LDB901 Universal Demo Board for 10BASE-T and AUI Applications Developer Manual January 2001 As of January 15, 2001, this document replaces the Level One document LDB901 Universal Demo Board for 10BASE-T and AUI Applications. Order Number: 249102-001 Information in this document is provided in connection with Intel® products. 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. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.” Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The LDB901 may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-548-4725 or by visiting Intel's website at http://www.intel.com. Copyright © Intel Corporation, 2001 *Third-party brands and names are the property of their respective owners. LDB901 Universal Demo Board for 10BASE-T and AUI Applications Developer Manual Contents 1.0 General Description .................................................................................................. 5 1.1 2.0 Features ................................................................................................................ 5 Equipment and Setup ............................................................................................... 7 2.1 2.2 2.3 2.4 Equipment Requirements...................................................................................... 7 Test Setup ............................................................................................................. 7 Power Supply ........................................................................................................7 2.3.1 Power Supply Option............................................................................ 8 2.3.1.1 Signal Attenuation Circuitry ....................................................8 Configuration Options............................................................................................ 8 2.4.1 Magnetics ............................................................................................. 8 2.4.1.1 LXT901/901A and LXT907/907A Evaluation ..........................8 2.4.1.2 LXT908 Evaluation .................................................................9 3.0 Test Points ..................................................................................................................10 4.0 Jumpers .......................................................................................................................11 5.0 MAC Controller Capability Modes .....................................................................12 6.0 LED Indicators ...........................................................................................................13 7.0 Bill of Materials and Schematics .......................................................................14 Figures 1 2 3 LDB901 Universal Demo Board ............................................................................ 6 Basic Test Setup ................................................................................................... 7 LDB901 Schematic..............................................................................................15 1 2 3 4 5 6 7 8 Power Supply Configuration.................................................................................. 8 LXT901/901A and LXT907/907A Suitable Magnetics ........................................... 8 LXT908 Suitable Magnetics .................................................................................. 9 LDB901 Test Point Descriptions .........................................................................10 LDB901 Jumper Descriptions..............................................................................11 LDB901 MAC Controller Compatibility Modes ....................................................12 LDB901 LED Descriptions...................................................................................13 LDB901 Bill of Materials ......................................................................................14 Tables LDB901 Universal Demo Board for 10BASE-T and AUI Applications Developer Manual iii Universal Demo Board for 10BASE-T and AUI Applications — LDB901 1.0 General Description The LDB901 Demo Board is a complete working platform that allows system designers to test device performance and functionality prior to board prototyping. The LDB901 can be used to evaluate the LXT901, LXT907, LXT901A, LXT907A or LXT908 Universal Ethernet Transceivers with a few minor modifications to the board. The LDB901 is designed to interface most standard controllers to either 10BASE-T cable or 10BASE-2/10BASE-5 Attachment Unit Interface (AUI) drop cable. The Demo Board supports standard 10Mbps operation or full duplex 20Mbps operation. The LDB901 is configured with a complete set of LED status indicators for major functions. A single 5V supply is required for operation with provision for conversion to 3.3V. This document describes typical Demo Board setup and operating procedures. Before using the Demo Board, review the applicable Universal Ethernet Transceiver data sheet for device functionality and specifications. 1.1 Features • • • • • • • • • • • • Quick setup for complete system demonstration Auto/Manual port (AUI/RJ45) Selection Supports standard 10Mbps operation or full duplex 20Mbps operation Single 5V Operation 4 MAC Controller Capability Modes LED indicators for major functions Loopback Mode Power Down Mode Integrated Manchester Encoder/Decoder Remote Signaling for LXT901/LXT907 only 150Ω Termination for LXT901 and LXT901A only SQE Disable for LXT907, LXT907A and LXT908 only Developer Manual 5 LDB901 — Universal Demo Board for 10BASE-T and AUI Applications Figure 1. LDB901 Universal Demo Board LNK TX RX COL PLR JAB RCMP RLD D1 D2 D3 D4 D5 D6 D7 JP8 JP6 D8 RJAB GNDA J18 D9 JP4 JP2 VCC J2 R11 GND CIN J9 R8 AUTOSEL L1 MD0 PAUI JP7 JP5 JP3 JP1 VCC CIP J10 R9 DON J11 DOP J12 DIN J13 DIP J14 U1 GND TEST MD1 NTH UTP U4 C4 P5 AUI R10 J15 R1 R2 C5 LDB901 TPIN J8 LBSEL J17 TPIP J7 JP12 TPON J3 JP11 U5 J19 GNDA TPOP J5 JP19 6 J16 RJ45 JP13 Developer Manual Universal Demo Board for 10BASE-T and AUI Applications — LDB901 2.0 Equipment and Setup 2.1 Equipment Requirements The LDB901 Demo Board includes all the components needed for a successful evaluation. However, the following additional equipment is recommended: • • • • • 2.2 NetCom System ET-1000 transceiver test box MAU NIC Category 3 or 5 Unshielded Twisted-Pair (UTP) cable Ribbon cable Test Setup Figure 1 shows a typical test setup for the basic operation of the LDB901. The LDB901 is connected to a Network Interface Card (NIC) on the back-end of the board via ribbon cable. The TP cable is connected to a MAU via an RJ45 connector. The MAU plugs into an ET-1000 NetCom Transceiver Test Box via a 15-pin AUI connector. Figure 2. Basic Test Setup LDB901 Ribbon Cable NIC UTP RJ-45 NETCOM ET-1000 MAU Developer Manual 7 LDB901 — Universal Demo Board for 10BASE-T and AUI Applications 2.3 Power Supply The LDB901 Demo Board requires a single 5V power supply. 2.3.1 Power Supply Option The LDB901 is designed with a voltage regulator (JP19) that can be jumpered to supply either 5V or 3.3V to the LXT901, LXT907, LXT901A, LXT907A or LXT908 devices. If pins 1 and 2 are jumpered, 5V operation is selected. If pins 2 and 3 are jumpered, the power supply is converted to 3.3V. Table 1 shows configuration of the jumper circuitry for the transceiver power supply options. 2.3.1.1 Signal Attenuation Circuitry Signal attenuation circuitry (JP20, JP21 and JP22) is provided for 3.3V operation. During 3.3V operation these jumpers should be left open to enable signal attenuation. During 5V operation the jumpers should be installed to bypass signal attenuation. Table 1. Power Supply Configuration Jumper Placement 2.4 Jumper 5V Operation 3.3V Operation JP19 Jumper pins 1 & 2 Jumper pins 2 & 3 JP20 Jumper Installed Jumper Open JP21 Jumper Installed Jumper Open JP22 Jumper Installed Jumper Open Configuration Options The LDB901 Demo Board can be configured for evaluation of either the LXT901, LXT907, LXT901A, LXT907A or LXT908 Universal Transceivers with a few minor modifications. 2.4.1 Magnetics The LDB901 is supplied from the factory with magnetics recommended for the applicable transceiver ordered. Jumpers JP12 and JP13 select the magnetics termination circuitry. These two jumpers and the magnetics themselves are the only modifications required to set up the various Ethernet Transceivers. Configuration for the various evaluation setups are described below. 8 Developer Manual Universal Demo Board for 10BASE-T and AUI Applications — LDB901 2.4.1.1 LXT901/901A and LXT907/907A Evaluation Leave both jumpers open when evaluating the LXT901, LXT907, LXT901A, or LXT907A. This configuration requires magnetics with a 1:√2 ratio for the transmit transformer and a 1:1 ratio for the receive transformer. Table 2 lists some suitable magnetics. Table 2. LXT901/901A and LXT907/907A Suitable Magnetics Manufacturer Part Number Belfuse A553-0716 Fil-Mag 23Z128SM Valor PT4069 TP Transformers 2.4.1.2 LXT908 Evaluation Jumper both JP12 and JP13 when evaluating the LXT908. This configuration requires magnetics with a 1:2 ratio for the transmit transformer and a 1:1 ratio for the receive transformer. Table 3 lists some suitable magnetics. Table 3. LXT908 Suitable Magnetics TP Transformers Developer Manual Manufacturer Part Number Belfuse S553-5999-52 Fil-Mag 23Z118 Valor ST4152 9 LDB901 — Universal Demo Board for 10BASE-T and AUI Applications 3.0 Test Points There are 16 Test Points on the LDB901 Demo Board. Table 4 describes these. Table 4. 10 LDB901 Test Point Descriptions Label Ref Des Description GND J1 Ground. VCCD J2 Digital Power Inputs. TPON J3 Twisted-Pair Output Negative - Differential output to the TP cable. TPOP J5 Twisted-Pair Output Positive - Differential output to the TP cable. TPIP J7 Twisted-Pair Input Positive - Differential input from the TP cable. TPIN J8 Twisted-Pair Input Negative - Differential input from the TP cable. CIN J9 AUI Collision Negative - Differential input to the CI circuit. CIP J10 AUI Collision Positive - Differential input to the CI circuit. DON J11 AUI Output Negative - Differential output to the AUI transceiver cable. DOP J12 AUI Output Positive - Differential output to the AUI transceiver cable. DIN J13 AUI Input Negative - Differential input for the AUI transceiver DI circuit. DIP J14 AUI Input Positive - Differential input for the AUI transceiver DI circuit. VCCA J15 Analog Power Inputs. RJ45 J17 RJ45 Connector. GNDA J18 Analog Ground. GNDA J19 Analog Ground. Developer Manual Universal Demo Board for 10BASE-T and AUI Applications — LDB901 4.0 Jumpers There are 17 jumpers on the LDB901 Demo Board. There are nine 3-pin jumpers that can be set High by placing a jumper across pins 1 and 2 or can be set Low by placing a jumper across pins 2 and 3. There are seven 2-pin jumpers that are either installed or left open and one 3X2 Header (JP11). Table 5 describes these jumpers and their functions. Table 5. Ref Des LDB901 Jumper Descriptions Symbol UTP JP1 (901) DSQE (907/908) Function Unshielded Twisted-Pair: Selects media termination for LXT901 only. Set High to select 100Ω termination for unshielded TP. Set Low to select 150Ω termination for shielded TP. Signal Quality Error Disable: Disables SQE for LXT907 and LXT908 only. Set High to disable SQE. Set Low to enable SQE. JP2 PAUI Port/AUI Selection: Selects active port. Set High to select AUI port. Set Low to select TP port. If Automatic Port Selection is enabled, PAUI is ignored. JP3 NTH Normal Threshold: Set High to select normal TP squelch threshold. Set Low to reduce normal threshold by 4.5dB. JP4 MDO Mode Select 0: Selects controller compatibility mode as specified in Table 6. JP5 MD1 Mode Select 1: Selects controller compatibility mode as specified in Table 6. JP6 LI JP7 TEST JP8 AUTOSEL Link Test Enable: Set High to enable link integrity test. Set Low, link integrity test is disabled. Test: Connect to VCC. Automatic Port Select: With jumper installed automatic port selection is enabled. (When automatic port selection is enabled, the LDB901 defaults to the Twisted-Pair port until the link integrity test fails.) With the jumper open, manual port selection is enabled and PAUI (JP2) determines the active port. JP9 PDN Power Down: This jumper enables Power Down Mode. With the jumper open, Power Down Mode is disabled. JP10 FDE Full Duplex: This jumper enables Full Duplex Mode. With the jumper open, the LDB901 operates in normal half duplex mode. JP11 LBK Loopback: If jumper is placed in pins 2 and 4, standard loopback function is enabled. Data transmitted from the back-end is internally looped back through the device and returned to the backend. JP12 - Transformer Termination: JP12 and JP13 selects transformer termination. Leave both jumpers open when evaluating LXT901 or LXT907. This configuration requires magnetics with a 1:√2 ratio for the transmit transformer and a 1: 1 ratio for the receive transformer. JP13 - JP19 - Voltage Regulator: Jumpers installed on pins 1 and 2 selects 5V operation. Jumpers installed on pins 2 and 3 converts to 3.3V.1 - Voltage Dividers: When jumpers are left open, attenuates the transmitted signals for 3.3V operation. When the jumpers are installed, attenuation circuitry is bypassed. Install both jumpers when evaluating LXT908. This configuration requires magnetics with a 1:2 ratio for the transmit transformer and a 1:1 ratio for the receive transformer. JP20 JP21 JP22 1. JP20, JP21 and JP22 must be left open when operating at 3.3V. Developer Manual 11 LDB901 — Universal Demo Board for 10BASE-T and AUI Applications 5.0 MAC Controller Capability Modes There are 4 Controller Capability Modes that can be selected by placing a jumper in the appropriate pins on JP4 and JP5. See Table 6 for Control Mode jumper placement. Table 6. Controller Mode Mode 1 Mode 2 Mode 3 Mode 4 LDB901 MAC Controller Compatibility Modes JP5 (MD1) JP4 (MD0) For Motorola 68EN360, MPC860, AMD AM7990 or compatible controllers Pins 2 and 3 Pins 2 and 3 (Low) (Low) For Intel 82596 or compatible controllers Pins 2 and 3 Pins 1 and 2 (Low) (High) For Fujitsu MB86950, MB86960 or compatible controllers (Seeq 8005)1 Pins 1 and 2 Pins 2 and 3 (High) (Low) For National Semiconductor 8390 or compatible controllers (TI TMS380C26) Pins 1 and 2 Pins 1 and 2 (High) (High) Controller Manufacturer 1. SEEQ controllers require inverters on CLKI, LBK, RCLK and COL in Mode 3. 12 Developer Manual Universal Demo Board for 10BASE-T and AUI Applications — LDB901 6.0 LED Indicators There are 9 status LEDs on the Demo Board. Remote capability is provided only on the LXT901 and LXT907. LEDs D7, D8 and D9 should be ignored for LXT901A, LXT907A and LXT908. Refer to Table 7 for LED descriptions. Table 7. Label LDB901 LED Descriptions Ref Des Description LNK D1 Link. Indicates Link connection TX D2 Transmit Data. Indicates data being transmitted RX D3 Receive Data. Indicates data being received COL D4 Collision. Indicates collision PLR D5 Polarity Reverse. Indicates reversed polarity on the TP input JAB D6 Jabber. Indicates Jabber state RCMP D7 Remote Signaling Compatibility. Indicates remote signaling compatibility. Ignore for LXT901A, LXT907A and LXT908 RLD D8 Remote Link Down. Indicates remote link failure. Ignore for LXT901A, LXT907A and LXT908 RJAB D9 Remote Jabber. Indicates remote device in Jabber Mode. Ignore for LXT901A, LXT907A and LXT908 Developer Manual 13 LDB901 — Universal Demo Board for 10BASE-T and AUI Applications 7.0 Bill of Materials and Schematics Table 8. LDB901 Bill of Materials Item Qty Reference Description 1 8 C1, C2, C10, C11, C12, C13, C14, C15 2 4 C3, C7, C8, C9 3 3 C4, C5, C6 4 1 D1 5 5 D2, D3, D4, D5, D6 6 3 D7, D8, D9 LED, Yellow 7 9 JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP19 Header 3-pin 8 7 JP9, JP10, JP12, JP13, JP20, JP21, JP22 Header 2-pin 9 1 J16 24-pin DIP Socket 10 1 J17 RJ45 11 15 J1, J2, J3, J5, J7, J8, J9, J10, J11, J12, J13, J15, J17, J18, J19 12 1 P5 13 2 R1, R2, R12, R13, R14, R15, R16, R17 14 2 L1, L2 Ferrite Bead 15 2 R3, R5 25Ω / 1% 16 2 R4, R6 21Ω / 1% 0.1uF / 50V 10uF / 6V, Tantalum 18pF LED, Green LED, Red Test Point (black) Connector DB15 (right angle) 50Ω / 1% 12.4kΩ / 1% 17 1 R7 18 3 R8, R9, R10 78Ω / 1% 19 1 R11 330Ω / 1% 20 4 R21, R23, R24, R26 21 2 R22, R25 2.2kΩ 22 1 U1 7405 1kΩ TP Transformers 23 1 U2 A553-0716-00 for LXT901PC, LXT901APC, LXT907PC or LXT907APC TD74-1406Q for LXT908PC 14 24 1 U4 LXT901PC, LXT901APC, LXT907PC, LXT907APC or LXT908PC 25 1 Y1 Crystal, 20MHz 26 1 JP11 27 1 J14 3X2 Header Test Point (red) Developer Manual Universal Demo Board for 10BASE-T and AUI Applications — LDB901 Figure 3. LDB901 Schematic Developer Manual 15