GM5020 Datasheet, PDF (35/86 Pages) List of Unclassifed Manufacturers – Graphics Processing IC providing high-quality images for LCD monitors and other pixelated displays

Genesis Microchip
gm5020 / gm5020-H Data Sheet
Through register programming, the receiver unit may be placed in one of three states:
• Active: The receiver block is fully on and running.
• Standby: Only the RXC channel remains active. Data and other control signals are not
decoded.
• Off: The receiver block is powered down.
4.4.2 HDCP (High-Bandwidth Digital Content Protection System)
Note: This section refers only to the gm5020-H chip.
The HDCP system allows for authentication of a video receiver, decryption of encoded video
data at the receiver, and renew-ability of that authentication during transmission. The gm5020-H
implements circuitry to allow for authentication and decryption of video as specified by the
HDCP 1.0 protocol for DVI inputs.
For enhanced security, Genesis provides a means of storing and accessing the secret key given to
individual monitor units in an encrypted format.
Further details of the protocol and theory of the system can be found in the High-bandwidth
Digital Content Protection System specification, proposed by Intel Corporation.
February 2002
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C5020-DAT-01Q