AD9389 Ver la hoja de datos (PDF) - Analog Devices
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AD9389 Datasheet PDF : 48 Pages
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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
INPUT CLOCK-
RISING EDGE
INPUT DATA:
D(23:0), DE, SYNCS
tSETUP
tHOLD
tHOLD
tSETUP
tHOLD
AD9389
Figure 3. Timing for Data Input
Rev. 0 | Page 9 of 48
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