PDF AK8826VN Data sheet ( Hoja de datos )

Número de pieza	AK8826VN
Descripción	HD-SD Multi Format Video Encoder
Fabricantes	AKM
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No Preview Available ! [AK8826VN] AK8826VN HD/SD Multi Format Video Encoder with 3ch DAC General Description The AK8826 is a HD/SD TV Video Encoder with onchip 3-channel 10bit DAC. As input data, in SDTV encoder mode, SMT E-125M / IT UR-R.BT601, 656 compat ible Y/Cb/Cr 4:2:2 formats (8bit) are accepted and in HDT V encoder mode, SMPT E-274M (1080i), SMPT E296M (720p) compatible Y/Cb/Cr 4:2:2 formats (8bit x 2) are accepted. As input data capture me thod, either a Sy nchronous 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 can be also superimposed on output in addition to Video signals by register setting. AK8826 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) SMPT E274M-1998 (1080i) SMPT E296M-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) - 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 MS0972-E-01 1 2008/12 http://www.Datasheet4U.com 1 page 1-2. NTSC/PAL Composite Video Encoder Block From Timing Generator Y[7:0 Cb[7:0] Cr[7:0] From Clock Gen SD-Timing Generator 13.5MHz x2 LPF-A Interpolation 4:2:2 to 4:4:4 27MHz 6.75MHz CGMS-A WSS SYNC Generator U LPF-B V cos sin 13.5MHz DFS C x2 LPF-C sin(x)/x sin(x)/x sin(x)/x 27MHz [AK8826VN] Y[9:0] to DAC CVBS[9:0] to DAC C[9:0] to DAC Fig. 3 Composite Video Encoder Block This Block described as Composite Video Encoder Block in this datasheet. 1-3 High Speed Video DAC mode AK8826 can be used as High Speed Video DAC. This mode is described as Video DAC mode in this datasheet. From CLKIN DATA[5:0] / DATA[4:0] DAC1 DATA[17:0] Data DATA[11:6] / DATA[10:5] Distributor Level Shifter Delay (unit CLK) DAC2 DATA[17:12] / DATA[15:11] DAC3 HDI Delay HDO VDI Delay VDO Fig. 4 High Speed Video ADC Block MS0972-E-01 5 2008/12 5 Page Pull Up / Down Pins Pin Name TEST0 TEST1 TMO Pull-up/Down Pull Down Pull Down Pull Down Pull-Up/Down Resistor Approx. 100k-ohm Approx. 100k-ohm Approx. 100k-ohm [AK8826VN] MS0972-E-01 11 2008/12 11 Page

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