STW8009 datasheet(20/66 Pages) STMICROELECTRONICS

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STw8009/STw8019

Functional description

19/65

4.9

Composite video signal generation

The composite video signal is created by adding the luminance and the chrominance

components. A saturation function is included in the adder to avoid overflow errors.

4.10

MacrovisionTM copy protection

The chrominance luminance and composite video signals and RGB video signals can be

altered according to the MacrovisionTM copy protection Revision 7.01 and Revision 6.1.

This process is controlled via the I²C bus. A programming document is available to those

customers who have executed a license or a non-disclosure agreement with Macrovision

Corporation.

For all relevant information or document please contact:

Macrovision Corporation:

2830 De La Cruz Blvd.

Santa Clara, CALIFORNIA 95050

USA

www.macrovision.com

4.11

TV/VCR plug insertion detection

Plugdet ball is used to detect the connection of a TV or a VCR. The host can read the status

in a dedicated register in standby and active modes.

4.12

DAC

STw80x9 outputs generate Composite video signal on one output or Y/C video signals on

two outputs.

Two embedded 10-bit DACs allow the STw80x9 to directly drive 37.5 Ohms loads on each

output.

4.13

Power management

Power management includes power supplies, reset signals, clock gating and a set of

dedicated pins and registers. Power management is used to set the STw80x9 in different

operating modes.

STW8009 Arkusz danych(PDF) 20 Page - STMicroelectronics