WJLXT908LE.A4-865811 Cortina Systems Inc, WJLXT908LE.A4-865811 Datasheet
WJLXT908LE.A4-865811
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WJLXT908LE.A4-865811 Summary of contents
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver The LXT908 Universal 10BASE-T and AUI Transceiver (call hereafter LXT908 Transceiver) is designed for IEEE 802.3 physical layer applications. It provides all the active circuitry to interface most standard 802.3 ...
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INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY Legal Lines and Disclaimers ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS ...
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Contents 1.0 Pin Assignments and Signal Descriptions ....................................................................8 2.0 Functional Description .................................................................................................. 12 2.1 Introduction.......................................................................................................... 12 2.1.1 Controller Compatibility Modes .............................................................. 12 2.1.2 Transmit Function................................................................................... 12 2.1.3 Jabber Control Function .........................................................................13 2.1.4 Receive Function.................................................................................... 14 2.1.5 SQE Function ......................................................................................... 14 ...
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Contents Figures 1 Block Diagram ....................................................................................................... 7 2 Pin Assignments ................................................................................................... 8 3 TPO Output Waveform ....................................................................................... 13 4 Jabber Control Function ...................................................................................... 14 5 SQE Function ..................................................................................................... 15 6 Collision Detection Function ............................................................................... 17 7 Transmitted Link Integrity Pulse ...
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Sample Pb-Free (RoHS-Compliant) LQFP Package - ® Intel LXT908 Transceiver .................................................................................. 43 50 Sample PLCC Package - Intel 51 Sample Pb-Free (RoHS-Compliant) PLCC Package - ® Intel LXT908 Transceiver .................................................................................. 44 52 Ordering Information - Sample ............................................................................ 46 Tables ...
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Contents Revision History Date Revision 29-Oct-2005 June 2001 6 Page Added Section 5.1, “Top-Label Table 48 “Sample LQFP Package - Intel® LXT908 Transceiver” 43 and Table 49 “Sample Pb-Free (RoHS-Compliant) LQFP Package - Intel® LXT908 Transceiver” 003 45 Modified Table ...
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Figure 1. Block Diagram AUTOSEL MODE SELECT LOGIC Controller PAUI Compatibility/ Port Select / LBK Loopback / LI Link test TCLK CLKI XTAL OSC CLKO MANCHESTER ENCODER TEN TXD CD SQUELCH / LINK LEDL DETECT RXD MANCHESTER RCLK DECODER COLLISION ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver 1.0 Pin Assignments and Signal Descriptions Figure 2. Pin Assignments n JAB TEST 10 TCLK 11 LXT908PC/PE XX TXD 12 Part # FPO # XXXXXXXX TEN ...
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Table 1. Signal Descriptions (Sheet Pin# Symbol PLCC LQFP – 16, 17, 18, 20, 30, 31, 32, ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Table 1. Signal Descriptions (Sheet Pin# Symbol PLCC LQFP LEDT LEDC – 40 GNDA 24 ...
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Table 1. Signal Descriptions (Sheet Pin# Symbol PLCC LQFP Datasheet Document #: 249049 Revision #: 003 Rev. Date: 29-Oct-2005 ® Intel LXT908 Universal 3.3 V 10BASE-T and ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver 2.0 Functional Description 2.1 Introduction The LXT908 Universal 10BASE-T and AUI Transceiver performs the physical layer signaling (PLS) and Media Attachment Unit (MAU) functions as defined by the IEEE 802.3 ...
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An internal continuous resistor-capacitor filter is used to remove any high-frequency clocking noise from the pulse shaping circuitry. Integrated filters simplify the design work required for FCC-compliant EMI performance. ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 4. Jabber Control Function Nonjabber Output Start_XMIT_MAX_Timer DO=Idle XMIT=Disable LPBK=Disable Unjab Wait Start_Unjab_Timer XMIT=Disable LPBK=Disable Unjab_ Timer_Done 2.1.4 Receive Function ® The Intel LXT908 Universal 3.3 V 10BASE-T and ...
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SQE is enabled, the Intel Transceiver transmits the SQE signal for 10BT ± 5BT over the internal CI circuit, which is indicated on the COL pin of the device. SQE must be disabled for normal operation in hub ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver ® Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver from the TXD pin through the Manchester encoder/decoder to the RXD pin and returned to the back-end. This “normal” loopback ...
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Note: For full-duplex operation, the collision detection circuitry must be disabled. Figure 6. Collision Detection Function DO=Active ∗ TPI=Idle ∗ XMIT=Enable Output TPO=DO DI=DO DO=Active ∗ TPI=Active ∗ XMIT=Enable A DO=Idle + XMIT=Disable DO=Active ∗ TPI=Idle 2.1.9 Link Pulse Transmission ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver If no serial data stream or link integrity pulses are detected within 50 - 150 ms, the chip enters a link fail state and disables the transmit and normal loopback ...
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Application Information Figure 9 on page 20 through 10BASE-T and AUI Transceiver applications. 3.1 External Components 3.1.1 Crystal Information Suitable crystals are available from various manufacturers. limited evaluation. Designers should test and validate all crystals before using them in ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Status outputs are grouped at the lower left of the diagram. Line status outputs drive LED indicators and the Jabber and Polarity status indicators are available, as required. Power and ...
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Full Duplex Support Figure 10 shows the Intel Instruments 380C24 CommProcessor. The 380C24 is compatible with Mode 4 (MD2:0 = Low, High, High). When used with the 380C24 or other full- duplex-capable controllers, the Intel LXT908 Universal 3.3 V ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver 3.2.3 Dual Network Support-10Base T and Token Ring Figure 11 shows the Intel Instruments 380C26 CommProcessor. The 380C26 is compatible with Mode 4 (MD2:0 = Low, High, High). When used ...
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Manual Port Select & Link Test Function When MD2:0 = Low, High, Low, the Intel Transceiver logic and framing are set to Mode 3 (compatible with Fujitsu MB86950 and MB86960, and Seeq 8005 controllers). on page 24 shows the ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 13. Manual Port Select with Seeq 8005 Controller External 20 MHz Source CLKI LPBK CSN 8005 RxD RxC COLL TxEN TxC TxD Port Selection PROGRAMMING OPTIONS MODE SELECT LINE ...
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Three Media Application Figure 14 shows the Intel (compatible with Intel 82596 controllers) with additional media options for the AUI port. Two transformers are used to couple the AUI port to either a D-connector or a BNC connector. (A ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver 3.2.6 AUI Encoder/Decoder Only In the application shown in AUTOSEL is tied Low and PAUI is tied High, manually selecting the AUI port. The twisted-pair port is not used. With ...
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Test Specifications Note: Table 4 through Table 13 on page 30 represent the performance specifications of the Intel AUI Transceiver. These specifications are guaranteed by test except where noted “by design.” Minimum and maximum values listed in recommended operating ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Table 6. I/O Electrical Characteristics (Continued) Parameter Output fall time TCLK & RCLK CLKI rise time (externally driven) CLKI duty cycle (externally driven) Normal Mode Supply current Power Down 1. ...
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Table 8. Twisted-Pair Electrical Characteristics (Continued) Parameter Receive input impedance Differential Squelch Threshold 1. Typical values are at 25°C and are for design aid only, are not guaranteed, and are not subject to production testing. 2. Parameter is guaranteed by ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Table 11. RCLK/End-of-Frame Timing Parameter RCLK after CD off RXD throughput delay 2 CD turn off delay Receive block out after TEN off RCLK switching delay after CD off (Mode ...
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Timing Diagrams for Mode 1 (MD2 Low, Low, Low) Figures Figure 16. Mode 1 RCLK/Start-of-Frame Timing 1 TPIP/TPIN or DIP/DIN t CD RCLK RXD Note: RXD changes 25 ns after the rising edge ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 18. Mode 1 Transmit Timing TEN TCLK TXD TPO Figure 19. Mode 1 Collision Detect Timing CI t COLD COL Figure 20. Mode 1 COL/SQE Output Timing/CI Output Timing ...
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Timing Diagrams for Mode 2 (MD2 Low, Low, High) Figures Figure 22. Mode 2 RCLK/Start-of-Frame Timing 1 0 TPIP/TPIN or DIP/DIN RCLK RXD Note: RXD changes at the rising edge ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 24. Mode 2 Transmit Timing TEN TCLK TXD TPO Figure 25. Mode 2 Collision Detect Timing CI COL Figure 26. Mode 2 COL/SQE Output Timing TEN COL Figure 27. ...
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Timing Diagrams for Mode 3 (MD2 Low, High, Low) Figures Figure 28. Mode 3 RCLK/Start-of-Frame Timing 1 0 TPIP/TPIN or DIP/DIN RCLK Generated from TCLK RXD Note: RXD changes at ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 30. Mode 3 Transmit Timing TEN TCLK TXD TPO Figure 31. Mode 3 Collision Detect Timing CI t COLD COL Figure 32. Mode 3 COL/SQE Output Timing TEN COL ...
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Timing Diagrams for Mode 4 (MD2 Low, High, High) Figures Figure 34. Mode 4 RCLK/Start-of-Frame Timing 1 0 TPIP/TPIN or DIP/DIN RCLK RXD Note: RXD changes at the rising edge ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 36. Mode 4 Transmit Timing TEN TCLK TXD TPO Figure 37. Mode 4 Collision Detect Timing CI COL Figure 38. Mode 4 COL/SQE Output Timing TEN COL Figure 39. ...
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Timing Diagrams for Mode 5 (MD2 High, High, Low) Figures Figure 40. Mode 5 RCLK/Start-of-Frame Timing 1 0 TPIP/ TPIN RCLK Generated from TCLK RXD Note: RXD changes at the ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 42. Mode 5 Transmit Timing TEN TCLK TXD TPO Figure 43. Mode 5 Collision Detect Timing CI COL Figure 44. Mode 5 COL/SQE Output Timing TEN COL Figure 45. ...
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Package Specifications Figure 46. 44-Pin PLCC Package Specifications • Part Number LXT908PC - Commercial temperature range (0°C to +70°C) • Part Number LXT908PE - Extended temperature range (-40°C to +85°C) Inches Dim Min Max A 0.165 0.180 A 0.090 ...
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Figure 47. 64-Pin LQFP Package Specifications 64-Pin Low-Profile Quad Flat Package • Part Number LXT908LC (Commercial Temperature Range) • Part Number LXT908LE (Extended Temperature Range) Inches Dim Min Max A – 0.063 A1 0.002 0.006 A2 0.053 0.057 B 0.007 ...
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Top-Label Marking Figure 48 shows a sample LQFP package for the LXT908 Transceiver. Note: In contrast to the Pb-Free (RoHS-compliant) LQFP packages, the non-RoHS-compliant packages do not have the “e3” symbol in the last line of the package label. ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 50 shows a sample PLCC package for the LXT908 Transceiver. Note: In contrast to the Pb-Free (RoHS-compliant) PLCC packages, the non-RoHS-compliant packages do not have the “e3” symbol in ...
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... Product Ordering Information Table 14 lists product ordering information for the Intel AUI Transceiver. Table 14. Product Information Number DJLXT908LC.A4 WJLXT908LC.A4 DJLXT908LE.A4 WJLXT908LE.A4 NLXT908PC.A4 EELXT908PC.A4 NLXT908PE.A4 EELXT908PE.A4 Datasheet Document #: 249049 Revision #: 003 Rev. Date: 29-Oct-2005 ® Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver ® ...
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Intel LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver Figure 52 shows an order matrix with sample information for ordering an Intel 3.3 V 10BASE-T and AUI Transceiver. Figure 52. Ordering Information - Sample DJ LXT 46 908 L ...