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AK8825 Datasheet(PDF) 1 Page - Asahi Kasei Microsystems |
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AK8825 Datasheet(HTML) 1 Page - Asahi Kasei Microsystems |
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1 / 162 page  [AK8825] Rev-E-00 1 2008/03 General Description The AK8825 is a HD/SD TV Video Encoder with onchip 3-channel 10bit DAC. As input data, in SDTV encoder mode, SMTE-125M / ITUR-R.BT601, 656 compatible Y/Cb/Cr 4:2:2 formats (8bit) are accepted and in HDTV encoder mode, SMPTE-274M (1080i), SMPTE296M (720p) compatible Y/Cb/Cr 4:2:2 formats (8bit x 2) are accepted. As input data capture method, either a Synchronous mode to be made by detecting encoded EAV signal or a mode to synchronize with externally-fed H/V SYNC signal is selectable. Outputs of CVBS / SDY / SDC and HDY / HDPB / HDPR and R / G / B analog signal can be output exclusively. VBI signal and Macrovision signal can be also superimposed on output in addition to Video signals by register setting. AK8825 supports I2C compatible interface as Micro-Processor interface. Features Component Video Encoder - Compatible Input Data SMPTE125M-1995 / ITU-R BT601 (525i/625i) SMPTE293M-1996 / ITU-R BT1358 (525p/625p) SMPTE274M-1998 (1080i) SMPTE296M-2001 (720p) - Input Signal Format (525i / 625i, 525p / 625p, 1080i, 720P) Y/Cb/Cr 4:2:2 (8bit x 1: 525i/625i) Y/Cb/Cr 4:2:2 (8bit x 2: 525p/625p/1080i/720p) RGB 6:6:6 RGB 5:6:5 - Input Clock 27MHz (525i / 625i / 525p / 625p) / 74.25MHz (1080i/720p) - Output Signals Y/Pb/Pr Interlace Y/Pb/Pr Progressive (EIA 770.2, EAI 770.3) - Input Signal Synchronization ITU-R.BT 656 I/F (EAV Decode) Slave operation by HSYNC / VSYNC (525i: ITU-R. BT601 Compatible 625i / 525p / 625p / 1080i / 720p; CEA-861-D Compatible) - VBID (CGMS-A), CC/XDS, WSS, CEA-805-B (Type A/B) - Macrovision 525i / 625i Rev.7.1.1L, 525p/625p Macrovision Progressive 1.2 - Internal Color bar Generator - Internal Black Burst Generator - Adjustable Y / Pb / Pr Delay Function NTSC / PAL Composite Video Encoder - NTSC-M, PAL-B, D, G, H, I. M, N Encoding - Composite Video Output / S-Video Output - Compatible Input Data SMPTE125M-1995 / ITU-R BT601(525i/625i) Y/Cb/Cr 4:2:2 (8bit x 1) RGB 6:6:6 RGB 5:6:5 - Input Signal Synchronization ITU-R.BT 656 I/F (EAV Decode) Slave operation by HSYNC / VSYNC ( 525i / 625i: ITU-R. BT601 Compatible) - Input Clock 27MHz - VBID(CGMS-A), CC/XDS, WSS - Macrovision Rev. 7.1.L AK8825 HD/SD Multi Format Video Encoder with 3ch DAC |
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