
4.5 FPD-Link III Signals
Table 4-4. FPD-Link III Signals
Reference
Signal
Description
RX0p
RIN0+
FAKRA connector for DS90UB953-Q1EVM (or variant) serializer
RX0n
RIN0-
FAKRA connector footprint for use with STP applications.
RX1
RIN1+
FAKRA connector for DS90UB933-Q1 serializer
4.6 I
2
C Interface
In addition to the on-board USB2ANY controller accessible via the mini-USB port, a standalone external I
2
C host
can connect via J25 for programming purposes. Examples of external I
2
C host controllers are Texas Instruments
USB2ANY and Total Phase Aardvark I
2
C/SPI host adapter (Total Phase Part#: TP240141).
When the I
2
C interface is accessed through connector J25, I
2
C signal levels can be configured through J16 to
be at 1.8V or 3.3V. Optional access to I
2
C signals are also available via CSI-2 connectors J24 (top) and J26
(bottom).
Table 4-5. IDx I
2
C Device Address Select - J23
Reference
Signal
Description
J23
IDX Select
Selects I
2
C Device Address
Open: 0x30 (7'b) or 0x60 (8'b)
Short: 0x3D (7'b) or 0x7A (8'b) (Default)
Table 4-6. I
2
C Interface Header - J25
Reference
Signal
Description
J25.1
GND
Ground
J25.2
I2C_SDA
I
2
C Data Interface for I
2
C bus
J25.3
I2C_SCL
I
2
C Clock Interface for I
2
C bus
J25.4
VDDIO
I
2
C bus voltage (tied to VDDIO)
DS90UB954-Q1EVM Board Configuration
SNLU223C – AUGUST 2017 – REVISED NOVEMBER 2022
DS90UB954-Q1EVM Deserializer User's Guide
11
Copyright © 2022 Texas Instruments Incorporated