FW82371EBSL37M Intel, FW82371EBSL37M Datasheet - Page 33

• Manufacturer Part Number: FW82371EBSL37M
• Description: Embedded Processor 352-Pin BGA
• Manufacturer: Intel

Specifications of FW82371EBSL37M

• Package: 352BGA

21.
Problem:
Implication: The system time may not be correct after the daylight savings time change. The first manifestation
Workaround: 1. If using Microsoft* Windows* 95, Windows* 98 ,or Windows NT*4.0 operating systems, leave
Status:
22.
Problem:
Implication: USB devices may stall. The OS will attempt to recover, but if it fails to recover, an error message
Workaround: There are two available workarounds:
Status:
23.
Problem:
Implication: The implication is operating system dependent. It can range from additional latency on a resume
Specification Update
R
Daylight Savings Time
If the last Sunday in October is the 30th or 31st, and the daylight savings enable bit in the
PIIX4/PIIX4E/PIIX4M is set, the PIIX4/PIIX4E/PIIX4M will not correctly adjust the time back
one hour from 1:59:59 to 1:00:00am.
of this was on October 31, 1999.
2. After the daylight savings fallback occurs, change the time manually, using either an operating
3. Contact your system provider to see if there is a BIOS update available that corrects this
This will not be fixed in the PIIX4/PIIX4E/PIIX4M. It is planned to be corrected in future chipset
implementations.
USB Handshake
The PIIX4/PIIX4E/PIIX4M UHCI will fail to provide a handshake if it receives an incoming data
packet where the CRC has 5 consecutive 1s in the 5 least significant bits of CRC and is
immediately followed by an EOP for Bulk, Control, Interrupt and Isoc. Transfers only if a K-state
(remote wake from port specific selective suspend) is being signaled on the other port at the time of
the EOP. This behavior, to date, has only been observed during artificial testing procedures.
will be displayed. The user may have to unplug and re-install the USB device.
1. Do not use the port specific selective suspend feature of the PIIX4/PIIX4E/PIIX4M when there
2. Do not allow USB peripherals to use a remote wake feature (from selective suspend).
This will not be fixed in the PIIX4/PIIX4E/PIIX4M.
SE0 During Resume Causes Disconnect
A transient SE0 during an upstream resume signal from the USB peripheral to the
PIIX4/PIIX4E/PIIX4M while the system is in the S3/S4 sleep states will cause the
PIIX4/PIIX4E/PIIX4M to register a disconnect. This violates the USB Rev 1.1 specification.
before the USB device is functional (after the resume), to the USB device no longer works (after
the resume) – in which case a system reboot must be done to obtain functionality of that USB
device. In all cases the rest of the system does resume.
the system on and the operating system running at 1:59:59am on the last Sunday of October.
Some operating systems will correctly detect the time change and correct the
PIIX4/PIIX4E/PIIX4M’s CMOS time settings.
system date/time function, or the BIOS setup.
condition.
can be activity on the other port.
Intel
®
82371AB PIIX4, 82371EB PIIX4E, 82371MB PIIX4M
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