307013-003 Datasheet, PDF (63/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Signal Description
2.11 USB Interface
Table 2-11. USB Interface Signals
Name
Type
Description
USBP0P,
USBP0N,
USBP1P,
USBP1N
USBP2P,
USBP2N,
USBP3P,
USBP3N
USBP4P,
USBP4N,
USBP5P,
USBP5N
USBP6P,
USBP6N,
USBP7P,
USBP7N
OC[4:0]#
OC5# / GPIO29
OC6# / GPIO30
OC7# / GPIO31
USBRBIAS
USBRBIAS#
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.
I/O
NOTE: No external resistors are required on these signals. The
Intel^® ICH7 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
I/O ^controller.
NOTE: No external resistors are required on these signals. The ICH7
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
I/O ^controller.
NOTE: No external resistors are required on these signals. The ICH7
integrates 15 kΩ pull-downs and provides an output driver
impedance of 45 Ω which requires no external series resistor
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
I/O ^controller.
NOTE: No external resistors are required on these signals. The ICH7
integrates 15 kΩ pull-downs and provides an output driver
impedance of 45 Ω which requires no external series resistor
Overcurrent Indicators: These signals set corresponding bits in
the USB controllers to indicate that an overcurrent condition has
occurred.
I _{OC[7:5]# may optionally be used as GPIOs.}
NOTE: OC[7:0]# are not 5 V tolerant.
O
USB Resistor Bias: Analog connection point for an external resistor.
Used to set transmit currents and internal load resistors.
USB Resistor Bias Complement: Analog connection point for an
I external resistor. Used to set transmit currents and internal load
resistors.
Intel ^® ICH7 Family Datasheet
63