Texas Instruments DS90UB925QSEVB User manual

User’s Guide
Sept 2012
DS90UB925QSEVB User’s Guide
Sept 2012 DS90UB925QSEVB User’s Guide 1
LIST OF FIGURES ....................................................................................................................................... 1
LIST OF TABLES......................................................................................................................................... 1
1.INTRODUCTION ............................................................................................................................. 2
1.1.CONTENTS OF DS90UB925QSEVB ............................................................................................. 2
1.2.HIGHLIGHTS OF EVB .................................................................................................................... 2
1.3.OPERATION – QUICK SETUP....................................................................................................... 3
1.4.TROUBLE SHOOTING THE EVB................................................................................................... 3
2.BOARD SETUP DETAILS .............................................................................................................. 4
2.1.POWER CONNECTIONS................................................................................................................ 4
2.2.FPD-LINK III CONNECTION ........................................................................................................... 4
2.3.FACTORY SET SWITCH SETTINGS AND JUMPERS DEFAULT CONFIGURATION ................ 4
2.4.LVCMOS INPUT CONNECTOR DESCRIPTION............................................................................ 5
3.APPENDIX – I2C, INTEGRATED SPA DONGLE .......................................................................... 6
3.1.I2C SPA DONGLE HOOKUP.......................................................................................................... 6
3.2.IDX BOARD DEFAULT ADDRESS ................................................................................................ 6
3.3.ALP SOFTWARE SETUP ............................................................................................................... 7
3.3.1.SYSTEM REQUIREMENTS ............................................................................................................ 7
3.3.2.CD CONTENTS ............................................................................................................................... 7
3.3.3.INSTALLATION OF THE ALP SOFTWARE .................................................................................. 7
3.3.4.INSTALLATION OF THE USB DRIVER ......................................................................................... 8
3.3.5.STARTUP - SOFTWARE DESCRIPTION ...................................................................................... 8
3.3.6.TROUBLE SHOOTING ALP SOFTWARE ................................................................................... 15
4.APPENDIX – USE OF OPTIONAL ROSENBERGER HSD CONNECTOR (J1).......................... 18
5.APPENDIX – USE OF OPTIONAL MINI-B USB CONNECTOR (J2)........................................... 18
6.APPENDIX - BOARD LAYOUT .................................................................................................... 18
7.SCHEMATIC.................................................................................................................................. 25
8.BILL OF MATERIALS ................................................................................................................... 30
LIST OF FIGURES
Figure 1: DS90UB925Q EVB........................................................................................................................ 2
Figure 2: Factory Switch (S1,S2,S3,S4) and Jumper (JP2) Configuration................................................... 5
Figure 3: Initial ALP Screen .......................................................................................................................... 9
Figure 4: TOP View..................................................................................................................................... 19
Figure 5: BOTTOM View............................................................................................................................. 20
Figure 6: TOP Layer ................................................................................................................................... 21
Figure 7: GND Layer................................................................................................................................... 22
Figure 8: PWR Layer .................................................................................................................................. 23
Figure 9: BOTTOM Layer ........................................................................................................................... 24
LIST OF TABLES
Table 1: Bill of Materials.............................................................................................................................. 30

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2DS90UB925QSEVB User’s Guide Sept 2012
1. Introduction
The Texas Instruments DS90UB925QSEVB evaluation kit (EVB) provides an easy way to evaluate the
operation and performance of the DS90UB925Q 2.975Gbps FPD-Link III serializer.
1.1. Contents of DS90UB925QSEVB
1- DS90UB925Q EVB, 1- CD with ALP software, 1- USB cable
1.2. Highlights of EVB
Figure 1: DS90UB925Q EVB
* The default factory configuration is VDDIO = 3.3V. 3.3V does not have to be applied externally. To
interface to 1.8V inputs, 1.8V must applied externally. For VDDIO = 1.8V, move jumper on JP2 to short pins 1
and 2.
External 1.8V here*
3.3V
FPD-Link III
Output
LVCMOS
Inputs
(
video
)
GND
Apply 3.3V here
LVCMOS
I/Os
(
GPIOs
,
I2S
)
ALP
Interface
(for register access)
B

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Sept 2012 Literature Number: SNLU113 3
1.3. Operation – Quick Setup
Make sure S1, S2, S3, S4, and JP2 are configured as shown in Figure 1.
1) Turn on the deserializer.
Typically this would be the DS90UB926Q EVB.
2) If interfacing to 3.3V LVCMOS, skip this step, otherwise:
when interfacing to 1.8V LVCMOS inputs (upstream device), move factory jumper from pin-2/3 to pin 1 to
connect to pin-1/2 and apply 1.8V power to pin 1 of JP1. This will connect the external 1.8V to the
DS90UB925Q VDDIO, otherwise skip this step.
3) Apply 3.3V power to the DS90UB925Q VDD.
4) Look for the green LED2 to light up on the DS90UB926Q EVB. If the green LED is lit and stable, then the
DS90UB926Q is LOCKED to the FPD-Link III serial stream. To be absolutely sure the DS90UB926Q is
locked, use a scope to monitor off JP6 (pin 1 = LOCK, pin 2 = VSS) of the DS90UB926QSEVB.
CONGRATULATIONS, you are up and running!
If not continue to the next step…
1.4. Trouble Shooting the EVB
1) Check power supply polarity!!! Warning: reverse supply polarity can damage the board.
2) Check to make sure there is sufficient current by checking that the voltage (3.3V) is correct at J6.
3) Check polarity of SER to DES cable interface. e.g. SER DOUT+ is going to RIN+ of DES and vice versa.
4) Check to make sure there is a FPD-Link III signal by probing on both C9 AND C10.
5) Go back to figure 1 and double check factory settings.
3.3
V

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4DS90UB925QSEVB User’s Guide Sept 2012
2. Board Setup Details
This section describes, in detail, the connectors and jumpers on the board as well as how to properly
connect, set up, and use the DS90UB925Q EVB.
2.1. Power Connections
1) Connect ground to J7.
2) Connect an external 3.3V into J6. This is the core voltage of the DS90UB925Q.
3) For VDDIO = 1.8V, connect ground to pin 2 of JP1.
4) Connect an external 1.8V into pin 1 of JP1. This is VDDIO power.
2.2. FPD-Link III Connection
J10, J11 – is the default SMA connector. The FPD-Link III serial stream comes out on J10 and J11. Note:
J10 is DOUT+, J11 is DOUT- of the DS90UB925Q. Connect to the deserializer from these two SMAs.
Typically the deserializer will be the DS90UB925Q.
2.3. Factory Set Switch Settings and Jumpers Default Configuration
S1, S2, S3, S4 and JP2 are factory configured as shown in Figure 2 for plug and play operation. For each
of these 3-pin headers JP2, a jumper must be placed as shown.
1)
The S1 switch is factory set as shown below.
The PDB switch is set HIGH and will turn on the DS90UB925Q upon power up.
SW2 is a momentary switch. Instead of toggling switch 1 of S1 to do a PDB toggle, press SW2 to do a
PDB toggle.

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Sept 2012 Literature Number: SNLU113 5
2)The S2 and S3 switches are factory set as shown below.
All switches are set HIGH except 18 on S3. This sets IDx address to 18. Note only one switch is allowed
LOW at a time.
3) The S4 switch is factory set as shown below.
All switches are set HIGH except 1. This sets MODE_SEL address to 1. Note only one switch is allowed
LOW at a time.
4) On JP2, a 2-pin jumper is factory placed as shown below.
The jumper sets VDDIO to 3.3V. Note 3.3V does not need to be applied externally.
Figure 2: Factory Switch (S1,S2,S3,S4) and Jumper (JP2) Configuration
2.4.
LVCMOS Input Connector Description
J5 – R[7:0], G[7:0], B[7:0], HS, VS, DE, PCLK is the input connector for the DS90UB925Q data inputs.
These are the LVCMOS inputs of the DS90UB925Q. The even numbered pins (right side pins on the board)
are the inputs. The odd numbered pin (left side pins on the board) is VSS.
R6 G2
B0 B4 B6
G4 R7
B1 B2
VSS
G3 G5 R0 G6
B7
R4
DE
B3
R5
HS
B5
G1 R3 R2
PCLK
J5
HEADER 28x2
1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
G7 VS R1 G0
7
8 3
8
1

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6DS90UB925QSEVB User’s Guide Sept 2012
3. Appendix – I2C, integrated SPA Dongle
3.1. I2C SPA Dongle Hookup
3.2. IDx Board Default Address
The IDx address on the EVB has been preset at 18.
3.3V
FPD-Link III
Output
GND
Connect to PC
with supplied
USB cable
B

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Sept 2012 Literature Number: SNLU113 7
3.3. ALP Software Setup
3.3.1. System Requirements
Operating System: Windows XP or Vista
USB: 2.0
3.3.2. CD contents
Extract the “ALPF_xxxxxxxx_xxx_xxxx.exe” file to a temporary location that can
be deleted later.
Make sure J4 on the DS90UB925 is connected to a PC USB port with the
supplied USB cable and power is applied to the DS90UB925 EVB
The following installation instructions are for the Windows XP Operating System.
3.3.3. Installation of the ALP software
Execute the ALP Setup Wizard program called “ALPF_monthdayyear_major
version_minor version.exe” that was extracted to a temporary location on the local
drive of your PC.
There are 7 steps to the installation once the setup wizard is started:
1. Select the “Next” button.
2. Select “I accept the agreement” and then select the “Next” button.
3. Select the location to install the ALP software and then select the “Next” button.
4. Select the location for the start menu shortcut and then select the “Next”
button.
5. There will then be a screen that allows the creation of a desktop and Quick
Launch icon. After selecting the desired choices select the “Next” button.
6. Select the “Install” button, and the software will then be installed to the selected
location.
7. Uncheck “Launch Analog LaunchPAD” and select the “Finish” button. The ALP
software will start if “Launch Analog LaunchPAD” is checked, but it will not be
useful until the USB driver is installed.
Connect J3 of the DS90UB925Q EVB board to a PC/laptop with the supplied mini
USB cable. Power the DS90UB925Q EVB board with a 3.3 VDC power supply.
The “Found New Hardware Wizard” will open on the PC/laptop. Proceed to the
next section to install the USB driver.

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8DS90UB925QSEVB User’s Guide Sept 2012
3.3.4. Installation of the USB driver
There are 6 steps to install the USB driver:
1. Select “No, not at this time” then select the “Next” button.
2. Select “Install from a list or specific location” then select the “Next” button.
3. Select “Search for the best driver in these locations”. Uncheck “Search
removable media” and check “Include this location in the search”.
4. Browse to the Install Directory which is typically located at “C:\Program
Files\National Semiconductor Corp\Analog LaunchPAD\vx.x.x\Drivers” and
select the “Next” button. Windows should find the driver.
5. Select “Continue Anyway”.
6. Select the “Finish” button.
The software installation is complete. The ALP software may now be launched, as
described in the next section.
3.3.5. Startup - Software Description
Make sure all the software has been installed and the hardware is powered on
and connected to the PC. Execute “Analog LaunchPAD” from the start menu.
The default start menu location is “Programs\National Semiconductor
Corp\Analog LaunchPAD vx.x.x\Analog LaunchPAD”.

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Sept 2012 Literature Number: SNLU113 9
The application should come up in the state shown in the figure below. If it does
not, see “Trouble Shooting” at the end of this document.
Under the Devices tab click on “DS90UB925” to select the device and open up
the device profile and its associated tabs.
Figure 3: Initial ALP Screen
After selecting the DS90UB925, the following screen should appear.
Appears only
when
deserializer is
detected

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10 DS90UB925QSEVB User’s Guide Sept 2012
Information Tab
The Information tab is shown below. Please note the device revision could be different.
System Topology Tab
The System Topology tab is shown below.
Appears only
when
deserializer is
detected
Appears only
when
deserializer is
detected

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Sept 2012 Literature Number: SNLU113 11
SER Pattern Generator Tab
The SER Pattern Generator tab is shown below.
DES Pattern Generator Tab
The DES Pattern Generator tab is shown below.

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12 DS90UB925QSEVB User’s Guide Sept 2012
Registers Tab
The Registers tab is shown below.
Registers Tab – Address 0x00 selected
Address 0x00 selected as shown below. Note that the “Value:” box, , will now show
the hex value of that register.

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Sept 2012 Literature Number: SNLU113 13
Registers Tab – Address 0x00 expanded
By double clicking on the Address bar
or a single click on Address 0x00 expanded reveals contents by bits. Any register address
displayed can be expanded.
Any RW Type register, , can be written into by writing the hex value into the “Value:” box,
or putting the pointer into the individual register bit(s) box by a left mouse click to put a
check mark (indicating a “1”) or unchecking to remove the check mark (indicating a “0”). Click the
“Apply” button to write to the register, and “refresh” to see the new value of the selected
(highlighted) register.
The box toggles on every mouse click.
I2C PASS ALL 0x17[7]=1
I2C PASS ALL 0x17[7] should be selected to communicate with slave devices.
Registers Tab – Address 0x17 selected
Address 0x00 selected as shown below. Note that the default “Value:” box, , will now
show the hex value of that register.

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14 DS90UB925QSEVB User’s Guide Sept 2012
Registers Tab – Address 0x17 expanded
By double clicking on the Address bar
or a single click on Address 0x17 to expand view to reveal contents by bits.
Either enter “DE” in the value box or toggle bit 7 to enable I2C PASS ALL. Click
for the register value to be written into register.
Do not select I2C PASS ALL on deserializer side if enabled on serializer side.

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Sept 2012 Literature Number: SNLU113 15
Scripting Tab
The Scripting tab is shown below. Usage is not described in this document.
3.3.6. Trouble Shooting ALP Software
If the following window opens after starting the ALP software, double check the
hardware setup.
Analog LaunchPAD No Devices Error
It may also be that the USB driver is not installed. Check the device manager.
There should be an “NSC ALP Nano Atmel” device under the “Universal Serial
Bus Controllers” as shown below.

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16 DS90UB925QSEVB User’s Guide Sept 2012
Windows XP, Analog LaunchPAD USB Driver
The software should start with only “DS90UB925Q” in the “Devices” pull down
menu. If there are more devices then the software is most likely in demo mode.
When the ALP is operating in demo mode there is a “(Demo Mode)” indication in
the lower left of the application status bar as shown below.

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Sept 2012 Literature Number: SNLU113 17
Analog LaunchPAD in Demo Mode
Disable the demo mode by selecting the “Preferences” pull down menu and un-
checking “Enable Demo Mode”.
Analog LaunchPAD Preferences Menu
After demo mode is disabled, the ALP software will poll the ALP hardware. The
ALP software will update and have only “DS90UB925Q” under the “Devices” pull
down menu.

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18 DS90UB925QSEVB User’s Guide Sept 2012
4. Appendix – Use of optional Rosenberger HSD connector (J1)
Unpopulate R68 and R71 0201 sized 0Ωresistor. R68 and R71 pads are on the back side
of the EVM. This will cut the stub traces to J12 and J13 (SMAs). Populate J1 (Rosenberger
HSD connector).
R71
0 ohm
0201
RIN-_SMA
VSS
RIN+R68
0 ohm
0201
RIN-
J12
SMA
1
2
3
4
5
VSS
RIN-
J13
SMA
1
2
3
4
5
J1
HSD_2X2_open
1 23
4
5 67
8
9
10 1112
13
RIN+
RIN+_SMA
VSS
5. Appendix – Use of optional mini-B USB connector (J2)
Use this option when connecting to standard DS90UR905Q EVB.
Populate R69 and R70 with 0201 sized 0Ωresistor (suggest Panasonic ERJ-1GE0R00C or
equivalent). R69 and R70 pads are on the back side of the EVM under J1. This will connect
J2. Ideally, J1 (Rosenberger HSD connector) should be removed to eliminate the stub.
Warning: R68 and R71 should not be populated when using J2.
RED
RIN-_USB
VIA2
CON1
1
BLK
J2
mini USB 5pin_open
1
2
3
4
5
6 78
9
VIA1
CON1
1
VSS
VSS
JP8
3-Pin Header_open
1 2 3
VSS
RIN-
JP9
3-Pin Header_open
1 2 3
RIN+
R69
0 ohm_open
0201
R70
0 ohm_open
0201
mini B:
component side
(TOP)
RIN+_USB
Add a two pin jumper on JP8 and JP9; this will ground the unused wires in the USB cable.
6. Appendix - Board Layout
Figure 5, Figure 6, Figure 7, and Figure 8 show the board layout for the DS90UB925Q EVB.
The DS90UB925Q is a 4-layer board (TOP / GND / PWR / BOTTOM). The 50Ωmicrostrip trace on the top
layer of the board is referenced to GND, and the 100Ωdifferential traces are referenced to GND.

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Sept 2012 Literature Number: SNLU113 19
Figure 4: TOP View

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20 DS90UB925QSEVB User’s Guide Sept 2012
Figure 5: BOTTOM View