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AD9389 Fiches technique(PDF) 9 Page - Analog Devices |
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AD9389 Fiches technique(HTML) 9 Page - Analog Devices |
9 / 48 page AD9389 Rev. 0 | Page 9 of 48 DESIGN GUIDE GENERAL DESCRIPTION The AD9389 HDMI transmitter provides a high bandwidth digital content protected (HDCP) digital link between a wide range of digital input formats—both audio and video (see Table 8) and output formats (see Table 9). Video and audio data are captured and prepared for transmission while two separate I2C buses (one of which is a master) are used to program and provide content protection for the data to be transmitted. VIDEO DATA CAPTURE The AD9389 can accept video data from as few as eight pins (YCbCr DDR) representing 8-bit data or as many as 24 pins representing 12-bit data. The AD9389 is capable of detecting all of the 34 video formats defined in the EIA/CEA-861B specification. If video ID (VID) 32, 33, or 34 is present, the user needs to set Register 0x15[0] to 0b1, as these modes have VREF frequencies of 30 Hz or less. The user can read the detected video format at 0x3E[7:2]. Formats outside the EIA/CEA-861B specification can be read in 0x3F[7:5]. Detailed line count differences for 240p and 288p modes can be read from 0x3F[4:3]. In order to distinguish between an aspect ratio of 4:3 and one of 16:9, 0x17[1] should be set accordingly. Table 8. Input Formats Supported No. of Bits Input Format 12 RGB (DDR) 12 YCbCr 4:4:4 (DDR) 24 RGB 4:4:4 24 YCbCr 4:4:4 16 YCbCr 4:2:2 (ITU.601) 20 YCbCr 4:2:2 (ITU.601) 24 YCbCr 4:2:2 (ITU.601) 8 YCbCr (DDR) 10 YCbCr (DDR) 12 YCbCr (DDR) 8 YCbCr 4:2:2 (ITU.656) 10 YCbCr 4:2:2 (ITU.656) 12 YCbCr 4:2:2 (ITU.656) Table 9. Output Formats Supported No. of Bits Output Format 24 RGB 4:4:4 24 YCbCr 4:4:4 16 YCbCr 4:2:2 20 YCbCr 4:2:2 24 YCbCr 4:2:2 INPUT FORMATS tSETUP tSETUP tHOLD tHOLD tHOLD INPUT DATA: D(23:0), DE, SYNCS INPUT CLOCK- RISING EDGE Figure 3. Timing for Data Input |
Numéro de pièce similaire - AD9389 |
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Description similaire - AD9389 |
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