LAN8700 Ver la hoja de datos (PDF) - SMSC -> Microchip
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LAN8700 Datasheet PDF : 73 Pages
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±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWRTM in a Small Footprint
Datasheet
Table 3.6 10/100 Line Interface
SIGNAL NAME
TXP
TXN
RXP
RXN
TYPE
AO
AO
AI
AI
DESCRIPTION
Transmit Data Positive: 100Base-TX or 10Base-T differential
transmit outputs to magnetics.
Transmit Data Negative: 100Base-TX or 10Base-T differential
transmit outputs to magnetics.
Receive Data Positive: 100Base-TX or 10Base-T differential
receive inputs from magnetics.
Receive Data Negative: 100Base-TX or 10Base-T differential
receive inputs from magnetics.
SIGNAL NAME
EXRES1
Table 3.7 Analog References
TYPE
AI
DESCRIPTION
Connects to reference resistor of value 12.4K-Ohm, 1%
connected as described in the Analog Layout Guidelines.
SIGNAL NAME
VDDIO
VDD33
VDDA3.3
VDD_CORE
VSS
Table 3.8 Power Signals
TYPE
DESCRIPTION
POWER +1.6V to +3.6V Variable I/O Pad Power
POWER
POWER
POWER
POWER
+3.3V Core Regulator Input.
+3.3V Analog Power
+1.8V (Core voltage) - 1.8V regulator output for digital circuitry
on chip. Place a 0.1uF capacitor near this pin and connect the
capacitor from this pin to ground. In parallel, place a 4.7uF
±20% low ESR capacitor near this pin and connect the capacitor
from this pin to ground. X5R or X7R ceramic capacitors are
recommended since they exhibit an ESR lower than 0.1ohm at
frequencies greater than 10kHz.
Exposed Ground Flag. The flag must be connected to the
ground plane with an array of vias as described in the Analog
Layout Guidelines
SMSC LAN8700/LAN8700I
17
DATASHEET
Revision 1.0 (02-09-07)
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