參數(shù)資料
型號(hào)： L64222
廠商： LSI CORP
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP208
封裝： PLASTIC, QFP-208
文件頁(yè)數(shù)： 29/32頁(yè)
文件大小： 248K
代理商： L64222
6
L64222 DVD Audio/Video Decoder
NTSC or PAL timing. In addition, the lters provide the capability to pan
and scan the MPEG image to 1/8-pixel accuracy. The L64222 also
supports letterbox display format with an integrated vertical lter for 1/2
and 3/4 decimation.
Graphics
The L64222 integrates an on-screen display (OSD) controller capable of
overlaying an image up to 720 x 480 pixels (720 x 576 for PAL), at up to
8 bits/pixel, on top of an MPEG video sequence while it is being
decoded. In addition, the L64222 contains an on-chip Subpicture Unit
(SPU) decoder for cost-effective integration of the graphics function. The
SPU decodes the bit map for graphic overlay and executes SPU
instructions so the graphic display can be changed on the y without
CPU intervention.
Video Output
The L64222 provides analog video in composite, RGB, YUV, or S-video
format, selectable by host register. The L64222 supports a number of
trick modes specic to the needs of DVD systems, including freeze
frame, skip B pictures, skip B and P pictures, and search for GOP.
Audio Decoding and Formatting
The Audio Decoder module contains:
108 MIPS of audio processing power.
programmable modules for the decoder.
a dedicated, programmable postprocessor.
an optional, 2-channel, audio DAC.
an IEC61937 formatter.
an IEC60958 encoder.
Virtually any audio format can be handled by downloading supporting
software. The L64222 has an interface for an external audio DAC and an
S/P DIF (IEC60958) Interface. The decoder and DAC Interface can
provide up to eight channels of audio including a stereo pair downmixed
from the other channels. The audio decoder uses the same external
memory device as the video decoder for its channel buffers. The host
controls the mode of the Audio Decoder module; that is, it downloads the
software.
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