Texas Instruments FPD Link III - DS90UB903Q & DS90UB904Q EVK SERDESUB-21USB/NOPB SERDESUB-21USB/NOPB Data Sheet

 

5 

SNLU101 – April 2012 

 

 

 
The DS90UB903Q/904Q evaluation boards consist of two sections. The first part of the 
board provides the point-to-point interface for transmitting parallel video data. The second 
part of the board allows bi-directional control communication of an I2C bus control of using 
a MCU/FPGA to programming a remote peripheral device via the Serializer.  
 
The PCB routing for the Serializer input pins (DIN) accept incoming parallel video data at 
1.8V/3.3V LVCMOS signals from J1 IDC connector. The FPD-Link III interface uses a 
single twisted pair cable (provided).  The output pins (ROUT) are accessed through a J7 
IDC connector. Please follow these steps to set up the evaluation kit for bench testing and 
performance measurements: 
 
1)  A two (2) meter high speed USB 2.0 cable has been included in the kit.  Connect the 4-

pin USB A 

side of cable harness to the serializer board and the other 

side of the harness, the 5-pin mini USB jack 

to the Deserializer board.  

This completes the FPD-Link III interface connection. 

 

 
2)  Jumpers and switches have been configured at the factory; they should not require any 

changes for immediate operation of the chipset.   See text on Configuration settings 
and datasheet for more details. 

 
3)  From the controller, connect a flat cable (not supplied) to the Serializer board and 

connect another flat cable (not supplied) from the Deserializer board to the display 
module.  Note: For 50 ohm signal sources, provide 1.8V/3.3V LVCMOS input signal 
levels into DIN[20:0] and PCLK and add  50 ohm parallel termination resistors R1-R22 
on the DS9UB903Q Serializer board.

 

 
4)  Connect the Serializer I2C ports to the I2C of the MCU/FPGA (I2C master). Connect 

the Deserializer I2C ports to the I2C bus of the peripheral slave device.  

 
5)  Power for the Serializer and Deserializer boards must be supplied externally through 

Power Jack (VDD).  Grounds for both boards are connected through Power Jack (VSS) 
(see section below).