LAN9514_12 Datasheet, PDF (25/52 Pages) SMSC Corporation – USB 2.0 Hub and 10/100 Ethernet Controller

USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
Table 3.3 Hub Configuration (continued)
EEPROM
OFFSET
DESCRIPTION
DEFAULT
29h
Non-Removable Devices Register (NRD)
02h
Indicates which port(s) include non-removable devices.
0 = Port is removable
1 = Port is non-removable
Informs the host if one of the active ports has a permanent device that is not
detachable from the Hub.
Note: The device must provide its own descriptor data.
Bit 7 = RESERVED
Bit 6 = RESERVED
Bit 5 = 1; Port 5 non-removable
Bit 4 = 1; Port 4 non-removable
Bit 3 = 1; Port 3 non-removable
Bit 2 = 1; Port 2 non-removable
Bit 1 = 1; Port 1 non-removable
Bit 0 is RESERVED, always = 0b
Note: Bit 1 must be set to 1 by firmware for proper identification of the Ethernet
Controller as a non-removable device.
2Ah
Port Disable (Self) Register (PDS)
00h
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
2Bh
Port Disable (Bus) Register (PDB)
00h
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
SMSC LAN9514/LAN9514i
25
DATASHEET
Revision 1.2 (02-29-12)