TDA9983B_1 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 01 — 20 May 2008 18 of 119
NXP Semiconductors
TDA9983B
150 MHz pixel rate HDMI transmitter
8.3 Synchronization
The TDA9983B 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.
8.3.1 Timing extraction generator
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, YC
B
C
R
4 : 4 : 4, YC
B
C
R
4:2:2 semi-planar (up to 2 × 12-bit), YC
B
C
R
4:2:2 ITU656 and ITU656-like (up to
1 × 12-bit).
8.3.2 Data enable generator
The TDA9983B contains a Data Enable (DE) generator; this can generate an internal DE
signal for a system which does not provide one.
8.4 Input and output video format
Due to the flexible video input formatter, the TDA9983B can accept a large range of input
formats. This flexibility allows the TDA9983B 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, downsampler and scaler) to be transmitted across the
HDMI link. Table 14 gives the possible inputs and outputs.
8.5 Upsampler
The incoming YC
B
C
R
4 : 2 : 2 (2 × 12-bit) data stream format could be upsampled into a
12-bit YC
B
C
R
4 : 4 : 4 (3 × 12-bit) data stream by repeating or linearly interpolating the
chrominance pixels.
Table 14. Use of color space converter, upsampler, downsampler and scaler
Input Scaler Output
Color space Format Channels Color space Format Channels
RGB 4:4:4 3× 8-bit no scaling RGB 4:4:4 3× 8-bit
no scaling YC
B
C
R
4:2:2 2× 12-bit
no scaling YC
B
C
R
4:4:4 3× 8-bit
YC
B
C
R
4:4:4 3× 8-bit no scaling RGB 4:4:4 3× 8-bit
no scaling YC
B
C
R
4:2:2 2× 12-bit
no scaling YC
B
C
R
4:4:4 3× 8-bit
YC
B
C
R
4 : 2 : 2 up to 1 × 12-bit scalable YC
B
C
R
4:2:2 2× 12-bit
scalable YC
B
C
R
4:4:4 3× 8-bit
scalable RGB 4:4:4 3× 8-bit
up to 2 × 12-bit scalable YC
B
C
R
4:2:2 2× 12-bit
scalable YC
B
C
R
4:4:4 3× 8-bit
scalable RGB 4:4:4 3× 8-bit
