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EN 52
7.
Q552.1L LA
7.5
HDMI
In this platform, the Silicon Image Sil9x87 HDMI multiplexer is
implemented. Refer to figure
the application.
New in this platform is the implementation of the Audio Return
Channel (ARC) (pin 14 on HDMI 1). The ARC in HDMI1.4
enables a TV, via a single HDMI cable, to send audio data
"upstream" to an A/V receiver or surround audio controller,
increasing user flexibility and eliminating the need for any
separate SPDIF audio connection.
Figure 7-8 HDMI input configuration
The following multiplexers can be used:
•
Sil9187A (does not support "Instaport" technology for fast
switching between input signals)
•
Sil9287B (supports "Instaport" technology for fast
switching between input signals).
The hardware default I
•
Sil9187A: 0xB0/0xB2 (random: software workaround)
•
Sil9287B: 0xB2 (fixed).
The Sil9x87 has the following specifications:
•
+5V detection mechanism
•
Stable clock detection mechanism
•
Integrated EDID
•
RT control
•
HPD control
•
Sync detection
•
TMDS output control
•
CEC control
•
EDID stored in Sil9x87, therefore there are no EDID pins
on the SSB.
7.6
Video and Audio Processing - PNX85500
The PNX85500 is the main audio and video processor (or
System-on-Chip) for this platform. It has the following features:
•
Multi-standard digital video decoder (MPEG-2, H.264,
MPEG-4)
•
Integrated DVB-T/DVB-C channel decoder
•
Integrated CI+
•
Integrated motion accurate picture processing (MAPP2)
•
High definition ME/MC
•
2D LED backlight dimming option
2010-Dec-29
Circuit Descriptions
7-8 HDMI input configuration
18770_243_100203.eps
2
C addresses are:
•
Embedded HDMI HDCP keys
•
Extended color gamut and color booster
•
Integrated USB2.0 host controller
•
Improved MPEG artefact reduction compared with
for
PNX8543
•
Security for customers own code/settings (secure flash).
The TV550 combines front-end video processing functions,
such as DVB-T channel decoding, MPEG-2/H.264 decode,
analogue video decode and HDMI reception, with advanced
back-end video picture improvements. It also includes next
generation Motion Accurate Picture Processing (MAPP2). The
MAPP2 technology provides state-of-the-art motion artifact
reduction with movie judder cancellation, motion sharpness
and vivid color management. High flat panel screen resolutions
and refresh rates are supported with formats including 1366 ×
768 @ 100Hz/120Hz and 1920 × 1080 @ 100Hz/120Hz. The
combination of Ethernet, CI+ and H.264 supports new TV
experiences with IPTV and VOD. On top of that, optional
support is available for 2D dimming in combination with LED
backlights for optimum contrast and power savings up to 50%.
For a functional diagram of the PNX85500, refer
to
Figure
100203
back to
div. table
7-9.
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