W89C92 Winbond, W89C92 Datasheet
W89C92
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W89C92 Summary of contents
Page 1
... The W89C92 provides transmit, receive, jabber lockup, SQE test, and collision presence functions. The W89C92 provides a functional solution for a 10BASE2 or 10BASE5 MAU. The power isolation requirement of the MAU is met by using a DC-to-DC converter and a one-to-one ratio transformer. Compatible with IEEE 802.3 10BASE2 and 10BASE5 ...
Page 2
... The signal quality error test will be enabled when SQE is tied disabled by changing the SQE bias. V (DIP 10/PLCC 16, 17) (I/P): Positive Power Supply DD A9 VDC power supply is needed. V (DIP 4, 5, 13/PLCC 25) (I/P): Negative Power Supply SS www.DataSheet4U.com . The jabber lockup function can W89C92 internally. A diode ...
Page 3
... Collision 4-pole Bessel Low Pass filter Threshold 10 MHz SQE Heartbeat Oscillator Generator State Jabber Machine Timer Line Driver - 3 - W89C92 Coax. Twisted pair Line W89C92 Transceiver for Coax. Cable Isolation W89C905 TELISA Host Bus DI+ RX DI- RXB CSO+ CD CSO- CDB TX DO+ Transmit Squelch ...
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... The differential pair driver (DI+/DI-) then sends a differential signal corresponding to the AC signal on the coaxial cable. The receiver of the W89C92 receives the signal on the coaxial cable regardless of whether the signal is sent by the W89C92 itself or by another MAU. The receiver of the W89C92 performs a loopback function when the W89C92 is transmitting. ...
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... Transmit propagation delay TD T Transmit rise time, 10 Transmit fall time, 90% to 10% TF www.DataSheet4U.com -1.43 500 - -3.0 -175 (non-transmitting (transmitting 7 0.6 0.8 20 250 Publication Release Date: September 1994 - 5 - W89C92 -1.53 -1. 800 1500 - mV 60 -3.5 -4.0 V -225 -330 mV -80 -100 mA -120 -150 TDC ...
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... Receive propagation delay RD T Diff. output rise time RR T Diff. output fall time RF T Receiver jitter RJ Notes: 1. All voltages are referenced to ground. All currents into device pin are defined as positive. 2. All typical values are given for V www.DataSheet4U.com = -9V and W89C92 140 250 360 ...
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... Input Step Function RXI CSO+/- www.DataSheet4U.com T RON 50 TON TD T TST 50 RXI C = 510 pF R and C network simulates worst case cable 98% step response V (max CON W89C92 50 50 TOFF 90% 10 W89C92 CSO Collision Output Detector V (min COFF T CP Publication Release Date: September 1994 Revision A3 ...
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... Timing Waveforms, continued DO+/- CSO+/- DO+/- TXO CSO+/- Transmit Output (TXO) 25 ohms The 50 H inductance is for testing purposes. Pulse transformers with higher inductances are recommended. www.DataSheet4U.com T SQEON T JA Receive (DI+/-) or Collision (CSO+/-) 510 ohms W89C92 T SQED ohms 5o H 510 ohms V EE ...
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... Input Signal with 30 nS Rise and Fall Times An external MAU can be implemented using the W89C92 and power supply, which may be a DC-to-DC converter. A 12V to 9V DC-to-DC converter is recommended for recovering the voltage drop through the 50-meter AUI twisted pair cable. A 0.1 F decoupling capacitor connected between the 9V output and ground of the converter is recommended ...
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... This extra capacitance may overload the coaxial cable beyond the 2 pF stated in the IEEE 802.3 specification. The RXI trace should be made as thick as possible to reduce the line inductance. The maximum length of the RXI trace, 4 cm, is recommended www.DataSheet4U.com of the W89C92 to reduce line inductance. A good power plane layout will 1.5K Each Converter 16 CSO+ 1 ...
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... Transmit Pair 10 Shields 1, 4 11, 14 www.DataSheet4U.com Shielded Enclosure Converter 510 Each 12 to 15V Input -9V Output . CSO+ CSO DI DI- EQUIV 7 10 DO . W89C92 + 9 V (Isolated) - CLS 16 1 TXO 1N4148 2 15 RXI COAX ER ER SQE 8 9 Publication Release Date: September 1994 Revision A3 ...