LAN8710 Datasheet, PDF (18/79 Pages) SMSC Corporation – MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR Technology in a Small Footprint

SIGNAL
NAME
TXN
RXP
RXN
MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR^® Technology in a Small Footprint
Datasheet
Table 3.6 10/100 Line Interface Signals (continued) 32-QFN (continued)
32-QFN
PIN # TYPE
DESCRIPTION
28
AIO Transmit/Receive Negative Channel 1.
31
AIO Transmit/Receive Positive Channel 2.
30
AIO Transmit/Receive Negative Channel 2.
3.6
Analog Reference
SIGNAL
NAME
RBIAS
Table 3.7 Analog References 32-QFN
32-QFN
PIN # TYPE
DESCRIPTION
32
AI External 1% Bias Resistor. Requires a 12.1k ohm (1%) resistor to ground
connected as described in the Analog Layout Guidelines. The nominal
voltage is 1.2V and the resistor will dissipate approximately 1mW of power.
3.7
Power Signals
SIGNAL
NAME
VDDIO
VDDCR
VDD1A
VDD2A
VSS
Table 3.8 Power Signals 32-QFN
32-QFN
PIN # TYPE
DESCRIPTION
12
P +1.6V to +3.6V Variable I/O Pad Power
6
27
1
FLAG
P
P
P
GND
+1.2V (Core voltage) - 1.2V for digital circuitry on chip. Supplied by the on-
chip regulator unless configured for regulator off mode using the
LED1/REGOFF pin. A 1uF decoupling capacitor to ground should be used on
this pin when using the internal 1.2V regulator.
+3.3V Analog Port Power to Channel 1.
+3.3V Analog Port Power to Channel 2 and to internal regulator.
The flag must be connected to the ground plane with a via array under the
exposed flag. This is the ground connection for the IC.
Revision 1.0 (04-15-09)
18
DATASHEET
SMSC LAN8710/LAN8710i