Semtech GS12070 is a versatile evaluation platform that enables users to assess the capabilities of the GS12281 and GS12241 devices. It supports a wide range of video formats, including SD, HD, 3G, 6G, and 12G, and can be configured to operate in MUX, DEMUX, or Bypass modes. The GS12070 also features a pattern generator and a loopback mode for testing purposes. With its comprehensive set of features, the GS12070 is an ideal tool for engineers and system designers working with high-speed video applications.
Semtech GS12070 is a versatile evaluation platform that enables users to assess the capabilities of the GS12281 and GS12241 devices. It supports a wide range of video formats, including SD, HD, 3G, 6G, and 12G, and can be configured to operate in MUX, DEMUX, or Bypass modes. The GS12070 also features a pattern generator and a loopback mode for testing purposes. With its comprehensive set of features, the GS12070 is an ideal tool for engineers and system designers working with high-speed video applications.
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Revision History
Contents
1. Quick Start Guide.............................................................................................................................................5
1.1 Start Up Sequence ..............................................................................................................................5
1.2 Configuration Mapping ....................................................................................................................5
2. Detailed Description.......................................................................................................................................7
2.1 Power-Up ...............................................................................................................................................7
2.2 RDK Evaluation Modes .....................................................................................................................7
2.3 Conversion Modes .............................................................................................................................9
2.4 GS12070 Settings ............................................................................................................................ 10
2.5 Video Inputs & Outputs ................................................................................................................. 11
2.6 RDK Status & Control ...................................................................................................................... 12
3. Software User Guide.................................................................................................................................... 13
3.1 Initial Software State ...................................................................................................................... 13
3.2 Selecting the Dongle ...................................................................................................................... 14
3.2.1 Refresh..................................................................................................................................... 14
3.3 System Tab ......................................................................................................................................... 15
3.3.1 Main Tab ................................................................................................................................. 15
3.3.2 I/O Card Tab........................................................................................................................... 16
3.3.3 Pattern Generator Tab....................................................................................................... 17
3.4 Advanced Tab ................................................................................................................................... 18
3.4.1 CONFIG Tab ........................................................................................................................... 18
3.4.2 Input Tab ................................................................................................................................ 19
3.4.3 Output Tab............................................................................................................................. 20
3.4.4 Operating Mode .................................................................................................................. 21
3.4.5 MUX Tab ................................................................................................................................. 22
3.4.6 DEMUX Tab............................................................................................................................ 23
3.4.7 PID Insert Tab........................................................................................................................ 24
3.5 Register Access ................................................................................................................................. 25
Version ECO Date Changes and/or Modifications
2 038790 September 2017
Updated to reference the GS12281 and
GS12241 parts.
1 034218 November 2016
Updated Quick Start Guide, Table 2-1,
Table 2-3, Section 2.5, Table 2-5, and
Section 3.1.
0 032891 August 2016 New document.
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General Description
This document provides guidance on how to use the RDK-GS12070 Reference Design
board. It is recommended that the GS12070 Data Sheet (PDS-061012) is read prior to
reading this document in order to get familiarized with the features of the GS12070.
Overview
The RDK-GS12070 can be powered-up and evaluated out-of-the-box as a standalone kit
without GUI control. Connecting to a PC (using the supplied USB cable) enables
evaluation of the advanced features which are only accessible through the host
interface. However, the following features are among those which are available
out-of-the-box without any programming required:
• MUX Mode with multiple conversion mode options
• DEMUX Mode with multiple conversion mode options
• Four-lane Bypass Mode for all supported rates including SD
• 75% colour bars pattern generator for all supported rates
• SMPTE-compliant MUX/DEMUX modes
For a quick evaluation, please refer to the Quick Start Guide section of this document.
For detailed descriptions of the supported evaluation features of the RDK, please refer
to the Detailed Description of this document.
Kit Contents
The RDK-GS12070 contains the following components:
• RDB-GS12070 board
• RDB-GS12070-IN input video board
• RDB-GS12070-OUT output video board
• USB Cable
• +12VDC external power supply
• GUI (available online – www.semtech.com)
• Guides (available online – www.semtech.com)
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Figure A: RDK-GS12070 Inputs, Outputs and Power Connections
SDI3
(J3)
SDI2
(J5)
SDI1
(J4)
SDI0
(J2)
SDO3
(J3)
SDO2
(J5)
SDO1
(J4)
SDO0
(J2)
Control Switches
(SW4, SW5)
USB Connector
(J1)
Status LED
(D1)
Power Indicator (D1)
GS12281 Lock Indicators
(D3, D4, D5, D2)
STAT0, STAT4, STAT8, STAT12 Indicators
(D7, D6, D5, D4)
Evaluation Mode Selector (SW2)
GS12241 Lock Indicators
(D2, D5, D4, D3)
External 12VDC Power Connector (J2)
Power Indicator (D9)
MODE_SEL[2:0] Description Table 1.8V Supply Test Point (TP8)
3.3V Supply Test Point (TP2)
Power Indicator (D1)
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1. Quick Start Guide
1.1 Start Up Sequence
1.2 Configuration Mapping
1. Set Evaluation
Mode
2. Set Configuration
Setting
3. Apply Power 4. Connect Cables to
Inputs & Outputs
5. Evaluate System
Set Mux/Demux/Bypass & Conversion Mode
Wait 11 seconds
Blue LED turns on
when board is ready.
When changing
evaluation modes
with a board powered,
the user can power
cycle the board.
Connect Inputs
Connect Outputs
Table 1-1: Configuration Mapping
Mode Description
Mode
Select
SW2
MUX
Setting
SW4[2]
MS[2:0]
Setting
SW4[7:5]
SBO[3:0]
Setting
SW5[1:4]
Bypass
Setting
SW5[7]
SDI Input
to BNC
SDI Output
from BNC
PG DL 6G
Pattern Generator
Dual Link 6G
2 1 100 0000 0
J2 (require
1080p60 3G)
J2, J5
PG SL 6G
Pattern Generator
Single Link 6G
2 1 110 0000 0
J2 (require
1080p24 HD)
J2
PG SL
12G
Pattern Generator
Single Link 12G
2 1 111 0000 0
J2 (require
1080p60 3G)
J2
J3
J5
J4
J2
J3
J5
J4
J2
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SL 3G to
DL HD
Single Link 3G
Level B to Dual
Link HD
3 0 001 0000 0 J2 J2, J4
SL 6G to
DL 3G
Single Link 6G to
Dual Link 3G
3 0 010 0000 0 J2 J2, J4
SL 12G to
DL 6G
Single Link 12G to
Dual Link 6G
3 0 011 0000 0 J2 J2, J4
DL 6G to
QL 3G
Dual Link 6G to
Quad Link 3G
3 0 100 0000 0 J2, J5 J2, J4, J5, J3
DL 12G
to QL 6G
Dual Link 12G to
Quad Link 6G
3 0 101 0000 0 J2, J5 J2, J4, J5, J3
SL 6G to
QL HD
Single Link 6G to
Quad Link HD
3 0 110 0000 0 J2 J2, J4, J5, J3
SL 12G to
QL 3G
Single Link 12G to
Quad Link 3G
3 0 111 0000 0 J2 J2, J4, J5, J3
DL 3G to
SL 6G
Dual Link 3G to
Single Link 6G
3 1 010 0000 0 J2, J4 J2
DL 6G to
SL 12G
Dual Link 6G to
Single Link 12G
3 1 011 0000 0 J2, J4 J2
QL 3G to
DL 6G
Quad Link 3G to
Dual Link 6G
3 1 100 0000 0 J2, J4, J5, J3 J2, J5
QL 6G to
DL 12G
Quad Link 6G to
Dual Link 12G
3 1 101 0000 0 J2, J4, J5, J3 J2, J5
QL HD to
SL 6G
Quad Link HD to
Single Link 6G
3 1 110 0000 0 J2, J4, J5, J3 J2
QL 3G to
SL 12G
Quad Link 3G to
Single Link 12G
3 1 111 0000
0
J2, J4, J5, J3 J2
BP SD Bypass SD 3 1 111 1111 1 J2, J4, J5, J3 J2, J4, J5, J3
BP HD Bypass HD 3 1 111 0000 1 J2, J4, J5, J3 J2, J4, J5, J3
BP 3G Bypass 3G 3 1 111 0000 1 J2, J4, J5, J3 J2, J4, J5, J3
BP 6G Bypass 6G 3 1 111 0000 1 J2, J4, J5, J3 J2, J4, J5, J3
BP 12G Bypass 12G 3 1 111 0000 1 J2, J4, J5, J3 J2, J4, J5, J3
Table 1-1: Configuration Mapping (Continued)
Mode Description
Mode
Select
SW2
MUX
Setting
SW4[2]
MS[2:0]
Setting
SW4[7:5]
SBO[3:0]
Setting
SW5[1:4]
Bypass
Setting
SW5[7]
SDI Input
to BNC
SDI Output
from BNC
J3
J5
J4
J2
J3
J5
J4
J2
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2. Detailed Description
RDB-GS12070-IN and RDB-GS12070-OUT 12G input and output video cards are supplied
with the kit. When connected to the 12G input and output cards, video input can be
provided to the GS12070 through four input BNC connectors and output through four
separate output BNC connectors. Video output is provided through four output BNC
connectors. The RDB-GS12070 board can be configured to operate in MUX, DEMUX or
Bypass modes. Each of the MUX and DEMUX modes supports different conversion
modes.
2.1 Power-Up
A 12VDC external power supply is included with the kit. Before connecting the 12VDC
power supply to VIN, ensure that shunts are populated on JP5, JP6, JP7. Alternatively, a
lab bench power supply can be used using TP6 and TP7. Choose either J2 or TP6/TP7 to
power-up the board, not both.
2.2 RDK Evaluation Modes
The evaluation mode is selected using the SW2, SW4 and SW5 rotary switch. A selection
can be made before or after power-up. Once the board is ready, the blue LED (D2) is
illuminated, indicating that the board is now ready to receive user-input. It is advised to
only change evaluation modes while the blue board Ready indicator is on. The available
evaluation modes are summarized in Table 2-1. It is recommended that the user
performs a power cycle after changing modes.
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Table 2-1: RDK Evaluation Modes
SW2 Rotary
Switch Position
Mode Description
0GSPI Only
Use this mode when only GSPI support is required.
GSPI interface is enabled but CSRs are not
modified from their default power up state. No
optimization occurs for any of the GS12241,
GS12281 or GS12070 devices.
1
Mission
Mode
Use this mode when evaluating devices in MUX,
DEMUX or Bypass modes at any supported data
rate.
2
Pattern
Generator
Use this mode when pattern generator is required.
A blue LED will briefly turn off and turn on after 4s.
The GS12070 is configured and optimized to
operate as a pattern generator. By default, the
output pattern is set to 75% colour bars. The
output data rate is set by changing MS[2:0].
110 = Single link 6G, requires HD 1080p24
reference signal on DDI0
100 = Dual link 6G, requires 3G 1080p60 reference
signal on DDI0
111 = Single link 12G, requires 3G 1080p60
reference signal on DDI0
Note 1: set MUX =1, BYP = 0 when using this
mode.
Note 2: This mode is untested.
3
12G/6G/
3G/HD
Input
Use this mode evaluating devices using
12G/6G/3G/HD inputs, typically in MUX, DEMUX or
Bypass modes.
A blue LED will briefly turn off and turn on after 4s.
The GS12070 is optimized to accept 12G, 6G, 3G or
HD inputs.
4N/A
Mode not supported. A blue LED will flash
repeatedly and then remain on.
A red LED will also turn on.
5N/A
Mode not supported. A blue LED will flash
repeatedly and then remain on.
A red LED will also turn on.
6N/A
Mode not supported. A blue LED will flash
repeatedly and then remain on.
A red LED will also turn on.
7N/A
Mode not supported. A blue LED will flash
repeatedly and then remain on.
A red LED will also turn on.
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2.3 Conversion Modes
Different conversion modes are supported in MUX and DEMUX modes, as described in
Table 2-2 below:
Table 2-2: Table Conversion Modes
MS[2:0] Setting Mode Description
111 QL 3G SL 12G
Quad Link 3G to Single Link 12G (MUX = 1)
Single Link 12G to Quad Link 3G (MUX = 0)
110 QL HD SL 6G
Quad Link HD to Single Link 6G (MUX = 1)
Single Link 6G to Quad Link HD (MUX = 0)
101 QL 6G DL 12G
Quad Link 6G to Dual Link 12G (MUX = 1)
Dual Link 12G to Quad Link 6G (MUX = 0)
100 QL 3G DL 6G
Quad Link 3G to Dual Link 6G (MUX = 1)
Dual Link 6G to Quad Link 3G (MUX = 0)
011 DL 6G SL 12G
Dual Link 6G to Single Link 12G (MUX = 1)
Single Link 12G to Dual Link 6G (MUX = 0)
010 DL 3G SL 6G
Dual Link 3G to Single Link 6G (MUX = 1)
Single Link 6G to Dual Link 3G (MUX = 0)
001 DL HD SL 3G
Dual Link HD to Single Link 3G (MUX = 1)
Single Link 3G to Dual Link HD (MUX = 0)
Note: In order for this mode to be
implemented, the following registers must
be written to:
Write 0x03 to Register Address 0x16
Write 0x01 to Register Address 0x13
Write 0x92 to Register Address 0x65
Write 0x2D48 to Register Address 0x64
000 RSVD —
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2.4 GS12070 Settings
Several GS12070 settings are available through SW4 and SW5 as described in Table 2-3
below:
Table 2-3: Other Switch Settings
Switch Setting Description
LAS
SW4[1]
Link Assignment:
1 = Link assignment based on
Embedded ST 352 Packet
0 = Link assignment based on Physical
Input Order
MUX
SW4[2]
MUX/DEMUX:
1 = Multiplex mode enabled
0 = Demultiplex mode enabled
SLE
SW4[3]
Second Link Enable:
1 = Second link enabled. Use with
Single Link to Dual Link or Dual Link to
Single Link conversion modes. In this
mode, the GS12070 is configured to
act like two gearbox devices. Device 1
uses DDI0/DDI1/DDO0/DDO1. Device
2 uses DDI2/DDI3/DDO2/DDO3
0 = Second link disabled
Note: Requires 0x01FF to be written to
address 0x14 and 0x00F0 to be written
to address 0x6C.
D02
SW4[4]
Demux Mode Input 0 or Input 2 Select:
1 = In DEMUX Mode, selects DDI2 as
the main input
0 = In DEMUX Mode, selects DDI0 as
the main input
Note: Mode only available when SLE =
1. Requires 0x01FF to be written to
address 0x14 and 0x00F0 to be written
to address 0x6C.
MS[2:0]
SW4[7:5]
Conversion Mode Select:
111 = QL 3G SL 12G
110 = QL HD SL 6G
101 = QL 6G DL 12G
100 = QL 3G DL 6G
011 = DL 6G SL 12G
010 = DL 3G SL 6G
001 = DL HD SL 3G
000 = Disabled
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2.5 Video Inputs & Outputs
When RDB-GS12070-IN is used as an input card, video inputs are provided through four
BNC connectors as shown in Table 2-4. LOCK indicators for each input card Equalizer are
provided through D2, D5, D4 and D3. Similarly, when RDB-GS12070-OUT is used as an
output card, video outputs are provided through four BNC connectors. LOCK indicators
for each output card Cable Driver are provided through D2, D5, D4 and D3.
When using the graphical user interface of the device, the status of the Input and Output
cards can be read in the Main Tab. For basic configuration of the Equalizers and Cable
Drivers, select the appropriate target device under the I/O Card Tab and modify visible
settings as desired.
For additional register control of the Equalizer and Cable Driver, consult the GS12241
and GS12281 CSR document for Register Address and Values to read and write through
the Register Access tab of this GUI.
SB0[3:0]
SW5[4:1]
SD Bypass. Use when input is SD:
1 = Selects the SD data rate per
channel when in bypass mode
0 = SD bypass disabled
Note: SD Bypass is only available when
BYP = 1.
PM0
, PM1
SW5[5], SW5[6]
SMPTE compliant MUX/DEMUX Mode:
1 = ST 352 payload identifier is not
used
0 = ST 352 payload identifier in
combination with the setting of
MS[2:0] will be used to determine the
output signal's ST 352 payload
identifier values
BYP
SW5[7]
Bypass. Overrides MUX/DEMUX
Modes:
1 = Bypass Mode enabled
0 = Bypass Mode disabled
Table 2-3: Other Switch Settings (Continued)
Switch Setting Description
Table 2-4: Video Inputs, Outputs and LOCK Indicators
BNC
Connector
RDB-GS12070-IN
Description
RDB-GS12070-OUT
Description
IN/OUT LOCK
Indicator
J3 DDI3 DDO3 D2
J5 DDI2 DDO2 D5
J4 DDI1 DDO1 D4
J2 DDI0 DDO0 D3
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2.6 RDK Status & Control
Status and Control is provided through various headers, switches and LEDs as described
in Table 2-5 below:
Table 2-5: Other Status & Control
Component Description
UC Reset Switch (SW1) Not used. UC reset switch.
ROT_SW (SW2) Rotary switch for evaluation mode selection.
USBON (D1)
Green LED indicates that the USB is ready for PC
connectivity and Host Configuration.
ERROR (D2)
Red LED indicates boot-up errors or unsupported
user mode warnings.
Flashing/On indicates an error during boot-up;
ensure I/O cards are connected correctly.
TEST (D3)
Blue LED indicates that the board is ready,
evaluation mode warnings.
Flashing indicates that evaluation mode not
supported.
On indicates that the board is ready.
STAT LEDs (D7, D6, D5, D4)
Monitoring of STAT0, STAT4, STAT8 and STAT12.
GPIO indicators represented on the STAT LEDs can
be configured through the Operating Mode tab of
the device GUI.
POWER (D9) RDK power indicator.
USB (J1)
RDK USB connector. Use with the included USB
cable to connect to the GUI.
VIN (J2)
12VDC external power supply connector. Use with
the included power supply.
PROG_HDR (J3) Not used. UC programming header.
GSPI_HDR (J4) Not used. External GSPI dongle header.
JTAG Header (J5) Not used. GS12070 JTAG programming header.
STAT Header (J6) Monitoring of STAT[15:0] and GND points.
RX_CLK SMA Connector (J7)
Extracted parallel clock from RX0, RX1, RX2 and RX3
depending on C44-C47 population option:
RX_CLK0 = Populate C44, DNP C45-C47
RX_CLK1 = Populate C45, DNP C44, C46, C47
RX_CLK2 = Populate C46, DNP C44, C45, C47
RX_CLK3 = Populate C47, DNP C44-C46
TX_PCL SMA Connector (J8)
Tx input clock depending on C48-C49 population
option:
TX_PCLK0 = Populate C48, DNP C49
TX_PCLK1 = Populate C49, DNP C48
TIM_OUT Header (J9)
Monitoring of the extracted horizontal timing for
TIM_OUT[3:0].
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3. Software User Guide
When it is desired to use the Evaluation Board with GUI interface, it is required that the
Evaluation Board is connected to a PC through the supplied USB cable.
3.1 Initial Software State
Initially, when the software is loaded, it is in a default state as shown in Figure 3-1.
Figure 3-1: RDK-GS12070 Initial Software State
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3.2 Selecting the Dongle
Used to enable control of the hardware.
Figure 3-2: Selecting the Dongle
3.2.1 Refresh
The Refresh button, located in the bottom right-hand corner of the GUI, updates all of
the controls in the GUI with their respective values from the device. The GUI can
automatically perform this task if the Auto box is checked. The Refresh button appears
on all tabs of this GUI.
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3.3 System Tab
3.3.1 Main Tab
Split into three sections, this tab provides an indication of the Equalizer (EQ), Gearbox,
and Cable Driver (CD) status.
EQ: I/P Rate Detect.
Gearbox: Lock Status, Rate Detected, Operating Mode, O/P Drive Strength, Output
Power-down.
CD: O/P Rate Detect.
Figure 3-3: Main Tab
EQ Section Gearbox Section CD Section
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3.3.3 Pattern Generator Tab
The Pattern Generator feature is available but not yet verified. This tab allows the user
to evaluate the Pattern Generator of the GS12070 device.
The following steps should be taken to enable the pattern generator:
• Click the Enable Pattern Generator box.
• Select one of two Timing References:
DDI0 Video Stream extracts the clock from the incoming video applied to BNC
J2 (SDI0).
External Clock refers to the on-board 27MHz crystal. With this setting selected,
the user must perform a Lock Override from the Advanced Input Tab in
order for the Pattern Generator to function.
Once the appropriate clock reference is selected, the user may select the pattern to be
displayed. The user must ensure that all Lock and Override boxes are checked.
Figure 3-5: Pattern Generator Tab
Click “Load” after selecting
Timing and Pattern
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3.4 Advanced Tab
The Advanced tab allows the user to load configuration as well as enable Advanced
feature tabs to view and modify the Gearbox CONFIG, Input, Output, Operating
Mode, MUX, DEMUX and PID Insertion. The GS12070 Data Sheet should be referred to
before modifying any of the Advanced features.
3.4.1 CONFIG Tab
Figure 3-6: CONFIG Tab
Innumerates unit addresses
on the I/O cards
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Semtech GS12070 is a versatile evaluation platform that enables users to assess the capabilities of the GS12281 and GS12241 devices. It supports a wide range of video formats, including SD, HD, 3G, 6G, and 12G, and can be configured to operate in MUX, DEMUX, or Bypass modes. The GS12070 also features a pattern generator and a loopback mode for testing purposes. With its comprehensive set of features, the GS12070 is an ideal tool for engineers and system designers working with high-speed video applications.
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