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TDA9983B Datasheet(PDF) 21 Page - NXP Semiconductors

Part # TDA9983B
Description  HDMI transmitter up to 150 MHz pixel rate with 3 쨈 8-bit video inputs and 4 쨈 I2S-bus with S/PDIF
PDF  119 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

TDA9983B Datasheet(HTML) 21 Page - NXP Semiconductors

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TDA9983B_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 20 May 2008
21 of 119
NXP Semiconductors
TDA9983B
150 MHz pixel rate HDMI transmitter
8.14 HDMI
8.14.1 Output HDMI buffers
An external resistor must be used to set the HDMI output amplitude. It has to be
connected between pin EXT_SWING and VDDH(3V3).
8.14.2 Pixel repetition
To transmit video formats with pixel rates below 25 Msample/s or to increase the number
of audio sample packets in each frame, the TDA9983B uses pixel repetition to increase
the transmitted pixel clock.
8.14.3 HDMI and DVI receiver discrimination
This information is located in the E-EDID receiver part, in the ‘Vendor-Specific Data block’
within the first CEA EDID timing extension. If the 24-bit IEEE registration identifier
contains the value 00 0C03h, then the receiver will support HDMI, otherwise the device
will be treated as a DVI device. However, the TDA9983B does not have direct access to
that information since E-EDID is read by an external microprocessor through the
TDA9983B I2C-bus gate.
8.14.4 DDC channel
The DDC-bus pins DDC_SDA and DDC_SCL are 5 V tolerant and can work at standard
mode (100 kHz).
8.14.4.1
E-EDID reading
In order to get receiver capabilities, the TDA9983B must read the E-EDID of the receiver.
This is made possible by temporarily connecting the I2C-bus to the DDC lines, so that the
microprocessor is able to read full EDID.
8.15 Scaler unit
The scaler unit has the following features:
• Upscaling only: to expand input image horizontally and vertically
Table 16.
Pixel repetition
SRL_PR[3]
SRL_PR[2]
SRL_PR[1]
SRL_PR[0]
Pixel repeated
0000no repetition
0001
once
0010
twice
00113 times
01004 times
01015 times
01106 times
01117 times
10008 times
10019 times
101x
undefined
1
1
x
x
undefined



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