743844-015.pdf - 第148页
Functional Description OPI operates at 4 GT/s bus r ate. 8.2.2 R Intel ® Core ™ , Xeon ™ 6300 And Xeon ™ E 2400 Processors—Direct Media Interface and On Package Interface 13 th Generation Intel ® Core ™ , Intel ® Core ™ …
8.0 Direct Media Interface and On Package Interface
Direct Media Interface (DMI)
NOTE
The DMI interface is only present in 2-Chip platform processors.
Direct Media Interface (DMI) connects the processor and the PCH.
The main characteristics are as follows:
• 8 lanes Gen 4 DMI support
• 4 lanes Gen 4 Reduced DMI support
• 16 GT/s point-to-point DMI interface to PCH
• DC coupling - no capacitors between the processor and the PCH
• PCH end-to-end lane reversal across the link
• L0 (Active) and L1 (Low power) states support
• Half-Swing support (low-power/low-voltage)
DMI Error Flow
DMI can only generate SERR in response to errors; never SCI, SMI, MSI, PCI INT, or
GPE. Any DMI related SERR activity is associated with Device 0.
DMI Link Down
The DMI link going down is a fatal, unrecoverable error. If the DMI data link goes to
data link down, after the link was up, then the DMI link hangs the system by not
allowing the link to retrain to prevent data corruption. This link behavior is controlled
by the PCH.
Downstream transactions that had been successfully transmitted across the link prior
to the link going down may be processed as normal. No completions from
downstream, non-posted transactions are returned upstream over the DMI link after a
link down event.
On Package Interface (OPI)
OPI Support
The processor communicates with the PCIe using an internal interconnect BUS named
OPI.
8.1
8.1.1
8.1.2
8.2
8.2.1
R
Direct Media Interface and On Package Interface—Intel
®
Core
™
, Xeon
™
6300 And Xeon
™
E 2400
Processors
13
th
Generation Intel
®
Core
™
, Intel
®
Core
™
14
th
Generation, Intel
®
Core
™
Processor (Series 1) and (Series 2), Intel
®
Xeon
™
E
2400 Processor and Intel
®
Xeon
™
6300 Processor
May 2025 Datasheet, Volume 1 of 2
Doc. No.: 743844, Rev.: 015 147
Functional Description
OPI operates at 4 GT/s bus rate.
8.2.2
R
Intel
®
Core
™
, Xeon
™
6300 And Xeon
™
E 2400 Processors—Direct Media Interface and On
Package Interface
13
th
Generation Intel
®
Core
™
, Intel
®
Core
™
14
th
Generation, Intel
®
Core
™
Processor (Series 1) and (Series 2), Intel
®
Xeon
™
E
2400 Processor and Intel
®
Xeon
™
6300 Processor
Datasheet, Volume 1 of 2 May 2025
148 Doc. No.: 743844, Rev.: 015
9.0 Graphics
Processor Graphics
The processor graphics is based on X
e
graphics core architecture that enables
substantial gains in performance and lower-power consumption over prior generations.
X
e
architecture supports up to 96 Execution Units (EUs) depending on the processor
SKU.
The processor graphics architecture delivers high dynamic range of scaling to address
segments spanning low power to high power, increased performance per watt, support
for next generation of APIs. X
e
scalable architecture is partitioned by usage domains
along Render/Geometry, Media, and Display. The architecture also delivers very low-
power video playback and next generation analytics and filters for imaging related
applications. The new Graphics Architecture includes 3D compute elements, Multi-
format HW assisted decode/encode pipeline, and Mid-Level Cache (MLC) for superior
high definition playback, video quality, and improved 3D performance and media.
Media Support (Intel
®
QuickSync and Clear Video Technology
HD)
X
e
implements multiple media video codecs in hardware as well as a rich set of image
processing algorithms.
NOTE
HEVC and VP9 support additional 10bpc, YCbCr 4:2:2 or 4:4:4 profiles. Refer
additional detail support matrix.
Hardware Accelerated Video Decode
X
e
implements a high-performance and low-power HW acceleration for video decoding
operations for multiple video codecs.
The HW decode is exposed by the graphics driver using the following APIs:
• Direct3D* 9 Video API (DXVA2)
• Direct3D11 Video API
• Direct3D12 Video API
• Intel Media SDK
• MFT (Media Foundation Transform) filters.
• Intel VA API
X
e
supports full HW accelerated video decoding for AVC/HEVC/VP9/JPEG/AV1.
9.1
9.1.1
9.1.1.1
R
Graphics—Intel
®
Core
™
, Xeon
™
6300 And Xeon
™
E 2400 Processors
13
th
Generation Intel
®
Core
™
, Intel
®
Core
™
14
th
Generation, Intel
®
Core
™
Processor (Series 1) and (Series 2), Intel
®
Xeon
™
E
2400 Processor and Intel
®
Xeon
™
6300 Processor
May 2025 Datasheet, Volume 1 of 2
Doc. No.: 743844, Rev.: 015 149