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AM7996PCTR Scheda tecnica(PDF) 8 Page - Advanced Micro Devices |
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AM7996PCTR Scheda tecnica(HTML) 8 Page - Advanced Micro Devices |
8 / 18 page AMD 8 Am7996 07506E-6 Notes: 1. CL is the effective load capacitance across R6; CC is the compensation capacitance (CC = 1/3 CL). 2. D2 can be eliminated in Cheapernet (IEEE 802.3, 10BASE2) applications. 3. Shown with SQE Test disabled. 4. Discrete Power Supply or Hybrid-Hybrid DC-DC Converter Manufacturers include: Ethernet (IEEE 802.3, 10BASE5) Reliability: 2E12R9 Valor Electronics: PM1001 Cheapernet (IEEE 802.3, 10BASE2) Reliability Inc: 2VP5U9 Valor Electronics: PM7102 5. The capacitance of C3, Am7996 package, D3 and the printed circuit board should add up to 180 pF ± 20%. 6. The capacitance of C1, Am7996 package and the printed circuit board should add up to 39 pF. 7. R9, R10 and C4 are for Receive Mode Collision detection only. COLL RCV XMT 1:1 1:1 1:1 Power (DTE) (Note 3) 2 3 4 5 GND –9 V 6 7 8 9 10 R1 40.2 Ω 1% R3 174 Ω 9.09 Ω 1% (Note 5) 1N4001 C3 180 pF R10 150 k Ω 1% (Note 1) R9 499 Ω 1% C4 0.1 µF (Note 7) 9.09 Ω 1% 1N4150 D2 D1 CC R6 24.9 k Ω 1% CL (Note 6) C1 39 pF C2 0.1 µF 1% 1% R4 1.1 k Ω Coax Connector 1 20 19 18 17 16 15 14 13 12 11 MAU Power Supply (Note 4) R2 40.2 Ω 1% 1% R7 (75 µH) PE64102/PE64107 (or equivalent) VCC1 CI+ CI– DI+ DI– VCREF SQE^TEST DO+ DO– VEE COLL OSC VCC2 VCOL NC RXT Tap Shield VTX– TXT VTX+ NC R5 75 k Ω (Note 1) D3 (Note 2) Am7996 Figure 3. Am7996 External Component Diagram with Collision Threshold Modified for Receive Mode Collision Detect |
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