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LAN91C100 Datasheet(PDF) 6 Page - SMSC Corporation |
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LAN91C100 Datasheet(HTML) 6 Page - SMSC Corporation |
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6 / 101 page  6 DESCRIPTION OF PIN FUNCTIONSOF PIN FUNCTIONSPIN FUNCTIONS PQFP/TQFP PIN NO. NAME SYMBOL BUFFER TYPE DESCRIPTION 108 nLocal Device nLDEV O16 Output. This active low output is asserted when AEN is low and A4-A15 decode to the LAN91C100 address programmed into the high byte of the Base Address Register. nLDEV is a combinatorial decode of unlatched address and AEN signals. 177 nRead Strobe nRD IS Input. Used in asynchronous bus interfaces. 178 nWrite Strobe nWR IS Input. Used in asynchronous bus interfaces. 190 nData Path Chip Select nDATACS IP Input. When nDATACS is low, the Data Path can be accessed regardless of the values of AEN, A1-A15 and the content of the BANK SELECT Register. nDATACS provides an interface for bursting to and from the LAN91C100 32 bits at a time. 54 EEPROM Clock EESK O4 Output. 4 µsec clock used to shift data in and out of the serial EEPROM. 55 EEPROM Select EECS O4 Output. Used for selection and command framing of the serial EEPROM. 52 EEPROM Data Out EEDO O4 Output. Connected to the DI input of the serial EEPROM. 53 EEPROM Data In EEDI ID Input. Connected to the DO output of the serial EEPROM. 13,15,16 I/O Base IOS0-IOS2 IP Input. External switches can be connected to these lines to select between predefined EEPROM configurations. 51 Enable EEPROM ENEEP IP Input. Enables (when high or open) LAN91C100 accesses to the serial EEPROM. Must be grounded if no EEPROM is connected to the LAN91C100. |
Similar Part No. - LAN91C100 |
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Similar Description - LAN91C100 |
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