DS90UB921-Q1 Datasheet, PDF (25/57 Pages) Texas Instruments – 5 - 96 MHz 24-bit Color FPD-Link III Serializer with Bidirectional Control Channel

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Device Functional Modes (continued)
Source
TX
1:3 Repeater
TX
RX
TX
TX
1:3 Repeater
TX
RX
TX
TX
1:3 Repeater
TX
RX
TX
DS90UB921-Q1
SNLS488 – MARCH 2016
RX
Display
RX
Display
RX
Display
RX
Display
RX
Display
TX
1:3 Repeater
TX
RX
TX
RX
Display
RX
Display
RX
Display
TX
RX
Display
Figure 19. Maximum Repeater Application
In a repeater application, the I2C interface at each TX and RX may be configured to transparently pass I2C
communications upstream or downstream to any I2C device within the system. This includes a mechanism for
assigning alternate IDs (Slave Aliases) to downstream devices in the case of duplicate addresses.
At each repeater node, the parallel LVCMOS interface fans out to up to three serializer devices, providing parallel
RGB video data, HS/VS/DE control signals and, optionally, packetized audio data (transported during video
blanking intervals). Alternatively, the I2S audio interface may be used to transport digital audio data between
receiver and transmitters in place of packetized audio. All audio and video data is transmitted at the output of the
Receiver and is received by the Transmitter.
Figure 20 provides more detailed block diagram of a 1:2 repeater configuration.
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