4.2 Power Supply
Table 4-1. Power Supply
Reference
Signal
Description
J1/J3
+12V
Main Power
12VDC (nominal) power connector that supplies power to
the entire board.
4.3 Power-over-Coax Interface
The DS90UB954-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
. The PoC
network frequency response corresponds to the bandwidth compatible with DS90UB953-Q1EVM (or variant)
chipsets.
Figure 4-2. Power-over-Coax Network For Use With DS90UB953
DS90UB954-Q1EVM Board Configuration
8
DS90UB954-Q1EVM Deserializer User's Guide
SNLU223C – AUGUST 2017 – REVISED NOVEMBER 2022
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