SMSC LAN91C92 SCECR manual

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  • Page 1

    APPLICATION NOTE 4.16 PRELIMINARY Rev. 1/13/94 HIGH PERFORMANCE EPP ETHERNET ADAPTER USING THE PPC34C60 PPIC AND LAN91C92 SCECR by Jeffrey C. Dunnihoo DESIGN OVERVIEW: The design described her e showcases the high integration and simplicity of design wit h the LAN91C92 Single Chip Ethernet Controller and the P PC34C60 ECP/EPP Multi-Mode Parallel Po[...]

  • Page 2

    DESIGN FEATURES:  Very simple, compact, and inexpensive design. Two 100-pin PQFPs, 3 crystals, a 10Base-T SMT isolation transformer, a bat te ry (or adapter), and 3 connectors are all that is required for a fully functional system.  PPIC directly drives piezo buzzer for low batt ery detection and EPP inactivity. A 22k resistor on pin 35 forms[...]