Getac 9270D Service Manual page 108

4.8 USB Interface Signals –Table 1
Name
USBP0P,
USBP0N,
USBP1P,
USBP1N
USBP2P,
USBP2N,
USBP3P,
USBP3N
USBP4P,
USBP4N,
USBP5P,
USBP5N
Type
Universal Serial Bus Port [1:0] Differential: These
differential pairs are used to transmit Data/Address/Command
signals for ports 0 and 1. These ports can be routed to UHCI
controller #1 or the EHCI controller #1.
I/O
NOTE: No external resistors are required on these signals. The
Ibex Peak integrates 15 kΩ pull-downs and provides an output
driver impedance of 45 Ω which requires no external series
resistor.
Universal Serial Bus Port [3:2] Differential: These
differential pairs are used to transmit data/address/command
signals for ports 2 and 3. These ports can be routed to UHCI
controller #2 or the EHCI controller #1.
I/O
NOTE: No external resistors are required on these signals. The
Ibex Peak integrates 15 kΩ pull-downs and provides an output
driver impedance of 45 Ω which requires no external series
resistor.
Universal Serial Bus Port [5:4] Differential: These
differential pairs are used to transmit Data/Address/Command
signals for ports 4 and 5. These ports can be routed to UHCI
controller #3 or the EHCI controller #1.
I/O
NOTE: No external resistors are required on these signals. The
Ibex Peak integrates 15 kΩ pull-downs and provides an output
driver impedance of 45 Ω which requires no external series
resistor.
Description