USB Hub with Integrated 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] =

-

RESERVED

 

 

 

 

 

 

 

 

 

 

 

Bit [3:0] =

0000

Physical Port 5 is Disabled

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0001

Physical Port 5 is mapped to Logical Port 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0010

Physical Port 5 is mapped to Logical Port 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0011

Physical Port 5 is mapped to Logical Port 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0100

Physical Port 5 is mapped to Logical Port 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0101

Physical Port 5 is mapped to Logical Port 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All others RESERVED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

39h

 

Status/Command Register (STCD)

01h

 

 

Refer to Table 3.10, “Status/Command Register (STCD) Format,” on page 32 for

 

 

 

details.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note 3.1

Default value is dependent on device revision.

 

Revision 1.0 (04-20-09)

28

SMSC LAN9514

 

DATASHEET