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3.3
Power-over-Coax Interface
The DS90UB95x-Q1EVM offers two Power-over-Coax interfaces (PoC) to connect cameras through a
coaxial cable with FAKRA connectors. Power is delivered on the same conductor that is used to transmit
video and control channel data between the host and the camera. By default, 5V power supply is applied
over the coax cable. Refer to for other PoC configurations.
NOTE: For port RX0, the PoC network is configured for a DS90UB953-Q1EVM (or variant), and for
RX1 the PoC network is configured for a DS90UB933-Q1. Only use a serializer EVM with the
correct PoC network. To use PoC with two DS90UB953-Q1EVM (or variant) or DS90UB933-
Q1 EVM's, one of the PoC networks must be reworked. You may also open the PoC circuit
and power the serializer EVM directly from another supply.
For Power-over-Coax (PoC) on the EVM, the circuit uses a filter network as shown in
network frequency response corresponds to the bandwidth compatible with DS90UB953-Q1EVM (or
variant) chipsets.
Figure 5. Power-over-Coax Network For Use With DS90UB953
SNLU223A – August 2017 – Revised May 2019
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Copyright © 2017–2019, Texas Instruments Incorporated
DS90UB95x-Q1EVM Board Configuration
Figure
DS90UB95x-Q1EVM Deserializer User's Guide
6. The PoC
7
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