Texas Instruments DS90UB933-Q1EVM User manual

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SNLU210B–July 2016–Revised December 2017
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DS90UB933-Q1EVM User's Guide
SNLU210B–July 2016–Revised December 2017
DS90UB933-Q1EVM User's Guide
The Texas Instruments DS90UB933-Q1EVM Evaluation Module (EVM) provides an easy way to evaluate
the operation and performance of the DS90UB933-Q1 FPD-Link III Serializer.
(1) Coax cable is not provided with the EVM.
(2) Boards are configured to transmit power over coax cable, hence connect power to Deserializer board only.
(3) Not a specific recommendation, for evaluation purpose only.
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1 Overview
Other components required: Power supply (12 V), 50-Ωcoaxial cable, and a compatible deserializer board
such as DS90UB934. (1) (2)
Figure 1. DS90UB933-Q1EVM
Specification for orderable coax cable: (3)
Water Blue, FAKRA Jack to FAKRA Jack Cable, 60-inch length, using RG174 Coax cable. EVM boards
have SMB connector mounted as shown in Figure 1.

Operation with Deserializer www.ti.com
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2 Operation with Deserializer
Make sure jumper is placed between positions 2 and 3 (VDDIO and +1V8) on J2.
1. Connect the DS90UB933-Q1 and Deserializer board using a coax cable.
2. Ensure Power over Coax is configured with 5V<=VPoC<=9V.
3. Connect the 12-V power supply to Deserializer board (recommended current limit is 500 mA) and
apply power.
4. Look for the LED D2 to light up on the Deserializer board (if applicable).
• If the LED is lit and stable, then the Deserializer is LOCKED to the FPD-Link III serial stream…
CONGRATULATIONS, you are up and running!
• If not, continue to the next section.

www.ti.com Troubleshooting the EVM Setup
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3 Troubleshooting the EVM Setup
1. Check power supply polarity.
WARNING
Reverse supply polarity can damage the board.
2. Check power over Coax configuration on deserializer board. Make sure correct voltage is applied
(5V<=VPoC<=9V). (Refer to Derserializer's user guide for jumper setup)
3. Check to make sure there is sufficient current (500 mA) by checking that the voltage (12 V) is correctly
applied to deserializer using DMM.
4. Check to make sure there is a FPD-Link III signal by probing on both C17 AND C19.
5. Monitor the LOCK signal using oscilloscope on DES board. Do not rely on visual inspection of Lock
LED present on deserializer board.
6. With no PCLK input applied on SER board, PCLK output frequency on DES board should be 50MHz
for the default settings.
Table 1. PCLK Output (on DES) without Applying PCLK Input (on SER)
Mode Selected PCLK Output Expected
10 bit mode (default mode) 50 MHz
12 bit high frequency mode 37.5 MHz
7. Go back to to double check factory settings.

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4 Board Setup Details
This section describes the connectors and jumpers on the board as well as how to properly connect, set
up and use the DS90UB933-Q1EVM in detail.
4.1 Power Connections
1. Connect an external 12 V to the Deserializer board. (Refer to Deserializer's user guide for specific
pins)
2. Connect ground to Deserializer board. (Refer to Deserializer's user guide for specific pins)
3. Since boards are configured to transmit power over coax cable (PoC), it is not required to connect
external power to Serializer, unless PoC is not used.
Figure 2. Powering DS90UB933-Q1EVM

www.ti.com Board Setup Details
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4.2 FPD-Link III Connection
The FPD-Link III serial stream comes out of CN1 on Serializer board as a single ended signal. Connect it
to J1 on the Deserializer board. DOUT- on serializer and RIN1- on deserializer are terminated to ground
through 47-nF capacitor in series with 50Ωresistance.
Figure 3. Serial Link Connection Using a Single 50-ΩCoaxial Cable
4.3 LVCMOS Input Connector Description (on DS90UB933-Q1 Board)
J1 – GPO0, GPO1, CLK OUT, CLK IN, DIN[11:0], HSYNC, VSYNC, PCLK IN are the input pins for the
LVCMOS interface on Serializer board. Refer to Figure 4 below.
Figure 4. Parallel Input Connector on Serializer Board

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4.4 Factory Set Switch Settings and Jumpers Default Configuration
4.4.1 Serializer Board Default Configuration
Figure 5. Switch S2: Default Settings on Serializer Board
1. Mode Select Resistor R19 is default set to 4.7kΩfor external oscillator mode. Replace R19 with 100kΩ
for PCLK from imager mode.
2. On J2, a 3-pin header is factory placed as shown in. This selects power from U2 for 1.8V VDDIO and
does not have the 3.3V VDDIO option internally.
5 Using I2C
5.1 Default Addresses
The default 7-bit I2C address of DS90UB933-Q1 is set to 0x58 (101 1000) using suitable resistor divider
on ID[x] pin. Change resistor R15 and R16 to change the address of this device, refer device datasheet
for more information.
5.2 Analog Launch Pad (ALP)
A USB2ANY is required to use interactive GUI over I2C such as ALP. Download and install ALP from:
http://www.ti.com/tool/ALP. This is what ALP should look like when launched while connected to a
USB2ANY. The part number on the left may be different, or there may not be one, but the key is that it will
say USB2ANY...' under Devices.
In practice the DS90UB933-Q1EVM is programmed by the deserializer such as the DS90UB934 EVM.
The deserializers typically have the USB2ANYs I2C programming functionality integrated into the EVM.
The DS90UB933-Q1EVM does not contain a USB2ANY in its kit.

www.ti.com Using I2C
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Expand the Tools panel and select USB2ANY/AArdvark Setup.
If there is already a device listed n the menu, then select it and click Remove

Using I2C www.ti.com
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Once it has been removed (or if there wasn't one to begin with), select the EVM name from the list on the
right and click Add. If you plan on using a deserializer to program the DS90UB933-Q1EVM, select the
deserializer name if you have it connected instead.

www.ti.com Schematics
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6 Schematics
Figure 6. DS90UB933-Q1 Serializer

Schematics www.ti.com
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Figure 7. Power to Serializer Board and Header