Semtech EBK-GS12150 Evaluation Board Kit User guide

Brand
Semtech
Model
EBK-GS12150 Evaluation Board Kit
Type
User guide
EBK - GS12150 User Guide
Evaluation Board Kit User Guide
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EBK - GS12150
Evaluation Board Kit User Guide Rev.0
PDS-061830 September 2018
www.semtech.com
EBK - GS12150
Evaluation Board Kit User Guide Rev.0
PDS-061830 September 2018
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Revision History
Contents
1. Quick Start Guide.............................................................................................................................................6
1.1 System Block Diagram ......................................................................................................................6
1.2 Start Up Sequence ..............................................................................................................................6
1.3 Configuration 1 — DDI0 as Input .................................................................................................8
1.4 Configuration 2 — DDI1 as Input .................................................................................................9
1.5 Configuration 3 — PRBS Generator Mode ................................................................................9
2. Software User Guide.................................................................................................................................... 11
2.1 Installing the Software GUI .......................................................................................................... 11
2.2 GUI Operation ................................................................................................................................... 15
2.2.1 Getting Started..................................................................................................................... 15
2.2.2 Device Settings Tab............................................................................................................ 16
2.2.3 Main Tab ................................................................................................................................. 17
2.3 Additional GUI Feature .................................................................................................................. 18
2.3.1 PRBS Tab................................................................................................................................. 18
2.3.2 Eye Monitor ........................................................................................................................... 21
3. Schematics ...................................................................................................................................................... 24
4. Board Layout .................................................................................................................................................. 27
5. Bill of Materials............................................................................................................................................... 29
Version ECO Date Changes and/or Modifications
0 043613 September 2018 New document.
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General Description
This document provides guidance on how to use the EBK - GS12150 evaluation board to
easily evaluate Semtech’s GS12150 Reclocker. It is recommended that the user be
familiar with the GS12150 Data Sheet (PDS - 061454) prior to reading this document, or
using this evaluation board kit.
Overview
The EBK - GS12150 can be powered-up and evaluated out-of-the box as a standalone kit
with or without GUI control. Connecting to a PC (using the supplied USB cable) enables
the evaluation of advanced features which are accessible through the host interface /
Graphical User Interface (GUI).
The following features are available out-of-the-box without any configuration required:
• Differential Input from DDI_0, Output on DDO_0, DDO_1
• Differential Input from DDI_1, Output on DDO_0, DDO_1
• PRBS7 signal generated, Output on DDO_0, DDO_1
For a quick evaluation, refer to the Quick Start Guide section of this document.
Kit Contents
• Semtech EBK - GS12150 Evaluation Board
• Micro USB Cable (for GUI communication)
• Power supply (+5V)
• 4x Rubber feet
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Figure A: EBK - GS12150 Inputs, Outputs and Power Connections
Input
DDI_1P
(J6)
Output
DDO_0P
(J9)
GS12150 Dual Input Reclocker
(U9)
USB Connection
(J41)
Power Supply (+5V)
(J43)
Output
DDO_0N
(J14)
Output
DDO_1P
(J5)
Output
DDO_1N
(J11)
Input
DDI_1N
(J30)
Input
DDI_0P
(J3)
Input
DDI_0N
(J4)
VCCO Voltage
Select (J1)
Power Reset
(SW1)
Switch
(SW10)
GPIO State (SW3)
Table A: Connector Descriptions
Designator Description
J3, J4 DDI0 - Input is routed to the GS12150 Trace Equalizers.
J6, J30 DDI1 - Input is routed to the GS12150 Trace Equalizers.
J9, J14 DDO0 - Output of the GS12150 Trace Drivers.
J5, J11 DDO1 - Output of the GS12150 Trace Drivers.
J41
Micro USB - Used to access advanced functionality via GUI. For
Software User Guide, see Section 2.2.1
J43 Power Supply (+5V)
J1 VCCO Voltage Select
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Figure A: Top View
Figure B: Front View
Figure C : Rear View
Power Supply (+5V)
(J43)
Output
DDO_1N
(J11)
Output
DDO_1P
(J5)
Output
DDO_0N
(J14)
Output
DDO_0P
(J9)
Input
DDI_1P
(J6)
Input
DDI_1N
(J30)
Input
DDI_0P
(J3)
Input
DDI_0N
(J4)
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1. Quick Start Guide
1.1 System Block Diagram
Figure 1-1: EBK - GS12150 System Block Diagram
The evaluation board is designed to function out of the box. The following steps go
through the initial setup using the EBK - GS12150 evaluation board.
1.2 Start Up Sequence
1. Shunt Configuration
There is one shunt that need to be placed on the board (if the board is not already
populated with these) before being powered.
• J1 — set this to 1.2V/1.8V/2.5V as desired for the evaluation.
Note: If evaluating the output pre-emphasis features, it is suggested to set this to
2.5V.
2. Connect to USB interface or use in stand-alone mode.
Note:
• For further information on GUI installation, use, and features see all of Section 2.
• Standalone mode does not require a USB connection to the device. For more
information on standalone mode see step 3. Power for further information.
• If using GUI control and the board or microcontroller is reset, the GUI will need to
be reconnected to the Evaluation Board. See 2.2.1 Getting Started for
information on reconnecting the Evaluation Board.
3. Power
Apply a 5V power supply to the board using the TP14 and TP13 or via the barrel jack J43.
Note: Do not apply more than 5.5V. If power has been correctly applied, D1 will light. If
there is a fault, D34 will light. If D1 does not light, check the voltage and polarity of the
source.
GS12150
DDI_1P
(J6)
100Ω dierential
50Ω SMA
DDI_1N
(J30)
DDI_0P
(J3)
DDI_0N
(J4)
DDO_0P
(J9)
DDO_0N
(J14)
DDO_1P
(J5)
DDO_1N
(J11)
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4. Stand-Alone Mode
Stand-alone mode allows for use of the GS12150 evaluation board without connection
to a PC. The available modes using this control are outlined in
Table 1-2: SW10 Mode
Selection
. To use the evaluation board in this mode, please see the following steps:
a. Complete steps 1 and 3 listed above.
b. Set SW10 to the desired mode.
5. DIP Switch Configuration
No alterations need to be made to the default DIP switch configuration for SW4 and
SW2.
SW3 can be used to switch pull-down resistors on each of the GS12150’s GPIO lines. The
pins are pulled up to 1.8V if the switch is open.
SW10 is used to change modes, as described in step 4.
6. Indicators
Notes:
1. See “GPIO Control” in 2.2.2 Device Settings Tab for further information on changing GPIO
functions.
2. GPIO numbers on the silkscreen are reversed on Rev.0 PCBs. Use the test point and LED
numbers listed in the above chart as they are correct.
Table 1-1: Indicators
LED Number GPIO Pin Test Point Default Function
D2 GPIO3 TP6 DDO1 Disable (Input, Active High)
D3 GPIO2 TP8 Sleep Control (Input, Active High)
D4 GPIO1 TP9 PLL Lock Status (Output)
D5 GPIO0 TP7 LOS Indicator (Output)
Table 1-2: SW10 Mode Selection
SW10[4:1] Mode Description
1111 DDI0 as Input
Utilizes DDI0 as the input.
See Section 1.3 for further information
1110 DDI1 as Input
Utilizes DDI1 as the input.
See Section 1.4 for further information
1101 PRBS Generator as output
Generates a PRBS7 12G signal on both outputs.
See Section 1.5 for further information.
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Figure 1-2: SW10.1 Location
1.3 Configuration 1 — DDI0 as Input
To use input DDI0 as the selected input on the GS12150 evaluation board, complete one
of the four methods described below, then apply a valid SDI signal to DDI0. The
differential output will be present on both DDO0 (J9/J14) and DDO1 (J5/J11).
Note: The numbers found in the brackets refer to the labels on the referenced figures
and are used to show locations in the GUI.
1. Set SW10 to 1111 as described in step 4. Stand-Alone Mode in Start Up Sequence.
2. Select the mode in the “Evaluation Board Mode Select” drop down on the “Device
Settings” tab of the GUI refer to
Figure 2-10: Device Settings Tab (6).
3. Using the GUI, ensure that the Input Select Mode is set to “CSR,” then set Input to
DDI0. See
Figure 2-11: Main Tab Features (7).
4. Set Input Select Mode to “Pin” and toggle the GPIO pin that is set to “Input Select”
via SW3. See
Figure 2-11: Main Tab Features (7) and Figure 2-10: Device Settings
Tab (5).
Note: While Input Select Mode = Pin, driving at GPIO pin mapped to “Input Select”
HIGH will select DDI0 and the input, and driving it LOW will select DDI1 as the input.
Figure 1-3: Configuration 1 — DDI0 as Input
5V Main Power
SW10.4
SW10.3
SW10.2
SW10.1
Power Reset
(SW1)
On-board
USB Dongle
Connection
VCCO_0 Voltage
Select (J1)
CFG_4
CFG_3
CFG_2
CFG_1
10
Trace EQ Input DDI0 (J3/J4)
Trace Driver Output DDO1 (J5/J11)
Trace Driver Output DDO0 (J9/J14 )
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1.4 Configuration 2 — DDI1 as Input
To use input DDI1 as the selected input on the GS12150 evaluation board, complete one
of the four methods described below, then apply a valid SDI signal to DDI1. The
differential output will be present on both DDO0 (J9/J14) and DDO1 (J5/J11).
Note: The numbers found in the brackets refer to the labels on the referenced figures
and are used to show locations in the GUI.
1. Set SW10 to 1110 as described in step 4. Stand-Alone Mode in Start Up Sequence.
2. Select the mode in the “Evaluation Board Mode Select” drop down on the “Device
Settings” tab of the GUI refer to
Figure 2-10: Device Settings Tab (6).
3. Using the GUI, ensure that the Input Select Mode is set to “CSR,” then set Input to
DDI1. See
Figure 2-11: Main Tab Features (7).
4. Set Input Select Mode to “Pin” and toggle the GPIO pin that is set to “Input Select”
via SW3. See
Figure 2-11: Main Tab Features (7) and Figure 2-10: Device Settings
Tab (5).
Note: While Input Select Mode = Pin, driving a GPIO pin that is set to “Input Select”
HIGH will select DDI0 and the input, and driving it LOW will select DDI1 as the input.
Figure 1-4: Configuration 2 — DDI1 as input
1.5 Configuration 3 — PRBS Generator Mode
To set the evaluation into PRBS Generator mode, complete one of the four methods
described below. The PRBS generator differential signal output will be present on both
DDO0 (J9/J14) and DDO1 (J5/J11). By default the generator will generate PRBS7 at 12G
from the internal clock source. For other options see Section 2.3.1. This mode can be
accessed one of three ways.
Note: The numbers found in the brackets refer to the labels on the referenced figures
and are used to show locations in the GUI.
1. Set SW10 to 1101 as described in step 4. Stand-Alone Mode in Start Up Sequence.
2. Select the mode in the “Evaluation Board Mode Select” drop down on the “Device
Settings” tab of the GUI refer to
Figure 2-10 (6).
3. Using the GUI, navigate to the PRBS tab and enable generation. See Section 2.3.1.
Trace EQ Input DDI1 (J6/J30)
Trace Driver Output DDO1 (J5/J11)
Trace Driver Output DDO0 (J9/J14 )
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Figure 1-5: Configuration 3 — PRBS
Trace Driver Output DDO1 (J5/J11) (PRBS 7)
Trace Driver Output DDO0 (J9/J14 ) (PRBS 7)
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2. Software User Guide
This guide provides instructions for using the software associated with the EBK -
GS12150.
2.1 Installing the Software GUI
1. The EBK - GS12150 Setup Wizard is shown in Figure 2-1.
Figure 2-1: Welcome Screen
2. Click “I accept the agreement” as shown in Figure 2-2, and then click “Next.”
Figure 2-2: License Agreement
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3. Before continuing with the setup, confirm that you meet the system requirements.
Click “Next.”
Figure 2-3: Software Requirements
4. Now, select the destination where you would like the software GUI to be installed.
Click “Next.”
Figure 2-4: Select Destination Location
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5. Next, select the start menu folder. Click “Next.”
Figure 2-5: Select Start Menu
6. Select if you would like to create a desktop icon (see Figure 2-6), and click “Next.”
Figure 2-6: Select Additional Tasks
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7. Click “Install.”
Figure 2-7: Ready to Install
8. Lastly, check “Launch” and click “Finish” to complete the installation and launch the
GUI.
Figure 2-8: Finish Installation
Note: When using the Semtech control GUI, please note the following:
• This application requires Microsoft.NET Framework 4.0 to be installed
• It is required that the Evaluation Board is connected to a PC through the internal
USB interface
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2.2 GUI Operation
2.2.1 Getting Started
Upon launching the GUI you will start at the main tab as shown in Figure 2-9.
To connect the GUI to the evaluation board and begin operation, complete the
following steps.
Note: The numbers found in the brackets refer to Figure 2-9 and are used to show
locations in the GUI.
1. Connect the Evaluation Board to your computer using the supplied USB cable.
2. Press Scan for Dongles (1).
3. Click the dropdown menu to the left of the Scan for Dongles button and select the
EB-GS12150-00 dongle (2).
Now the dongle is connected to the Evaluation Board. To get the current device status
press the Refresh button (3). You may also right click on any area of the GUI to bring up
another Refresh button which may be more accessible.
Additionally, there is an auto refresh function that the GUI can be set to use. This will auto
update the GUI once per second automatically. To enable this, tick the Auto box that is
found to the left of the Refresh button (3).
Figure 2-9: EB-GS12150 Main Tab
1
2
3
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2.2.2 Device Settings Tab
The Device Settings Tab has several items to be noted, they are as follows.
Note: The numbers found in the brackets refer to Figure 2-10 and are used to show
locations in the GUI.
• The Update button (4)
This button is not required during normal operation. It is only required to be used
if your local Semtech FAE has requested that you upload a specific configuration
file to the device
•GPIO Control (5)
On this tab you can set each of the 4 x GPIO to an Input or an Output, and set
each of the GPIOs to the desired function via the dropdown menus
For a detailed list of GPIO functions see the GS12150 Data Sheet
• Evaluation Board Mode Select (6)
This function allows the user to select one of the pre-programmed modes
listed Table 1-2
Figure 2-10: Device Settings Tab
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2.2.3 Main Tab
The Main Tab has several features for exploring the functionality of the GS12150. Some
notable items are called out in Table 2-1. For a full description of each control, please
see the GS12150 Data Sheet.
Note: The numbers found in the brackets refer to Figure 2-11 and Figure 2-12 and are
used to show locations in the GUI.
Table 2-1: Main Tab Features
Feature (Reference) Description
Input Select (7)
Selects the active input: DDI0 or DDI1.
The Mode Button selects between CSR (immediate) for GUI control and Pin
(immediate) control.
Note: If the evaluation board is set to use pin control, the actively selected input will
be set by the assigned GPIO pin. See “GPIO Control” in Section 2.2.2 for more
information on GPIO setting using the GUI.
Driver Settings (9)
Displays current output state including: disable and mute status, re-time status, and
driver swing settings.
Trace Equalizer Boost (8)
This sets the gain on the Trace Equalizer. The default value is 2. This value will need
to be adjusted based on the insertion loss profile of the input. See the “Input Trace
Equalization” section of the GS12150 Data Sheet for more details on boost setting
recommendation.
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Figure 2-11: Main Tab Features
2.3 Additional GUI Feature
2.3.1 PRBS Tab
The PRBS Tab allows for control over the integrated PRBS7 generator/checker in the
GS12150. The following is a description of how to use each function.
To use the PRBS Generator:
Note: Where applicable, each of the steps have a bracketed number which refer to their
position in Figure 2-12: PRBS7 Generator.
1. Ensure the Evaluation Board is connected to the GUI.
2. Click the Configure for PRBS Gen button (1).
3. Set the Signal Select to the desired setting from the dropdown menu (3).
4. Set the Clock Source to the desired setting from the dropdown menu (4).
5. Set the Clock Pre-Divider to the desired setting from the dropdown menu (5).
6. Set the Data Rate to the desired setting from the dropdown menu (6).
7. Click the Enable check box (2).
The device will now generate the set PRBS signal on its active output.
Note: If there is no signal present, ensure that the output is not disabled or muted.
7
8
9
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Figure 2-12: PRBS7 Generator
To perform a Continuous PRBS Measurement:
Note: Where applicable, each of the steps have a bracketed number which refer to their
position in Figure 2-13: PRBS7 Checker.
1. Ensure the Evaluation Board is connected to the GUI.
2. Apply a PRBS7 signal to the actively selected input.
3. Set the Measurement Type dropdown menu to “Continuous” (3).
4. Ensure that the Status field reads “Idle (ready for new operation)” (6).
5. Click the Start PRBS Measurement check box to start the measurement (4).
6. When it is desired to stop the measurement, Click the Start PRBS Measurement
check box to stop the measurement (4).
7. Results will appear in the Error Count field (5).
Note: The error count will not be available until the end of the operation. The
Status field will read “Idle (ready for new operation)” if the operation was
successful. If the GUI is not set to Auto-Refresh, clicking the Refresh button is
required for the error count to appear.
To perform a Timed PRBS Measurement:
Note: Where applicable, each of the steps have a bracketed number which refers to
their position in Figure 2-13: PRBS7 Checker.
1. Ensure the Evaluation Board is connected to the GUI.
1
2
3
4
5
6
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2. Apply a PRBS7 signal to the actively selected input.
3. Set the Measurement Type dropdown menu to “Timed” (3).
4. Set the Measurement Timer Pre-Divider and Measurement Interval to the
appropriate values to get the desired measurement time (1) (2).
Note: To determine the measurement time set by Measurement Timer
Pre-Divider and Measurement Interval see
Equation 2-1 . The maximum time the
PRBS Checker can be set to is approximately 3.35 seconds.
5. Ensure that the Status field reads “Idle (ready for new operation)” (6).
6. Click the Start PRBS Measurement check box to start the measurement (4).
7. Once the measurement is complete the Status field will read “Timed operation
completed (success)” (6).
Note: If the GUI is not set to Auto-Refresh, clicking the Refresh button is required
for this message to appear.
8. Results will appear in Error Count field (5). Note the error will not be available until
the end of the operation.
9. Click the Start PRBS Measurement check box to remove the checkmark. This
prepares the PRBS Checker for its next measurement (4).
Equation 2-1
Figure 2-13: PRBS7 Checker
MeasurementTime SecondsMeasurementTimerPreDivider =
MeasurementInterval 256 1+
1
40
------
MHz


1
2
3
4
5
6
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Semtech EBK-GS12150 Evaluation Board Kit User guide

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Semtech
Model
EBK-GS12150 Evaluation Board Kit
Type
User guide
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