
-
RESERVED
0000
0001
0010
0011
0100
0101
Physical Port 5 is Disabled
Physical Port 5 is mapped to Logical Port 1
Physical Port 5 is mapped to Logical Port 2
Physical Port 5 is mapped to Logical Port 3
Physical Port 5 is mapped to Logical Port 4
Physical Port 5 is mapped to Logical Port 5
All others RESERVED
39h
Status/Command Register (STCD)
Refer to Table 3.10, “Status/Command Register (STCD) Format,” on page 32 for
details.
01h
Note 3.1 Default value is dependent on device revision.
Revision 1.0 (11-24-09)
SMSC LAN9514/LAN9514i
DATA2S8HEET
SMSC [ SMSC CORPORATION ]
