876784 Intel, 876784 Datasheet - Page 63

• Manufacturer Part Number: 876784
• Manufacturer: Intel

Specifications of 876784

• Lead Free Status / RoHS Status: Compliant

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