®
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)
SIGNAL
NAME
32-QFN
PIN #
TYPE
DESCRIPTION
Transmit/Receive Negative Channel 1.
TXN
RXP
RXN
28
31
30
AIO
AIO
AIO
Transmit/Receive Positive Channel 2.
Transmit/Receive Negative Channel 2.
3.6
Analog Reference
Table 3.7 Analog References 32-QFN
SIGNAL
NAME
32-QFN
PIN #
TYPE
DESCRIPTION
RBIAS
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
Table 3.8 Power Signals 32-QFN
SIGNAL
NAME
32-QFN
PIN #
TYPE
DESCRIPTION
12
P
+1.6V to +3.6V Variable I/O Pad Power
VDDIO
VDDCR
6
P
+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.
VDD1A
VDD2A
VSS
27
1
P
P
+3.3V Analog Port Power to Channel 1.
+3.3V Analog Port Power to Channel 2 and to internal regulator.
FLAG
GND
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)
SMSC LAN8710/LAN8710i
DATA1S8HEET
SMSC [ SMSC CORPORATION ]
