MLP Report

the control must either retain the previous value or take the
value of 00, which will select the default native audio packet
type.
windows 7 Win7: UAA
Test - Win7
(System)
03/31/2012 Filter
4119
Contingencies
Issue Description:
Specific codecs do not correctly support Input Enable
and Output Enable pin widget controls. This results in an
attempt to shut off the pin, and it doesn't shut off. The
Microsoft audio class driver has other ways of making
sure the pins don't make sound, which happen to work
for these specific codecs.
windows 7
Win7:Class
Driver AC3
Test - Win7
(System)
06/30/2025
1256
Erratum
Issue Description:
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
Win7: Class
Drive Fidelity
Test - Win7
(System,
Manual)
7/31/2015
598
Erratum
Issue Description:
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.
Test Notes
Operating System
Test
Description
Windows 7
BIOS
download
Internal: http://bios.intel.com/downloads/
External: http://www.intel.com/ click on Support and Download
Windows 7
BIOS setup Please make sure the BIOS setting are as below, otherwise use default
settings.
System Date and Time: Current date and time