AM79C100 Advanced Micro Devices, AM79C100 Datasheet
AM79C100
Available stocks
Related parts for AM79C100
AM79C100 Summary of contents
Page 1
... A network based on the 10BASE-T standard can use unshielded twisted-pair cables, providing an economi- cal solution to networking by allowing the use of existing telephone wiring. The Am79C100 provides a minimal component count and a cost-effective solution to the design and implementation of 10BASE-T standard networks. ...
Page 2
... Detection and Auto Correction Voltage Controlled Oscillator TM (C-LANCE (ILACC ) (IMR (HIMIB ) Am79C100 AMD TXD+ Line Driver TXD– and TXP+ Predistortion TXP– Link Test State Machine Line Receiver RXD+ and RXD– Smart Squelch LRT Twisted-Pair Interface 16511B-1 ...
Page 3
... TXD+ DO– TXP+ DI+ TXD– DI– TXP– CI+ RXD+ Am79C100 CI– RXD– LRT SQE TEST RXPOL TEST1 LNKST TEST2 XMT REXT RCV PRDN/RST COL Am79C100 TXP– TEST2 TEST1 SQE TEST LRT AV DD 16511B-2 Twisted-Pair Interface 16511B-3 3 ...
Page 4
... J = 28-Pin Plastic Leaded Chip Carrier (PL 028) SPEED Not Applicable Valid combinations list configurations planned to be sup- JC ported in volume for this device. Consult the local AMD sales office to confirm availability of specific valid combinations and to check on newly released combinations. Am79C100 Valid Combinations ...
Page 5
... RCV Receive Output, Open Drain This pin is driven LOW while TPEX Plus is receiving data on the twisted-pair RXD pins and is transferring the received signal onto the AUI DI pair. The output is LOW during collision simultaneously with the COL pin. Am79C100 5 ...
Page 6
... TXD/TXP pins. The output is LOW during collision si- multaneously with the COL pin. In the LOW output state, the pin is capable of sinking a maximum and can be used to drive an LED. The XMT output is pulse stretched for after the end of trans- mission, to ensure LED visibility. Am79C100 ...
Page 7
... TPEX Plus also imple- ments a number of features in addition to the IEEE 802.3 standard. An outline of the functions of the Am79C100 is given below. Attachment Unit Interface ( The AUI electrical and functional characteristics com- ply with those specified within the IEEE 802.3 docu- ments, Sections 7 and 14 ...
Page 8
... RXD The CI output pair stays HIGH for 2 bit times at the end of a collision, decreasing to the idle level within 80 bit times after the last transition. The XMT, RCV, and COL pins are driven LOW during collision. Am79C100 ...
Page 9
... The filters and pulse transformers are necessary devices that have a major influence on the performance and compliance of a TPEX Plus-based MAU. Specifically, the transmitted waveforms are heavily influenced by filter characteris- tics and the twisted-pair receivers employ several Am79C100 9 ...
Page 10
... Several manufacturers produce a module that com- bines the functions of the transmit and receive filters and the pulse transformers into one package. 57.6 1:1 324.0 TD+ XMIT 768.0 Filter 57.6 TD– 324.0 1:1 RD+ RECV Filter 100 RD– Module Am79C100 Twisted-Pair Cable 16511B-4 ...
Page 11
...
Page 12
... HIGH Note: 1. During Loopback, the COL pin does not indicate collision, but instead provides indication of TXD ± /TXP ± activity. For details, refer to the section titled “Test Modes.” Figure 3. Am79C100 TPEX Plus Loopback Operation 12 RCV TXD±/TXP± DO± ...
Page 13
... AMD SYSTEM APPLICATIONS Am79C100 13 ...
Page 14
... NP6581 Nano pulse NP6696 TDK TLA 470 TDK HIM3000 Pulse Engineering PE65421 Pulse Engineering SUPRA 1.1 Bel Fuse 0556-6392-00 Table 2. Am79C100 TPEX Plus Compatible AUI Transformers Manufacturer Part # Bel Fuse A553-0506-AB Valor Electronics LT6031 TDK TLA 100-3E Pulse Engineering PE64106 14 Package Description 16-pin 0.3” ...
Page 15
... V < < Vin < (Note (Note (Note Am79C100 ): . . . . . . . . . . . . . . . . + 0 +0 Min Max Unit 0.8 V 2 500 10 –500 ...
Page 16
... (Note 24 EXT PRDN/RST = HIGH PRDN/RST = LOW PRDN/RST = HIGH PRDN/RST = LOW Am79C100 AMD Min Max Unit –500 500 –3.0 Av –1 –3.1 3.1 V 300 520 mV –520 –300 mV 150 293 mV – ...
Page 17
... Steady State t TSD (Note 1) Steady State t TSD (Note 1) Steady State t TSD (Note 1) Steady State t TSD (Note (Note 1) 75 (Note 250 (Note 1) 1.0 Am79C100 Max Unit 35 ns 200 ns 300 ns 120 ns 450 – 1 1.0 ns TSD – 1 1.0 ns ...
Page 18
... RXD carrier sense on; pulses wider than t PWKRD internal RXD carrier sense off. 18 Test Conditions V >V min IN THS (Note 5) Tested with 5 MHz Sinusoid (Note 1) (Note 1) – Am79C100 Min Max 136 200 200 400 t + 100 RON 70 200 t – 2 2.5 RSD RSD t – ...
Page 19
... DV SS DI+ DI– CI+ CI– TXP+ Test Point TXP– Includes test jig capacitance 16511B-8 Twisted Pair Transmit Test Circuit AV DD 52.3 Test Point 154 16511B-10 AUI Transmit Test Circuit Am79C100 DV DD 715 Test Point 715 100 16511B-9 19 ...
Page 20
... WAVEFORM INPUTS Must be Steady May Change from May Change from Don’t Care, Any Change Permitted Does Not Apply Am79C100 OUTPUTS Will be Steady Will be Changing from Will be Changing from Changing, State Unknown Center Line is High- Impedance “Off” State ...
Page 21
... SWITCHING WAVEFORMS t PWODO DO± V ATH+ V ASQ(min) V ASQ(max) t PWKDO TXD+ TXP+ t THDP TXD- t TON TXP- t XMTON XMT t DODION DI± TXD+ TXP+ TXD- TXP- t PWLP V ATH TLDP Transmit Timing t PWPLP t PERLP Transmit Link Beat Pulse Am79C100 t PWKDO TETD t XMTOFF t DODISD 16511B-11 16511B-12 21 ...
Page 22
... SWITCHING WAVEFORMS RXD± t RON DI+ DI– t RCVON RCV RXD± RXD± PWKRD V TSQ– RHD RLD RF Receive Timing Receive Thresholds Am79C100 AMD t PWKRD V TSQ RETD RCVOFF 16511B-13 V TSQ+ V THS+ V THS– V TSQ– V LTSQ+ V ...
Page 23
... AMD SWITCHING WAVEFORMS DO± RXD± CI+ CI– t COLON COL DO± CI+ CI– COL = 1 t CON t CPW Collision Timing t SQED SQE Test Timing Am79C100 t COFF t COLOFF t CPER 16511B-15 t SQEL 16511B-16 23 ...
Page 24
... Copyright © 1998 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are trademarks of Advanced Micro Devices, Inc. Am186, Am386, Am486, Am29000, b IMR, eIMR, eIMR+, GigaPHY, HIMIB, ILACC, IMR, IMR+, IMR2, ISA-HUB, MACE, Magic Packet, PCnet, PCnet- FAST , PCnet- FAST +, PCnet-Mobile, QFEX, QFEXr, QuASI , QuEST, QuIET, TAXIchip, TPEX, and TPEX Plus are trademarks of Advanced Micro Devices, Inc ...