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W89C982AF датащи(PDF) 4 Page - Winbond |
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W89C982AF датащи(HTML) 4 Page - Winbond |
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4 / 28 page ![]() Preliminary W89C982AF - 4 - PIN DESCRIPTION NETWORK INTERFACE PINS NAME NO. I/O DESCRIPTION DO+ DO- 4 3 O AUI Transmit Output: Differential line driver that sends differential signal to Medium Attached Unit (MAU). These pins require a 270 ohm pull-down resistor to GND. DI+ DI- 98, 97 I AUI Receive Input: Differential receiver that receives the AUI-compliant receive signal from MAU. CI+ CI- 100, 99 I AUI Collision Input: Differential receiver that receives the AUI-compliant collision signal from MAU. DT0+ to DT7+ 5, 11, 15, 20, 63, 68, 72, 78 O Data Positive: Transmit data driver positive that transmits data on the twisted pair line. The driver will source or sink 32 mA. The driver is low during idle. DT0- to DT7- 6, 12, 16, 21, 62, 67, 71, 77 O Data Negative: Transmit data driver negative that transmits inverted data on the twisted pair line. The driver will source or sink 32 mA. Driver is low during idle. DD0+ to DD7+ 8, 13, 17, 23, 60, 66, 70, 75 O Delayed Data Positive: Transmit data driver positive that transmits delayed inverted data on the twisted pair line. The driver will source or sink 32 mA. Driver is low during idle. DD0- to DD7- 9, 14, 18, 24, 59, 65, 69, 74 O Delayed Data Negative: Transmit data driver negative that transmits delayed data on the twisted pair line. The driver will source or sink 32 mA. Low during idle. RD0+ to RD7+ 96, 93, 91, 89, 86, 84, 82, 80 I Twisted Pair Line Receive Positive: Positive data from the twisted pair line are received by the internal receiver through this pin. RD0- to RD7- 95, 92, 90, 88, 85, 83, 81, 79 I Twisted Pair Line Receive Negative: Negative data from the twisted pair line are received by the internal receiver through this pin. INTER-IMPR II INTERFACE PINS ICRS 46 O Inter-IMPR II Carrier Output: The inter-IMPR II carrier (an active low on this pin) will be present when the IMPR II is repeating packets. The IMPR IIs output this signal to the interface of inter-IMPR II for retransmitting valid packets or propogating network collision messages to other IMPR IIs. |
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