4.8 USB Interface Signals –Table 2
Name
Type
Description
USBP6P,
USBP6N,
USBP7P,
USBP7N
I/O
Universal Serial Bus Port [7:6] Differential:
These
differential pairs are used to transmit Data/Address/Command
signals for ports 6 and 7. These ports can be routed to UHCI
controller #4 or the EHCI controller #2.
NOTE:
No external resistors are required on these signals. The
Ibex Peak integrates 15 k
Ω
pull-downs and provides an output
driver impedance of 45
Ω
which requires no external series
resistor.
USBP8P,
USBP8N,
USBP9P,
USBP9N
I/O
Universal Serial Bus Port [9:8] Differential:
These
differential pairs are used to transmit Data/Address/Command
signals for ports 8 and 9. These ports can be routed to UHCI
controller #5 or the EHCI controller #2.
NOTE:
No external resistors are required on these signals. The
Ibex Peak integrates 15 k
Ω
pull-downs and provides an output
driver impedance of 45
Ω
which requires no external series
resistor.
USBP10P,
USBP10N,
USBP11P,
USBP11N
I/O
Universal Serial Bus Port [11:10] Differential:
These
differential pairs are used to transmit Data/Address/Command
signals for ports 10 and 11. These ports can be routed to UHCI
controller #6 or the EHCI controller #2.
NOTE:
No external resistors are required on these signals. The
Ibex Peak integrates 15 k
Ω
pull-downs and provides an output
driver impedance of 45
Ω
which requires no external series
resistor.