- Standard Microsystems Single-Chip Ethernet Controller Specification Sheet

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
SMSC LAN9420/LAN9420i 15 Revision 1.22 (09-25-08)
DATASHEET
Chapter 2 Pin Description and Configuration
Figure 2.1 LAN9420/LAN9420i 128-VTQFP (Top View)
SMSC
LAN9420/LAN9420i
128-VTQFP
TOP VIEW
97
NC
AD15
NC
PAR
nCBE1
VDD33IO
nSERR
nPERR
VSS
nDEVSEL
nSTOP
nIRDY
nTRDY
VSS
VDD33IO
nFRAM E
VSS
AD16
nCBE2
AD18
AD17
VSS
VDD33IO
AD20
AD19
AD22
AD21
VDD33IO
AD23
ID SEL
VSS
nCBE3
NC EECS EECLK/GPO4 EEDIO/GPO3 NC VDD33IO NC AD0 VSS AD2 AD1 AD4 AD3 VDD18CORE VSS VSS VDD33IO AD6 AD5 nCBE0 AD7 VDD33IO AD8 AD9 VSS AD11 AD10 AD13 AD12 VSS VDD33IO AD14
GPIO1/nLED2
VDD33IO
GPIO2/nLED3
VDD33IO
VSS
VDD33IO VDD33IO
VDD18CORE VDD18CORE
VSS VSS
VDD33IO
VSS
PCInRST
nINT
nGNT
PCICLK
nPME nREQ
VDD33IO
VSS
AD30 AD31 AD28 AD29
VSS
AD27 AD26
VDD33IO
AD24 AD25
NC
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
NC
NC
NC
NC
NC
GPIO0/nLED1
VAUXDET
PWRGOOD
XI
XO
VSS
VDD18PLL
VDD18TX
AUTOMDIX_EN
NC
NC
NC
VDD33BIAS
VSS
EXRES
VSS
VDD33A
TPI+
NC
TPI-
VDD33A
VSS
TPO+
TPO-
VSS
NC
NC
NOTE: When HP Auto-MDIX is activated, the TPO+/- pins function as TPI+/- and vice-versa.