TDA9984A datasheet(19/40 Pages) PHILIPS

19 / 40 page

TDA9984A_4

Product data sheet

Rev. 04 — 15 January 2009

19 of 40

NXP Semiconductors

TDA9984A

HDMI 1.3 transmitter with 1080p upscaler embedded

8.1.3 Synchronization

The TDA9984A can be synchronized with external input signals HSYNC and VSYNC or

with extraction of the sync information from embedded sync codes (SAV/EAV) inside the

video.

8.1.3.1

Timing extraction generator

This block can extract the synchronization signals HREF, VREF and FREF from SAV and

EAV in case of embedded synchronization in the data stream.

Synchronization signals can be embedded in YCbCr 4 :2:2 ITU656 (up to 1

× 12-bit)

and semi-planar (up to 2

× 12-bit).

8.1.3.2

Data enable generator

TDA9984A contains a Data Enable (DE) generator. This circuit generates an internal DE

signal for a system which does not provide one. The DE generator is controlled via the

I2C-bus register.

8.1.4 Input and output video format

Due to the ﬂexible video input formatter, the TDA9984A can accept a large range of inputs

formats. This ﬂexibility allows the TDA9984A to be compatible with the maximum number

of MPEG decoders. Moreover, these input formats may be changed in many ways (space

color converter, upsampler and scaler) to be transmitted across the HDMI link.

Table 14 gives the possible inputs and outputs.

8.1.5 Scaler unit

8.1.5.1

Scaler features

The scaler unit has the following features:

• Up-scaling only: to expand input image horizontally and vertically

• Deinterlacer embedded (no need of output memory)

• Data processing: 12-bit data width

Table 14.

Inputs and outputs capability

Input

Scaler

Output

Space color Format

Channels

Space color

Format

Channels

RGB

4:4:4

× 8-bit

no scaling

RGB

4:4:4

× 8-bit

YCbCr

4:4:4

× 8-bit

YCbCr

4:2:2

× 12-bit

YCbCr

4 : 4 : 4

× 8-bit

no scaling

RGB

4:4:4

× 8-bit

YCbCr

4:4:4

× 8-bit

YCbCr

4:2:2

× 12-bit

YCbCr

4 : 2 : 2

up to 1

× 12-bit

semi-planar

scaling

RGB

4:4:4

× 8-bit

YCbCr

4:4:4

× 8-bit

YCbCr

4:2:2

× 12-bit

up to 2

× 12-bit

semi-planar

scaling

RGB

4:4:4

× 8-bit

YCbCr

4:4:4

× 8-bit

YCbCr

4:2:2

× 12-bit

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