lan9221 Standard Microsystems Corp., lan9221 Datasheet - Page 20

• Manufacturer Part Number: lan9221
• Description: High-performance 16-bit Non-pci 10/100 Ethernet Controller With Variable Voltage I/o
• Manufacturer: Standard Microsystems Corp.

Revision 2.6 (12-04-08)
2.2
NUM
PIN
10
12
13
14
11
1
2
3
4
5
6
7
8
9
+3.3V Analog
+1.8V Analog
Core Voltage
Decoupling
NAME
Power
Power
GPIO0/nLED1
GPIO1/nLED2
GPIO2/nLED3
VDD18CORE
VDD33REG
PIN NAME
FIFO_SEL
As detailed in
dependant on the operating voltage. Usage of recommended pull-up/pull-down resistor values is
required to ensure proper operation.
External Pull-Up/Pull-Down Resistors
TEST
A7
A6
A5
A4
A3
A2
A1
VDD18CORE
SYMBOL
VDD33A
VDD18A
Table
NUM
PIN
Table 2.4 System and Power Signals (continued)
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Table 2.5 56-QFN Package Pin Assignments
2.6, when using an external pull-up or pull-down resistor, the required value is
MUST BE CONNECTED TO VSS
VDDVARIO
VDDVARIO
PIN NAME
BUFFER
TYPE
nWR
nRD
nCS
D15
D14
D13
D12
D10
D11
D9
D8
D7
P
P
P
DATASHEET
EXPOSED PAD
20
PINS
NUM
3
1
2
NUM
High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
PIN
29
30
31
32
34
35
36
37
40
41
42
33
38
39
+3.3V analog power supply pins.
+1.8V analog power supply pin. This pin must
+1.8 V from internal core regulator. Both pins
be connected externally to VDD18CORE.
must be connected together externally. Each
pin requires a 0.01uF decoupling capacitor. In
addition, pin 2 requires a bulk 4.7uF capacitor
(<2 Ohm ESR) in parallel. These pins must not
be used to supply power to other external
devices.
EECLK/GPO4
VDD18CORE
EEDIO/GPO3
VDDVARIO
PIN NAME
nRESET
EECS
PME
D6
D5
D4
D3
D2
D1
D0
DESCRIPTION
NUM
PIN
43
44
45
46
47
48
49
50
51
52
53
54
55
56
SMSC LAN9221/LAN9221i
XTAL1/CLKIN
AMDIX_EN
VDDVARIO
PIN NAME
VDD33A
VDD33A
VDD33A
VDD18A
EXRES
XTAL2
TPO+
TPO-
TPI+
TPI-
IRQ
Datasheet