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Intel LXD9781 Developer's Manual

Pqfp demo board with fpgas for rmii-to-mii conversion
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LXD9781 PQFP Demo Board with
FPGAs for RMII-to-MII
Conversion
Developer Manual
January 2001
As of January 15, 2001, this document replaces the Level One document
LXD9781 PQFP Demo Board with FPGAs for RMII-to-MII Conversion User Guide.
Order Number: 249043-001

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Summary of Contents for Intel LXD9781

  • Page 1 LXD9781 PQFP Demo Board with FPGAs for RMII-to-MII Conversion Developer Manual January 2001 As of January 15, 2001, this document replaces the Level One document Order Number: 249043-001 LXD9781 PQFP Demo Board with FPGAs for RMII-to-MII Conversion User Guide.
  • Page 2 No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.

  • Page 3: Table Of Contents

    Alternate MII Speed Configuration ..............14 LEDs ..........................15 Quick Status LEDs ....................15 Serial LEDs ......................15 Direct Drive LEDs....................16 Fiber Setup ........................18 Fiber Modules......................18 Board Schematics and Bill of Materials ............19 Bill of Materials ....................38 LXD9781 PQFP Demo Board with FPGAs for RMII-to-MII Conversion Developer Manual...
  • Page 4 Direct Drive LED Configuration Settings (Register 20) ........17 LED Pulse Stretch Settings (Register 20) ............17 MII Port Connections for Fiber Module Operation..........18 LXT9781 Bill of Materials ..................38 LXD9781 PQFP Demo Board with FPGAs for RMII-to-MII Conversion Developer Manual...

  • Page 5: General Description

    Four FPGAs convert the eight RMII interfaces on the LXT9781 to eight standard MII interfaces. This simplifies evaluation of the LXT9781, rendering it compatible with existing MII test equipment. The LXD9781 requires only a single 3.3V power supply. Refer to the latest LXT9761/81 data sheet for device functionality and specifications. Features •...

  • Page 6: Lxd9781 Pqfp Demo Board Block Diagram

    LXD9781 PQFP Demo Board Figure 1. LXD9781 PQFP Demo Board Block Diagram Port 0 MII Port 1 MII Port 2 MII Port 3 MII Port 4 MII Port 5 MII Port 6 MII Port 7 MII Header Header Header Header...

  • Page 7: Introduction

    The LXD9781 provides three sets of LED indicators: direct drive, per-port LEDs; a set of eight serial LED outputs that are decoded to drive 64 individual LEDs; and a serial Quick Status output that is decoded to drive a set of 14 LEDs.

  • Page 8: Typical Test Setup

    LXD9781 PQFP Demo Board Figure 2. Typical Test Setup SmartBits Smart Windows Advanced Multi-port Performance Tester RS-232 External Cards MII Cable Connectors LXD9781 Dual-High RJ45 Developer Manual...

  • Page 9: Lxd9781 Mii Demo Board

    LXD9781 PQFP Demo Board Figure 3. LXD9781 MII Demo Board Developer Manual...

  • Page 10: Quick-Start Checklist

    LXD9781 PQFP Demo Board Quick-Start Checklist Use this quick-start procedure for easy setup of the LXD9781 demo board. This procedure sets all ports to the default condition (Auto-Negotiation enabled, advertising dual-speed and full-duplex capabilities). 1. Set the jumpers in accordance with Table 2.

  • Page 11: Optional Configurations

    Optional Configurations Global Operating Configurations Switch S1 configures operating characteristics on all ports of the LXD9781. Each switch can be set manually by toggling the switch either to 1 or 0. Set switch S1 to the desired configuration according to Table Table 3.

  • Page 12: Mii Address Configurations

    LXD9781 PQFP Demo Board Table 4. LED/CFG_n Port Configuration Jumpers Jumpers Port CFG Bit 1 CFG Bit 2 CFG Bit 3 JP45 JP47 JP49 JP51 JP53 JP55 JP58 JP60 JP62 JP52 JP54 JP56 JP57 JP59 JP61 Table 5. Configuration Settings for Auto-Negotiation...

  • Page 13: Alternate Mdio Routing Configuration

    (JP29 jumper installed) this source is supplied from the common 3.3V power supply. However, the LXD9781 supports center-tap voltages down to 2.5V for reduced power applications. For evaluation in a reduced-power configuration, remove JP29 and apply 2.5V to post two of the jumper.

  • Page 14: Alternate Mii Speed Configuration

    LXD9781 PQFP Demo Board Table 9. Twisted-Pair Transmit Driver Supply Jumper Description Magnetic Source Voltage. Accesses magnetic transmit pair center-tap voltage source. JP29 Jumpered = provides 3.3V to the center-tap of the transmit magnetic. Open = provides path for reduced power source.

  • Page 15: Leds

    Jumpered = Divide quick status clock by 2. Serial LEDs The LXD9781 provides eight serial LED outputs (LEDS 7:0). There are eight data bits (one per port) in each serial stream, for a total of 64 LED indicators. Each serial output reports a specific status condition for all ports. Ports 0 through 7 are assigned bits 0:7 in each stream.

  • Page 16: Direct Drive Leds

    1 = Inactive 1. LEDs are configured active Low. Direct Drive LEDs The LXD9781 provides three programmable LED drivers per port. Each LED can display one of several available status conditions as selected by the LED Configuration Register (Address 20) shown in...

  • Page 17: Direct Drive Led Configuration Settings (Register 20)

    LXD9781 PQFP Demo Board Table 14. Direct Drive LED Configuration Settings (Register 20) LED Bits Program Bits Description LED1 LED2 LED3 0000 Indicates 100 Mbps operation. (Default for LED1) 0001 Indicates transmit (stretched). 0010 Indicates receive (stretched). (Default for LED3) 0011 Indicates collision.

  • Page 18: Fiber Setup

    Fiber Modules The LXT9781 supports eight combination twisted-pair/fiber ports for 100BASE-FX operation. Two Pseudo-ECL (PECL) interfaces are provided on the LXD9781 MII demo board for connection to external fiber optic transceiver modules. To setup the LXD9781 for 100BASE-FX evaluation, five external blue-wire connections and a fiber-optic transceiver module (HP’s HFBR-5903 or AMP’s 269147-2) are required.

  • Page 19: Board Schematics And Bill Of Materials

    LXD9781 PQFP Demo Board Board Schematics and Bill of Materials Figure 4. LXT97x1 Power (Board Revision B1) Developer Manual...
  • Page 20 LXD9781 PQFP Demo Board Figure 5. MII Ports 0 and 1 Developer Manual...
  • Page 21 LXD9781 PQFP Demo Board Figure 6. MII Ports 2 and 3 Developer Manual...
  • Page 22 LXD9781 PQFP Demo Board Figure 7. MII Ports 4 and 5 Developer Manual...
  • Page 23 LXD9781 PQFP Demo Board Figure 8. MII Ports 6 and 7 Developer Manual...
  • Page 24 LXD9781 PQFP Demo Board Figure 9. Twisted-Pair Ports 0 and 1 Developer Manual...
  • Page 25 LXD9781 PQFP Demo Board Figure 10. Twisted-Pair Ports 2 and 3 Developer Manual...
  • Page 26 LXD9781 PQFP Demo Board Figure 11. Twisted-Pair Ports 4 and 5 Developer Manual...
  • Page 27 LXD9781 PQFP Demo Board Figure 12. Twisted-Pair Ports 6 and 7 Developer Manual...

  • Page 28: Fiber Interface

    LXD9781 PQFP Demo Board Figure 13. Fiber Interface Developer Manual...
  • Page 29 LXD9781 PQFP Demo Board Figure 14. LED/CONFIG Ports 0 - 3 Developer Manual...
  • Page 30 LXD9781 PQFP Demo Board Figure 15. LED/CONFIG Ports 4 - 7 Developer Manual...
  • Page 31 LXD9781 PQFP Demo Board Figure 16. Serial LED 1 Developer Manual...
  • Page 32 LXD9781 PQFP Demo Board Figure 17. Serial LED 2 Developer Manual...
  • Page 33 LXD9781 PQFP Demo Board Figure 18. Serial LED 3 Developer Manual...

  • Page 34: Mii Converter Fpgas

    LXD9781 PQFP Demo Board Figure 19. MII Converter FPGAs Developer Manual...

  • Page 35: Qstat Fpga

    LXD9781 PQFP Demo Board Figure 20. QSTAT FPGA Developer Manual...
  • Page 36 LXD9781 PQFP Demo Board Figure 21. Capacitors Developer Manual...
  • Page 37 LXD9781 PQFP Demo Board Figure 22. Clock Developer Manual...

  • Page 38: Bill Of Materials

    LXD9781 PQFP Demo Board Bill of Materials Table 17. LXT9781 Bill of Materials Reference Designator Description Part Number BNC1 227699-2 EF Johnson BN1, BN2, BN3 Red Banana Jack 108-0902-001 EF Johnson Black Banana Jack 108-0903-001 Panasonic 10 µ F C1, C2, C5, C7, C10, C14, C31, C37...
  • Page 39 LXD9781 PQFP Demo Board Table 17. LXT9781 Bill of Materials (Continued) Reference Designator Description Part Number Lumex Opto Red LED LDS-A304R1 Panasonic D62 - D139 Green LED LNJ308G8LRA Central Technology FB1, FB2 Ferrite Bead CT-50ACC-322513T F1, F2 Fiber Module HFBR_5903...
  • Page 40 LXD9781 PQFP Demo Board Table 17. LXT9781 Bill of Materials (Continued) Reference Designator Description Part Number R32 - R34, R36, R38, R40, R42, R44, R48 - R55, R58 - RR60, R62, R64, R66, R68, R70, R74 - R81, R84 - R86, R88, R90, R92, R94, R96, R100, R101 - R107, R110 -...
  • Page 41 LXD9781 PQFP Demo Board Table 17. LXT9781 Bill of Materials (Continued) Reference Designator Description Part Number U3, U6, U7, U8, U9, U12, U13, U14, U15, U18, U19, U20, U21, U24, 20-Pin Buffer U25, U26 SN74LVC244ADW Altera U4, U10, U16, U22, U41...

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