
SMSC DS – LPC47M14X 
Page 170 
Rev. 03/19/2001 
NAME 
REG INDEX 
DEFINITION 
NOTES 
System 
Note 1 
System 
Note 1 
IdVendor_Low 
Default=0x24 
on VTR POR 
0xF1 
R/W 
Bit[7:0] USB Vendor ID (assigned by USB), low byte 
Default reset to SMSC ID 
IdVendor_High  
Default=0x04 
on VTR POR 
IdProduct_Low  
Default=40 
on VTR POR 
IdProduct_High  
Default=01 
on VTR POR 
BcdDevice_Low  
Default=0x00 
on VTR POR 
BcdDevice_High  
Default=0x00 
on VTR POR 
0xF2 
R/W 
Bit[7:0] USB Vendor ID (assigned by USB), high byte 
Default reset to SMSC ID 
0xF3 
R/W 
Bit[7:0] USB Product ID (assigned by manufacturer), low 
byte 
Default reset to SMSC silicon ID 
System 
Note 1 
0xF4 
R/W 
Bit[7:0] USB Product ID (assigned by manufacturer), 
high byte 
Default reset to SMSC silicon ID 
System 
Note 1 
0xF5 
R/W 
Bit[7:0] USB Device Release Number (in binary coded 
decimal), low byte 
Default set to SMSC silicon revision 
System 
Note 1 
0xF6 
R/W 
Bit[7:0] USB Device Release Number (in binary coded 
decimal), high byte 
Default set to SMSC silicon revision 
Bit[0] GangedPWR 
Bit[1:4] Reserved 
Bit[5:6] Strp[0:1] 
Bit[7] NhubReset 
Note:
 For a detailed description of HubControl_1 bits 
see Table 76 below. 
System 
Note 1 
HubControl_1 
Default=0x00 
on VTR POR 
0xF7 
R/W 
0xF8- 
0xFF 
Reserved – read as ‘0’ 
Note 1:
  This activate function is satisfied by NHubReset in the HubControl 1 Register defined below. 
System Note 1:
 Current Root Hub device identification is being implemented by using the Vendor ID (VID)
and Product ID (PID) from the hub vendor. Although this is not currently a Windows 2000 or 98 logo
requirement, Microsoft WHQL encourages system vendors to change the VID/PID combination for each of
their motherboards and USB hubs. Using the hub vendor's VID/PID (Default Value of the registers defined
above) combination becomes an issue if, in a future operating system release, WHQL finds a broken
implementation in the industry that must be disallowed. As result, all hubs using the same VID/PID
combination would be disallowed by the operating system. However, if each system vendor creates a
unique VID/PID combination, then only the disallowed implementation would be turned off.  
Therefore, it is recommended that each OEM modify / change the following register values, through BIOS,
for each motherboard design by modifying the following registers defined above: 
1) 
IdVendor_Low Default=0x24 
2) 
IdVendor_High Default=0x04 
3) 
IdProduct_Low  Default=0x40 
4) 
IdProduct_High  Default=0x01