这个设计范例使用 DE2-115 上的 VGA 输出、音频编解码芯片以及 TV 解码芯片（ U6）播放 来自 DVD 播放器输出的视频和音频信号。 图 6-1 给出了设计的原理框图。系统主要由两个 模块组成，它们是 I2C_AV_Config 以及 TV_to_VGA 模块。 TV_to_VGA 模块由 ITU-R 656 解 码器， SDRAM 帧缓冲器， YUV422 转 YUV444， YcrCb 转 RGB 以及 VGA 控制器组成。 从 图中还可以看出，设计使用了 TV 解码芯片 ADV7180 和 VGA DAC 芯片 ADV7123。

DE2_115_TV
..........\.metadata
..........\.........\.lock
..........\.........\.log
..........\.........\.plugins
..........\.........\........\org.eclipse.cdt.core
..........\.........\........\....................\.log
..........\.........\........\org.eclipse.cdt.make.core
..........\.........\........\.........................\specs.c
..........\.........\........\.........................\specs.cpp
..........\.........\........\org.eclipse.cdt.make.ui
..........\.........\........\.......................\dialog_settings.xml
..........\.........\........\org.eclipse.core.resources
..........\.........\........\..........................\.projects
..........\.........\........\..........................\.root
..........\.........\........\..........................\.....\.indexes
..........\.........\........\..........................\.....\........\history.version
..........\.........\........\..........................\.....\........\properties.index
..........\.........\........\..........................\.....\........\properties.version
..........\.........\........\..........................\.....\2.tree
..........\.........\........\..........................\.safetable
..........\.........\........\..........................\..........\org.eclipse.core.resources
..........\.........\........\org.eclipse.core.runtime
..........\.........\........\........................\.settings
..........\.........\........\........................\.........\org.eclipse.cdt.debug.core.prefs
..........\.........\........\........................\.........\org.eclipse.cdt.ui.prefs
..........\.........\........\........................\.........\org.eclipse.core.resources.prefs
..........\.........\........\........................\.........\org.eclipse.ui.ide.prefs
..........\.........\........\........................\.........\org.eclipse.ui.prefs
..........\.........\........\org.eclipse.debug.core
..........\.........\........\org.eclipse.debug.ui
..........\.........\........\org.eclipse.ui.ide
..........\.........\........\..................\dialog_settings.xml
..........\.........\........\org.eclipse.ui.workbench
..........\.........\........\........................\dialog_settings.xml
..........\.........\........\........................\workbench.xml
..........\.........\version.ini
..........\AUDIO_DAC.v
..........\db
..........\..\add_sub_7pc.tdf
..........\..\add_sub_8pc.tdf
..........\..\altsyncram_0v14.tdf
..........\..\altsyncram_eu14.tdf
..........\..\altsyncram_gr14.tdf
..........\..\altsyncram_gu14.tdf
..........\..\altsyncram_iu14.tdf
..........\..\altsyncram_mf51.tdf
..........\..\altsyncram_n7d1.tdf
..........\..\alt_synch_pipe_qld.tdf
..........\..\alt_synch_pipe_rld.tdf
..........\..\alt_u_div_b6g.tdf
..........\..\a_gray2bin_6ib.tdf
..........\..\a_graycounter_1lc.tdf
..........\..\a_graycounter_577.tdf
..........\..\cmpr_7ic.tdf
..........\..\cmpr_n76.tdf
..........\..\cmpr_ngc.tdf
..........\..\cmpr_qgc.tdf
..........\..\cmpr_rgc.tdf
..........\..\cmpr_tgc.tdf
..........\..\cntr_23j.tdf
..........\..\cntr_3uf.tdf
..........\..\cntr_egi.tdf
..........\..\cntr_fgi.tdf
..........\..\cntr_i6j.tdf
..........\..\cntr_igi.tdf
..........\..\cntr_jgi.tdf
..........\..\cntr_pdh.tdf
..........\..\cntr_rgi.tdf
..........\..\cntr_vei.tdf
..........\..\dcfifo_k5m1.tdf
..........\..\DE2_115_TV.1.cmp.rdb
..........\..\DE2_115_TV.2.cmp.rdb
..........\..\DE2_115_TV.amm.cdb
..........\..\DE2_115_TV.asm.qmsg
..........\..\DE2_115_TV.asm.rdb
..........\..\DE2_115_TV.asm_labs.ddb
..........\..\DE2_115_TV.autoh_e4eb1.qmsg
..........\..\DE2_115_TV.autos_3e921.qmsg
..........\..\DE2_115_TV.cbx.xml
..........\..\DE2_115_TV.cmp.bpm
..........\..\DE2_115_TV.cmp.cdb
..........\..\DE2_115_TV.cmp.hdb
..........\..\DE2_115_TV.cmp.kpt
..........\..\DE2_115_TV.cmp.logdb
..........\..\DE2_115_TV.cmp.rdb
..........\..\DE2_115_TV.cmp_merge.kpt
..........\..\DE2_115_TV.cycloneive_io_sim_cache.45um_ff_1200mv_0c_fast.hsd
..........\..\DE2_115_TV.cycloneive_io_sim_cache.45um_ii_1200mv_0c_slow.hsd
..........\..\DE2_115_TV.cycloneive_

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