LAN9118MT Standard Microsystems (SMSC), LAN9118MT Datasheet - Page 23

• Manufacturer Part Number: LAN9118MT
• Manufacturer: Standard Microsystems (SMSC)

High-Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
SMSC LAN9118
20,28,
42,48,
55,61,
19,27,
34,41,
47,54,
81,85,
77,80,
60,96
86,88
3,65
1,66
NO.
PIN
35,
97
89
11
2
7
4
8
Reference Ground
Internal Regulator
Reference Power
+3.3V I/O Power
Analog Ground
Note 2.1
+3.3V Analog
Core Voltage
Core Ground
PLL Ground
I/O Ground
Decoupling
PLL Power
NAME
Power
Power
Please refer to the SMSC application note AN 12.5 titled “Designing with the LAN9118 -
Getting Started”. It is also important to note that this application note applies to the whole
SMSC LAN9118 family of Ethernet controllers. However, subtle differences may apply.
Table 2.7 System and Power Signals (cont.)
GND_CORE
VDD_CORE
VDD_REF
VSS_REF
VDD_PLL
SYMBOL
VSS_PLL
VDD_IO
GND_IO
VDD_A
VSS_A
VREG
DATASHEET
BUFFER
TYPE
23
P
P
P
P
P
P
P
P
P
P
P
NUM
PINS
1
8
8
3
4
2
2
1
1
1
1
3.3V input for internal voltage
regulator
+3.3V I/O logic power supply pins
Ground for I/O pins
+3.3V Analog power supply pins. See
Note 2.1
Ground for analog circuitry
1.8 V from internal core regulator.
Both pins must be connected together
externally and then tied to a 10uF 0.1-
Ohm ESR capacitor, in parallel with a
0.01uF capacitor to Ground next to
each pin. See
Ground for internal digital logic
1.8V Power from the internal PLL
regulator. This external pin must be
connected to a 10uF 0.1-Ohm ESR
capacitor, in parallel with a 0.01uF
capacitor to Ground. See
GND for the PLL
Connected to 3.3v power and used as
the reference voltage for the internal
PLL
Ground for internal PLL reference
voltage
DESCRIPTION
Note 2.1
Revision 1.0 (03-17-05)
Note 2.1