PLMP Report

Errata and Contingencies
Operating System
Failing Test
Expiry
Date
ID
Number
Type
Error Description
Windows 7
Windows 7 64-bit
UAA Test -
Vista or
Server08
(System)
8/9/2010
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 7
Windows 7 64-bit
UAA Test -
Vista or
Server08
(System)
1/31/2011
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.
Windows 7
Windows 7 64-bit
UAA Test -
Vista or
Server08
(System)
7/1/2011
1466
Erratum
Preview Filter: UAA Test - Intel Low Power DCN says "EPSS implies
KeepAlive, but only after July 1st 2011"
Windows 7
Windows 7 64-bit
UAA Test -
Vista or
Server08
(System)
9/30/2010
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 7
Windows 7 64-bit
UAA Test -
Vista or
Server08
(System)
6/30/2010
1299
Erratum
Preview filter - Jack Detect Override on digital pin widgets Errata
1299 The HD Audio configuration default register (7.3.3.31 in the HD
Audio specification) includes a "Jack Detect Override" flag that can be
used to indicate that although a pin widget would normally be
capable of jack detection, there is something about this particular
system that causes this to be impossible. This was intended to be
used, for example, for analog pin widgets that are connected to RCA
jacks, which do not allow for impedance detection. Some digital pin
widgets are using the Presence Detect pin sense response to indicate
that a digital handshake has occured - indeed, HDMI pins have entire
DCNs built around this concept, and it applies equally well to S/PDIF
pins. A digital converter that supports presence detection should be
able to do so in any system, so the "Jack Detect Override" concept
should not apply to digital pins.
Windows 7
Windows 7 64-bit
UAA Test -
Vista or
Server08
(System)
6/1/2015
513
Erratum
UAA Test requires the Traffic Priority bit to be read/write - however
there are two specs that apply, and they conflict. One says the bit
must be read/write, the other says it must be read-only. Contact has
been made with the author of both specs (Intel) but until this point is
clarified we cannot fail submissions containing this test failure.
Windows 7
Windows 7 64-bit
Class Driver
AC3 Test -
Win7 (System)
6/30/2025
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.