Sharp LC-32LE631E Service Manual page 72

LC-32LE631
LC-40LE631
LC-46LE631
Circuit Descriptions (continued)
Figure 7-6 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.
7.7 Video and Audio Processing - PNX855xx
The PNX855xx 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
• Embedded HDMI HDCP keys
• Extended colour gamut and colour booster
• Integrated USB2.0 host controller
• Improved MPEG artefact reduction compared with
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,
analog 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
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and vivid colour 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 PNX855xx, refer
to Figure 7-7.
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