CLINK3V48BT-133 National Semiconductor, CLINK3V48BT-133 Datasheet

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CLINK3V48BT-133

Manufacturer Part Number
CLINK3V48BT-133
Description
BOARD EVAL FOR DS90CR485, 486
Manufacturer
National Semiconductor

Specifications of CLINK3V48BT-133

Main Purpose
Interface, SerDes (Serializer / De-Serializer)
Embedded
No
Utilized Ic / Part
DS90CR485, DS90CR486
Primary Attributes
Serializes 48 LVCMOS/LVTTL to 8 LVDS, 66 ~ 133 MHz
Secondary Attributes
Transmits over 2 Meter 3M MDR LVDS Cable
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
DS90CR485/486 Evaluation Kit User Manual
Rev. 1.01
DS90CR485/486
48-bit, 66 – 133 MHz
Channel Link SerDes Chipset
Evaluation Kit User Manual
Part Number: CLINK3V48BT-133
January 2005
PC and Networking Group
National Semiconductor Corporation
Document Revision 1.01
1 of 32

Related parts for CLINK3V48BT-133

CLINK3V48BT-133 Summary of contents

Page 1

... DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 DS90CR485/486 48-bit, 66 – 133 MHz Channel Link SerDes Chipset Evaluation Kit User Manual Part Number: CLINK3V48BT-133 PC and Networking Group National Semiconductor Corporation Document Revision 1.01 January 2005 ...

Page 2

... Introduction...................................................................................... 4 Evaluation Board Features.............................................................. 4 Contents of the Evaluation Kit ......................................................... 4 Applications ........................................................................................ 5 Getting Started ................................................................................... 7 Setup ............................................................................................... 8 Board Configuration ........................................................................... 9 CLINK3V48BT-133 Evaluation Board Layout Silkscreen .............. 10 Power Connection ......................................................................... 11 Transmitter CLKIN Input Clock...................................................... 12 Default Switch & Jumper Configuration......................................... 13 Alternative Switch & Jumper Configurations ................................. 15 Power Down mode ........................................................................ 15 Cable Deskew ............................................................................... 16 DS_OPT ........................................................................................ 17 Transmitter PRBS Generator Mode ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Introduction ...

Page 4

... DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 The National Semiconductor CLINK3V48BT-133 evaluation kit demonstrates the performance of the DS90CR485/485 48-bit, 66 – 133 MHz Channel Link SerDes chipset. The printed circuit board (PCB) is optimized for the high-speed operation. The LVCMOS/LVTTL parallel bus trace impedance is 50 Ohms and LVDS differential impedance is 100 Ohms ...

Page 5

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Applications ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 DS90CR485 DS90CR483 CLOCK IN CLOCK IN PLL (66 – 133MHz) (33 - 112MHz) POWERDOWN Channel Link Application The diagram above illustrates ...

Page 7

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Getting Started ...

Page 8

... DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 The CLINK3V48BT-133 evaluation board is delivered ready to run with configuration switches and jumpers set to their default positions. To start using the evaluation kit, follow these steps: 1) Connect one end of the D26-1 MDR cable to the transmitter output connector (J4) and the other end to the receiver input connector (J5) ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Board Configuration ...

Page 10

... DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 CLINK3V48BT-133 Evaluation Board Layout Silkscreen ...

Page 11

... DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Overview The CLINK3V48BT-133 evaluation kit is configured using switches SW1 – SW3 and jumpers J6 – J12. The DS90CR485 Transmitter and DS90CR485 Receiver parallel LVCMOS/LVTTL data buses and clocks are accessed through the 50-pin IDC connectors, J1 – J3. The transmitter clock can be applied through the 50-pin IDC connector or one of the two on-board oscillators can be selected ...

Page 12

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Transmitter CLKIN Input Clock An external low jitter clock may be supplied at pin 2 of jumper J1 or alternatively, one of two convenient on-board oscillators (66 MHz or 133 MHz) may be ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Default Switch & Jumper Configuration The following default settings are for normal data transmission operation. Designator Settings CON1 CON1 CON2 CON2 CON3 CON3 CON4 CON4 SW1 CON5 CON5 CON6 CON6 CON7 CON7 CON8 ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 J10 66MHz J11 Manual Adjust J12 2.5V_Vcc External clock used 133MHz (No Jumper) 0% pre-emphasis (R42 potentiometer is ignored) 0% Transmitter inputs are 3V-tolerant 3.3V_Vcc ...

Page 15

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Alternative Switch & Jumper Configurations Power Down mode Both the transmitter and receiver have power down control pins. Power down mode shuts down the internal PLL and other circuitry to minimize power consumption. ...

Page 16

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 DC Balance mode DC balance mode helps minimize the short-and-long-term DC bias on the LVDS lines to facilitate driving long cables. To use this function, both transmitter and receiver DC balance (BAL) pins ...

Page 17

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Designator Settings RE-START DESKEW RE-START DESKEW PLLSEL PLLSEL SW3 DC BAL OFF DC BAL OFF CON1 CON1 PWR DOWN PWR DOWN DS_OPT The DS90CR485 transmitter DS_OPT pin (J6) automatically generates an LVDS switching ...

Page 18

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Transmitter Input Voltage Tolerance Setting The DS90CR485 transmitter inputs are configurable as either 2.5V or 3.3V tolerant. This can be achieved by connecting input voltage jumper (J12) to 2.5V or 3.3V. Typically, the ...

Page 19

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Transmitter PRBS Generator Mode The DS90CR485 transmitter is equipped with an internal test pattern generator that can be used to check signal quality (eye-patterns) on the link. To enable this test mode, select ...

Page 20

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Pin & Signal Assignments ...

Page 21

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 The following tables show signal mapping for IDC connectors, MDR connectors, switches and jumpers. IDC Connector Note: All odd number pins in the IDC connectors are grounded (GND). Transmitter Parallel Inputs Pin # ...

Page 22

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 MDR Connector Transmitter LVDS Output Pin # NAME Pin 1 Pin 2 Pin 3 TxOUT0P Pin 4 TxOUT1P Pin 5 TxOUT2P Pin 6 CLK1P Pin 7 Pin 8 Pin 9 TxOUT3P Pin 10 ...

Page 23

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Switches Transmitter Configuration Control SIGNAL Pin # BOARD LABEL NAME Pin 1 CON1 / HIGH CON1 Pin 2 CON2 / HIGH CON2 Pin 3 CON3 / HIGH CON3 Pin 4 CON4 / HIGH ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 On-Board Termination Resistors ...

Page 25

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Transmitter LVCMOS/LVTTL Data Input Termination Resistors An on-board 50-Ohm termination resistor to ground is provided at each transmitter LVCMOS/LVTTL clock and data input to match standard 50-Ohm test environments real application, ...

Page 26

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Receiver LVDS Input Termination The DS90CR486 Receiver has nine total LVDS input pairs (eight pairs of data and one pair of clock). Impedance and lengths are matched on all nine pairs and between ...

Page 27

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Optional Receiver LVCMOS/LVTTL Output Termination Resistors (Unpopulated) 0402-size resistor pads are provided on each receiver output trace (R43 – R91). These pads are unpopulated from the factory. Note: The user must cut the ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Troubleshooting ...

Page 29

DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Troubleshooting If the demo boards are not performing properly, use the following as a guide for quick solutions to common problems. If the problem persists, contact the hotline number listed under Additional Information ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 Additional Information ...

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DS90CR485/486 Evaluation Kit User Manual Rev. 1.01 PCB Schematic Document number: CLINK3V485/486 PCB Rev: 1.01 PCB Bill of Material Document number: CLINK3V485/486 BOM Rev: 1.02 PCB Layouts Rev: 1 Cable & Connector Info Crystal Oscillator Info ...

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... For more information on Channel Link devices, refer to the National’s LVDS website at: LVDS.national.com Interface Application Hotline: +1 (408) 721-8500 (California, USA) © National Semiconductor, 2003. National Semiconductor and the “N” logo are registered trademarks of National Semiconductor Corporation. All other brand or product names are trademarks of their respective owners. All rights reserved ...

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