DS90UH925Q Datasheet, PDF (21/47 Pages) Texas Instruments – 720p 24-bit Color FPD-Link III Serializer with HDCP

DS90UH925Q
packetized audio data during video blanking intervals. A separate I2S audio interface may optionally be used to send I2S audio
data between the HDCP Receiver and HDCP Transmitter in place of using the packetized audio over the parallel LVCMOS interface.
All audio and video data is decrypted at the output of the HDCP Receiver and is re-encrypted by the HDCP Transmitter.
Figure 13 provides more detailed block diagram of a 1:2 HDCP repeater configuration.
FIGURE 13. HDCP 1:2 Repeater Configuration
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Repeater Connections
The HDCP Repeater requires the following connections between the HDCP Receiver and each HDCP Transmitter Figure 14.
1) Video Data – Connect PCLK, RGB and control signals (DE, VS, HS).
2) I2C – Connect SCL and SDA signals. Both signals should be pulled up to V_DD33 with 4.7 kΩ resistors.
3) Audio – Connect I2S_CLK, I2S_WC, and I2S_DA signals.
4) IDx pin – Each HDCP Transmitter and Receiver must have an unique I2C address.
5) MODE_SEL pin – All HDCP Transmitter and Receiver must be set into the Repeater Mode.
6) Interrupt pin – Connect DS90UH926Q INTB_IN pin to DS90UH925Q INTB pin. The signal must be pulled up to V_DDIO.
FIGURE 14. HDCP Repeater Connection Diagram
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