TDA9981B NXP Semiconductors, TDA9981B Datasheet - Page 18

• Manufacturer Part Number: TDA9981B
• Description: HDMI transmitter up to 150 MHz pixel rate
• Manufacturer: NXP Semiconductors

www.DataSheet4U.com
NXP Semiconductors
TDA9981B_1
Product data sheet
8.3.1 Timing extraction generator
8.3.2 Data enable generator
8.3 Synchronization
8.4 Input and output video format
8.5 Upsampler
The TDA9981B can be synchronized with Hsync/Vsync external inputs or with extraction
of the sync information from embedded sync (SAV/EAV) codes inside the video stream.
This block can extract the synchronization signals Href, Vref and Fref from Start Active
Video (SAV) and End Active Video (EAV) in case of embedded synchronization in the data
stream. Synchronization signals can be embedded in RGB, YCbCr 4 : 4 : 4, YCbCr
4 : 2 : 2 semi-planar (up to 2
1
The TDA9981B contains a Data Enable (DE) generator; this can generate an internal DE
signal for a system which does not provide one.
Due to the flexible video input formatter, the TDA9981B can accept a large range of input
formats. This flexibility allows the TDA9981B to be compatible with the maximum possible
number of MPEG decoders. Moreover, these input formats may be changed in many ways
(color space converter, upsampler and downsampler) to be transmitted across the HDMI
link.
Table 14.
The incoming YCbCr 4 : 2 : 2 (2
12-bit YCbCr 4 : 4 : 4 (3
chrominance pixels.
Input
Color space
RGB
YCbCr
YCbCr
12-bit).
Table 14
Use of color space converter, upsampler and downsampler
gives the possible inputs and outputs.
Format
4 : 4 : 4
4 : 2 : 2
4 : 4 : 4
Rev. 01 — 4 July 2008
12-bit) data stream by repeating or linearly interpolating the
Channels
3
3
up to
1
up to
2
12-bit), YCbCr 4 : 2 : 2 ITU656 and ITU656-like (up to
8-bit
8-bit
12-bit
12-bit
12-bit) data stream format could be upsampled into a
Output
Color space
RGB
YCbCr
YCbCr
RGB
YCbCr
YCbCr
YCbCr
YCbCr
RGB
YCbCr
YCbCr
RGB
150 MHz pixel rate HDMI transmitter
Format
4 : 4 : 4
4 : 2 : 2
4 : 4 : 4
4 : 4 : 4
4 : 2 : 2
4 : 4 : 4
4 : 2 : 2
4 : 4 : 4
4 : 4 : 4
4 : 2 : 2
4 : 4 : 4
4 : 4 : 4
TDA9981B
© NXP B.V. 2008. All rights reserved.
Channels
3
2
3
3
2
3
2
3
3
2
3
3
8-bit
12-bit
8-bit
8-bit
12-bit
8-bit
12-bit
8-bit
8-bit
12-bit
8-bit
8-bit
18 of 41