LAN9218I_12 Datasheet, PDF (19/134 Pages) SMSC Corporation – High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support

High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
Datasheet
NAME
PLL Power
PLL Ground
Reference Power
Reference Ground
Table 2.5 System and Power Signals (continued)
SYMBOL
VDD_PLL
VSS_PLL
BUFFER
TYPE
P
P
NUM
PINS
1
1
DESCRIPTION
+1.8V Power from the internal PLL regulator.
This pin must be connected to a 10uF capacitor
(<2 Ohm ESR), in parallel with a 0.01uF
capacitor to ground. This pin must not be used
to supply power to other external devices. See
Note 2.1.
GND for the PLL
VDD_REF
P
1
Connected to 3.3v power and used as the
reference voltage for the internal PLL
VSS_REF
P
1
Ground for internal PLL reference voltage
Note 2.1 Please refer to the SMSC application note AN14.10 - “Migrating from LAN9118 to the
LAN9218I” for additional details.
SMSC LAN9218i
19
DATASHEET
Revision 2.9 (03-01-12)