Functional Description
Figure 10-2. SDVO Conceptual Block Diagram
Analog RGB
Monitor
Control Clock
Control Data
TV Clock In
Stall
Interrupt
3rd Party
SDVO
External
Device(s)
Digital
Display
Device(s)
or TV
ClockC
RedC / AlphaB
GreenC
Internal
Graphics
BlueC
PCI
Express*
Logic
ClockB
RedB
GreenB
BlueB
GMCH
SDVO_BlkDia
10.3.2.2
Intel® SDVO Modes
The port can be dynamically configured in several modes:
•
Standard – This mode provides baseline SDVO functionality. It supports Pixel
Rates between 25 MP/s and 270 MP/s. It uses three data pairs to transfer RGB
data.
•
Extended – Adds Alpha support to data stream. This mode supports Pixel Rates
between 25 MP/s and 270 MP/s. The mode uses four data channels and is only
supported on SDVOB. Leverages channel C (SDVOC) Red pair as the Alpha pair for
channel B (SDVOB).
•
Dual Standard – This mode uses Standard data streams across both SDVOB and
SDVOC. Both channels can only run in Standard mode (3 data pairs) and each
channel supports Pixel Rates between 25 MP/s and 270 MP/s.
⎯
⎯
Dual Independent Standard - In Dual Independent Standard mode, each
SDVO channel sees a different pixel stream. The data stream across SDVOB will
not be the same as the data stream across SDVOC.
Dual Simultaneous Standard - In Dual Simultaneous Standard mode, both
SDVO channels sees the same pixel stream. The data stream across SDVOB will
be the same as the data stream across SDVOC. The display timings are identical,
but the transfer timings may not be (i.e., SDVOB clocks and data may not be
perfectly aligned with SDVOC clock and data as seen at the SDVO device(s)).
Since this mode uses just a single data stream, it uses a single pixel pipeline
within the GMCH.
Datasheet
293
INTEL [ INTEL ]
