Texas Instruments DS90UB914A-CXEVM: FPD-Link III Deserializer Evaluation Module DS90UB914A-CXEVM DS90UB914A-CXEVM 데이터 시트

제품 코드

DS90UB914A-CXEVM

Operation

1.3

Operation

Make sure S1, S2, JP8, JP13 of Serializer board and S1, S2, JP6, JP12 of Deserializer board are
configured as shown in

and

1. Connect the DS90UB913AQ and DS90UB914AQ Evaluation boards using a coax cable.

2. Connect the 5V power supply to Deserializer board (recommended current limit is 300mA) and apply

power as shown in

3. Look for the LED D2 to light up on the DS90UB914AQ board. If the LED is lit and stable, then the

DS90UB914AQ is LOCKED to the FPD-Link III serial stream.

CONGRATULATIONS, you are up and running!
If not, continue to the next section…

1.4

Trouble Shooting the EVM setup

1. Check power supply polarity!!! Warning: reverse supply polarity can damage the board.

2. Check to make sure there is sufficient current (300mA) by checking that the voltage (5V) is correct

using DMM.

3. Check to make sure there is a FPD-Link III signal by probing on both C16 AND C19 on SER board and

C6 AND C7 on DES board.

4. Monitor the LOCK signal at pin 4 (pin 3 is GND) of connector JP2 using oscilloscope on DES board.

Do not rely on visual inspection of D2 (Lock LED) present on deserializer board.

5. With no PCLK input applied on SER board, PCLK output frequency on DES board should be 50MHz

for the default settings.

Table 1-1. PCLK output (on DES) without applying PCLK input(on SER)

Mode Selected

PCLK output expected

10 bit mode (default mode)

50MHz

12 bit low frequency mode

25MHz

12 bit high frequency mode

37.5MHz

6. Go back to

to double check factory settings.

SNLU135 – JUNE 2013

Introduction