MLP Report

Errata and Contingencies
Operating System Failing Test
Expiry
Date
ID
Number Type Error Description
Windows 7
Windows 7 64-bit
Class Driver
AC3 Test – Win
7 (System)
06/01/2010 1256
Erratum
Run AC3 test on a system with the Microsoft HD Audio class
driver installed. Expected results: All AC3 kernel streaming data
ranges should advertise MinimumBitsPerSample = 16 and
MaximumBitsPerSample = 16. Actual results: HD Audio class
driver sometimes advertises MaximumBitsPerSample = 24.
Windows 7
Windows 7 64-bit
1) Class Driver
Fidelity Test -
Win7 (System,
Manual)
2) Fidelity Test
- Win7 (System,
Manual)
12/31/2009 1238
Erratum
Fidelity test now enforces SYSFUND-0050 - pop/click
supporession is required to avoid noise during power state
transitions.
Windows 7
Windows 7 64-bit
Class Driver
Fidelity Test -
Win7 (System,
Manual)
12/1/2009 598
Erratum
The European Union requires the headphone output level to be
<= 150 mVrms for headphone jacks. There's a note in WLP
requirement AUDIO-0006 that states, in the presence of
regional regulations, the output level requirement for
headphones is dropped from >= 1000 mVrms to >= 120 mVrms.
This provides freedom for manufacturers to meet both the EU
<= 150 mVrms @ 32 Ohms and the WLP >= 120 mVrms @ 32
Ohms requirements. The Fidelity Test tests headphones at 300
Ohm load, though. Without knowledge of the output impedance
at the jack, the test cannot extrapolate what the output level at
32 Ohms would have been from the output level at 300 Ohms.
The test assumes that the output level at 32 Ohms will be
*less* than the output level at 300 Ohms, though. So any
measurement >= 120 mVrms at 300 Ohms "could be" a passing
result, depending on the output impedance.
Windows 7
Windows 7 64-bit
PCI Hardware
Compliance
Test For
Systems
12/31/2009 401
Erratum
The following PCI Compliance test failure is acceptable: Bit 15
(Bridge Configuration Retry Enable) in the Device Control
register (offset 8h) in the PCI Express Capability table must be
read-only and always return 0 as it is reserved for devices other
than PCI Express to PCI/PCI-X Bridges. Assertion 13A41D3E-
2576-41DC-A67C-525DA3637CEA This failure is acceptable
because this is a PCIe 1.1 feature and the WLP requires
compliance with only PCIe 1.0a.
Windows 7
Windows 7 64-bit
PCI Hardware
Compliance
Test For
Systems
12/31/2009 423
Erratum
Assertion 5CAF4993-B8D1-4E4E-99EC-CC5895364E32 Bit
range 11:10 (ASPM Support)in the Link Capabilities register
(offset Ch) in the PCI Express Capability table is 0h. It cannot be
in the set of values {0x0, 0x2}.
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.