Related Manuals for GENNUM EB-GS2985-S
Summary of Contents for GENNUM EB-GS2985-S
- Page 1 EB-GS2985-S Evaluation Board User Guide www.gennum.com EB-GS2985-S 1 of 25 Evaluation Board User Guide 52246 - 2 July 2009...
-
Page 2: Table Of Contents
1.7 Power Pins ............................9 1.8 Measuring ORL ..........................11 1.9 Board & Software Setup Instructions ..................11 1.9.1 Installing the Gennum USB Dongle Board Software ..........11 1.9.2 Installing the GS2985 Control Software..............13 1.9.3 Setting Up the Hardware ....................16 1.9.4 GS2985 Control Software .................... -
Page 3: General Description
It is strongly recommended to read the GS2985 Data Sheet (Doc ID: 36663_DocX.pdf) before using this evaluation kit. Evaluation Kit Contents • Gennum EB-GS2985-S Evaluation Board • Gennum USB Dongle with Ribbon Cable • CD containing GS2985 Evaluation Software, Drivers and Collateral EB-GS2985-S 3 of 25 Evaluation Board User Guide... -
Page 4: Overview
Overview Together with the EB-GS2985-S (single-channel) Evaluation Board, this document serves as a guide for evaluating the GS2985, a Gennum 3Gb/s, HD, SD SDI serial digital reclocker. This document contains four main sections: 1. Evaluation Board User Guide. 2. Evaluation Board Schematics. -
Page 5: Evaluation Board User Guide
1. Evaluation Board User Guide Figure 1-1 shows the inputs, outputs and power connections for the EB-GS2985-S. CD Control (SW2) RSET Resistor Select LEDs (RSET_SEL) KBB Input Select (KBB_SEL) DATA1/RCLK Output SPI Interface ORL_JP CD_TERM CD_TERM_SEL Power RCLK Control CD_SEL... -
Page 6: Sdi Inputs And Outputs
SW1 marked DATA/CLOCK. 1.3 SPI Interface The EB-GS2985-S features an SPI interface (JP1) which is used to access all of the GS2985 registers. The SPI interface is automatically enabled when the Gennum USB dongle is connected. The Gennum USB Dongle can connect the EB-GS2985-S to a computer via USB. -
Page 7: Gs2984 Eq Control I/O
Not connected (default) KBB = unconnected 1.5 GS2984 EQ Control I/O A switch (SW3) and a jumper (MUTE_SEL) facilitate the manual configuration of the GS2984 Equalizer on the EB-GS2985-S evaluation board. These are described in the tables below. EB-GS2985-S 7 of 25... -
Page 8: Gs2988 Cd Control I/O
Mute Off 1.6 GS2988 CD Control I/O A switch (SW2) and a jumper (RSET_SEL) facilitate the manual configuration of the GS2988 Cable Driver on the EB-GS2985-S evaluation board. These are described in the tables below. Table 1-7: SW2 Positions Switch Position... -
Page 9: Power Pins
500mV output swing 1.7 Power Pins The default supply configuration allows for quick power-up of the EB-GS2985-S by applying 3.3V to the EQ post and grounding the GND post. Power supply connections can be changed to evaluate each device seperately over their specified range of supply voltages. - Page 10 Table 1-10: Cable Driver Supply Select (CD_SEL) Position Connection Description RCLK (default) Cable Driver supply tracks Reclocker supply Cable Driver uses a separate power supply (CD post) EB-GS2985-S 10 of 25 Evaluation Board User Guide 52246 - 2 July 2009...
-
Page 11: Measuring Orl
(CD_TERM post) 1.8 Measuring ORL To measure Output Return Loss (ORL) on the EB-GS2985-S board, follow the next steps: 1. Disconnect ORL_JP 2. Set the SW2 position marked EQ to LOW “0”. This sets the EQ input of the cable driver to LOW “0”. - Page 12 4. Click Install from a list or specific location (Advanced). Figure 1-3: Install window for the Gennum USB Dongle Board 5. Select and navigate (browse) to the directory Include this location… D:\MCHPFSUSB\PC\MCHPUSB Driver\Release and click Open. De-Select Search removable media…...
-
Page 13: Installing The Gs2985 Control Software
Figure 1-5: Completed installation of the Gennum USB Dongle Board 1.9.2 Installing the GS2985 Control Software Install the GS2985 Control Software (one time installation per computer): 1. Insert the Gennum GS2985 Evaluation Board CD. 2. Traverse to the GS2985_GUI folder. - Page 14 Figure 1-6: GS2985 Control Welcome Screen You will be prompted to select a directory location to install the GS2985 software. Figure 1-7: GS2985 Control File Location Window EB-GS2985-S 14 of 25 Evaluation Board User Guide 52246 - 2 July 2009...
- Page 15 The next screen is to verify your choices. Figure 1-8: GS2985 Control Ready to Begin Installation Window The window below will appear once the wizard finished the installation. Figure 1-9: GS2985 Control Successful Completion Window EB-GS2985-S 15 of 25 Evaluation Board User Guide 52246 - 2...
-
Page 16: Setting Up The Hardware
When the Gennum USB Dongle is configured properly, the LEDs D6 and D7 will blink alternately. The Master Reset Button is pushed to reset the Gennum USB Dongle Board, in case the LEDs D6 and D7 stop blinking. Connect the EB-GS2985-S Board to the USB Dongle Board as per Figure 1-11. -
Page 17: Gs2985 Control Software
1.9.4 GS2985 Control Software 1. Start GS2985 Control Software by clicking on the appropriate link on the Start Menu. 2. Control SPI Register Settings & Observe Outputs. Figure 1-12: Gennum GS2985 Control Interface EB-GS2985-S 17 of 25 Evaluation Board User Guide... -
Page 18: Functionality Of Buttons
Dual = combination of edge detection and signal strength LOS Threshold Sensitivity LOS Threshold Adjust. 0 = least sensitive, 3 = most sensitive EB-GS2985-S 18 of 25 Evaluation Board User Guide 52246 - 2 July 2009... -
Page 19: Pin Override Functionality
4. Connect the Gennum USB Dongle Board to a PC USB port via a USB cable. 5. Perform a hard reset, via the Reset button on the Gennum USB Dongle board as per Figure 1-10. -
Page 21: Power & Control Schematic
VCC1 100n 3V3/2V5 CD_SEL RCLK 219-3MST 1 EQ 100n EQ CTRL 3V3/2V5 RCLK_SEL + C41 100n 49k9 1 GND 49k9 49k9 Figure 2-2: Power & Control Schematic EB-GS2985-S 21 of 25 Evaluation Board User Guide 52246 - 2 July 2009... -
Page 22: Board Layout
3. Board Layout Figure 3-1: Layer 1 (Top Layer) Figure 3-2: Layer 2 (Ground Layer) Figure 3-3: Layer 3 (Power Layer) Figure 3-4: Layer 4 (Bottom Layer) EB-GS2985-S 22 of 25 Evaluation Board User Guide 52246 - 2 July 2009... -
Page 23: Bill Of Materials
Header; male 2-pole 2mm JP16 Clip, test point (orange) JP2, JP4 Header; male, 4-pole 2mm JP5, JP6, JP9, JP11, JP15 Header; male, 3-pole 2mm Clip, test point (yellow) EB-GS2985-S 23 of 25 Evaluation Board User Guide 52246 - 2 July 2009... -
Page 24: Evaluation Board User Guide 52246 - 2 July
Switch; tape seal 8-position SMD Switch; tape seal 2-position SMD Switch; tape seal 3-position SMD Gennum GS2984 3Gb/s Equalizer Gennum GS2985 3Gb/s Reclocker Gennum GS2988 3Gb/s Cable Driver Crystal; 27.0000MHz 18pF SMD (CS10-27.000MABJ) EB-GS2985-S 24 of 25 Evaluation Board User Guide... -
Page 25: Eb-Gs2985-S
E-mail: gennum-taiwan@gennum.com Gennum Corporation assumes no liability for any errors or omissions in this document, or for the use of the circuits or devices described herein. The sale of the circuit or device described herein does not imply any patent license, and Gennum makes no representation that the circuit or device is free from patent infringement. - Page 26 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Semtech EBK-GS2985-01 EBK-GS2985-02...