USB2640I Standard Microsystems Corp., USB2640I Datasheet - Page 44

• Manufacturer Part Number: USB2640I
• Description: Industrial Temperature Usb 2.0 Flash Media Controller And Usb Hub Combo
• Manufacturer: Standard Microsystems Corp.

Industrial Temperature USB 2.0 Flash Media Controller and USB Hub Combo
7.3.3.30
F1h: Port Swap
BIT
NUMBER
BYTE NAME
DESCRIPTION
7:0
PRT_SWP
Port Swap: Swaps the Upstream and Downstream USB DP and DM Pins for
ease of board routing to devices and connectors.
‘0’ = USB D+ functionality is associated with the DP pin and D- functionality
is associated with the DM pin.
‘1’ = USB D+ functionality is associated with the DM pin and D- functionality
is associated with the DP pin.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= Reserved
Bit 3= ‘1’; Port 3 DP/DM is swapped
Bit 2= ‘1’; Port 2 DP/DM is swapped
Bit 1= Reserved
Bit 0= ‘1’:Upstream Port DP/DM is swapped
Revision 2.0 (10-03-08)
44
SMSC USB2640i/USB2641i
DATASHEET