AM7996JC Advanced Micro Devices, AM7996JC Datasheet
AM7996JC
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AM7996JC Summary of contents
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FINAL Am7996 IEEE 802.3/Ethernet/Cheapernet Transceiver DISTINCTIVE CHARACTERISTICS Compatible with Ethernet Version 2 and IEEE 802.3 10BASE-5 and10BASE-2 specifications Pin-selectable SQE Test (heartbeat) option Internal jabber controller prevents excessive transmission time GENERAL DESCRIPTION The Am7996 IEEE 802.3/Ethernet/Cheapernet Trans- ceiver suppor ts ...
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AMD RELATED PRODUCTS Part No. Description Am79C98 Twisted Pair Ethernet Transceiver (TPEX) Am79C100 Twisted Pair Ethernet Transceiver Plus (TPEX+) Am79C981 Integrated Multiport Repeater Plus Am79C987 Hardware Implemented Management Information Base Am79C940 Media Access Controller for Ethernet (MACE ) Am79C90 CMOS ...
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ORDERING INFORMATION Standard Products AMD standard products are available in several packages and operating ranges. The order number (valid combination) is formed by a combination of the elements below. AM7996 DEVICE NUMBER/DESCRIPTION Am7996 IEEE 802.3/Ethernet/Cheapernet Transceiver Valid Combinations PC, PCB, ...
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PIN DESCRIPTION Attachment Unit Interface (AUI) Dl+, Dl– Receive Line Output (Differential Outputs) This pair is intended to operate into terminated 78 transmission lines. Signals at RXT meeting bandwidth requirements and carrier sense levels are outputted Signaling ...
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FUNCTIONAL DESCRIPTION The Am7996 IEEE 802.3/Ethernet/Cheapernet Trans- ceiver consists of four sections: 1) Transmit—receives signals from DTE and sends it to the coaxial medium; 2) Receive—obtains data from media and sends it to DTE; 3) Collision Detect—indicates to DTE any ...
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AMD APPLICATIONS The Am7996 is compatible with Ethernet Version 2 and IEEE 802.3 10BASE5 and 10BASE2 applications. (See Figure 1). Ethernet Local Local CPU Memory Local Bus AUI - Attachment Unit Interface DTE - Data Terminal Equipment MAU - Media ...
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Figure external component diagram showing how to implement the transmit mode collision detect levels recommended by IEEE 802.3. Figure 3 on the following page shows how to implement the receive mode collision detect levels recommended by IEEE ...
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AMD PE64102/PE64107 (or equivalent) (75 H) 1:1 COLL 1:1 RCV 1:1 R1 40.2 1% XMT R2 40.2 1% Power (DTE) MAU Power Supply (Note 4) Notes the effective load capacitance across R6 can ...
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LAYOUT CONSIDERATIONS To protect the transceiver from the environment and to achieve optimum performance, the Am7996 is designed to be used with two sets of external components: the transmitter circuit consisting of components D1, D2, D3, R7, R8, and C3, ...
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ABSOLUTE MAXIMUM RATINGS Storage Temperature . . . . . . . . . . . Ambient Temperature Under Bias . . . . . . . . . . . . . . . . . . . . ...
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AMD DC CHARACTERISTICS over operating ranges unless otherwise specified Parameter Symbol Parameter Description Transmit Signals V Transmit Output HIGH Voltage (Note 1) TXTH V Transmit Output LOW Voltage (Note 1) TXTL V Transmit Average DC Voltage with 50% TXT Duty-Cycle ...
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SWITCHING CHARACTERISTICS over operating ranges unless otherwise specified Parameter No Symbol Parameter Description Receiver Specification Input Pulse Width to Reject PWREJ (DO V IDC Input Pulse Width to Turn On PWTON (DO > V ...
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AMD Notes: 1. Parameters are measured at coax tap. In production test, parameters are measured across at 25 coax tap. 2. For conditions shown as Min or Max, use the appropriate value specified under Operating Range for the applicable device ...
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KEY TO SWITCHING WAVEFORMS SWITCHING TEST CIRCUIT WAVEFORM INPUTS Must be Steady May Change from May Change from Don’t Care, Any Change Permitted Does Not Apply 1/3 PE64102/PE64107 (or equivalent) + DUT 78 R ...
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AMD SWITCHING WAVEFORMS DO± V IDC 2 COAX TAP (Transmit) 5 NEAR END V CAT max COAX TAP (Receive) DI± 90% 10 Transmit Function 50 Receiver Function Am7996 ...
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SWITCHING WAVEFORMS DO± COAX TAP (Transmit) CI± * SQE^TEST pin connected DO± COAX TAP (Transmit) CI± SQE Test* 50% 13 Jabber Function Am7996 AMD TXTL –V ...
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AMD SWITCHING WAVEFORMS DI± CI± CI± 23 1/f CI COAX TAP V COT MAX CI± 21 Note: This signal is used for test purposes. It represents the average value of the signal that might be seen on the coax tap ...