n80930hf Intel Corporation, n80930hf Datasheet - Page 37

• Manufacturer Part Number: n80930hf
• Description: Universal Serial Peripheral Controller
• Manufacturer: Intel Corporation

8.7 Unused Downstream Ports
If the USB downstream ports are not used, it is still
required that the two data lines be pulled low
externally (similar to a disconnect) so that the inputs
are not floating. This will eliminate the possibility of
induced system noise. When migrating from the
8 x 930HD/HE (3 external downstream port device)
to the 8 x 930HF/HG (4 external downstream port
device), and the additional USB port is not being
used in the application, D
15K external pulldown resistors. Do not leave the
unused port disconnected.
9.0 8 x 930H x ERRATA
The 8 x 930H x may contain design defects or errors
known as errata. Characterized errata that may
cause the 8 x 930H x ’s operational behavior to
deviate
documented in a specification update (order
number 272962). Specification updates can be
obtained from your local Intel sales office or from
the World Wide Web ( www.intel.com ).
ADVANCE INFORMATION
from
published
M5
and D
8 x 930H x UNIVERSAL SERIAL BUS PERIPHERAL CONTROLLER
specifications
P5
will still require
are
10.0 DATASHEET REVISION HISTORY
Datasheets are changed as new device information
becomes available. Verify with your local Intel sales
office that you have the latest version before
finalizing a design or ordering devices.
This (-003) revision of the 8 x 930H x datasheet
replaces earlier product information. The following
changes were made in this revision:
1. Added
downstream port device.
the
8 x 930HF/HG
4
external
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