DS90UH926Q Datasheet, PDF (23/57 Pages) Texas Instruments – 720p 24-bit Color FPD-Link III Deserializer with HDCP

DS90UH926Q
HDCP
The Cipher function is implemented in the deserializer per HDCP v1.3 specification. It supports the HDCP key exchange for the
authentication over the back channel with the DS90UH925Q serializer. An on-chip Non-Volatile Memory (NVM) is used to store
the HDCP keys. The confidential HDCP keys are loaded by TI during the manufacturing process and are not accessible external
to the device.
The DS90UH926Q receives encrypted data and uses the Cipher engine to decrypt as per HDCP v1.3. Decrypted data is available
at the deserializer parallel output interface.
HDCP REPEATER
When DS90UH925Q and DS90UH926Q are configured as the HDCP Repeater application, it provides a mechanism to extend
HDCP transmission over multiple links to multiple display devices. This repeater application provides a mechanism to authenticate
all HDCP Receivers in the system and distribute protected content to the HDCP Receivers using the encryption mechanisms
provided in the HDCP specification.
Repeater Configuration
In HDCP repeater application, In this document, the DS90UH925Q is referred to as the HDCP Transmitter or transmit port (TX),
and the DS90UH926Q is referred to as the HDCP Receiver (RX). Figure 14 shows the maximum configuration supported for HDCP
Repeater implementations using the DS90UH925Q (TX) and DS90UH926Q (RX). Two levels of HDCP Repeaters are supported
with a maximum of three HDCP Transmitters per HDCP Receiver.
FIGURE 14. HDCP Maximum Repeater Application
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