MLP Report

Windows 7
Windows 7 64-bit
Windows Vista
Windows Vista 64-bit
1) Class Driver
Fidelity Test -
Win7 (System,
Manual)
2) HDAudio
Class Driver
Fidelity Test-
Vista (System,
Manual)
3) Fidelity Test
(System,
Manual)
08/09/2010
1801
Erratum
There is a test bug which causes the measurement of system
noise during Render Power Transition Test to be about 3 dB
worse than it should be. This filter forgives errors up to 6 dB.
Windows Vista
Windows Vista 64-bit
Windows 7
Windows 7 64-bit
PCI Hardware
Compliance
Test For
Systems
06/01/2010
1241
Erratum
This happens because the PCI Compliance test assumes that if
the Data Link Layer Link Active Reporting Capable bit in the Link
Capabilities register for a given PCIe port is set then that
indicates that the Data Link Layer Link Active bit will also be set.
This is an incorrect assumption because the Data Link Link
Layer Link Active bit can be reset when there is no device
below the port. This assertion needs to be removed from the
PCIHCT. The current architecture of the PCIHCT prevents it from
knowing whether devices exist below a bridge/port.
Windows Vista
Windows Vista 64-bit
Windows 7
Windows 7 64-bit
1)UAA Test -
Win7 (System)
2)UAA Test –
Vista or
Server08
(System)
08/09/2010
1198
Erratum
"High Definition Audio Device" devices need to comply with the
Intel High Definition Audio spec, as well as revisions (known as
Document Change Notifications, or DCNs.) One such DCN - in
particular, DCN 34-A2 - clarified the behavior of "pin sense"
verbs as applied to digital pins (S/PDIF, HDMI, and DisplayPort.)
Prior to the DCN, the language of the spec was unclear and
mistakenly implied that the "Impedance" bits could be used by
digital pins. The DCN clarified this to say that Impedance bits are
reserved for digital pins.
Windows Vista
Windows Vista 64-bit
Windows 7
Windows 7 64-bit
1)UAA Test -
Win7 (System)
2)UAA Test –
Vista or
Server08
(System)
08/09/2010
1299
Erratum
The original HD Audio 1.0 specification contains a notion of
"presence detect", using electrical impedance which was
intended to apply only to analog pins. However, the language of
the specification was such that it could be read to apply to
digital pins as well - in particular, to S/PDIF pins. A DCN was
released to extend the notion of presence detect to digital pins
- in particular, to HDMI pins. This repurposed one of the
impedance bits, which were thought to be unused in digital pins,
to mean "ELD valid." The correct way for a S/PDIF pin to
respond to a Pin Sense verb is to set the highest bit (Presence
Detect) to 1 or 0 corresponding to whether a S/PDIF connection
is active; set the ELD Valid bit to 0 (since there is no such thing
as ELD for S/PDIF); and set the rest of the bits, which are
reserved for digital pins, to 0. This errata filter is a preview
filter to allow hardware manufacturers time to update any
hardware that used the impedance bits on digital pins.
Windows Vista
Windows Vista 64-bit
Windows 7
Windows 7 64-bit
1)UAA Test -
Win7 (System)
2)UAA Test –
Vista or
Server08
(System)
06/01/2010
1300
Erratum
HD Audio pin configuration document calls out setting Port
Connectivity to No Connection as the way to turn a pin off in a
particular system. UAA Test incorrectly tests such pins.