Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
Table 3.10 Core and I/O Power and Ground Pins
BUFFER
TYPE
PIN
NAME
SYMBOL
DESCRIPTION
7,13,21,27,
33,39,46,
54,64,66,
72,73,81,
87,93,100
+3.3V I/O
Power
VDD33IO
P
P
+3.3V Power Supply for I/O Pins and Internal
Regulator
Refer to the LAN9313/LAN9313i application note
for additional connection information.
Digital Core
+1.8V Power
Supply
VDD18CORE
Digital Core +1.8V Power Supply Output: +1.8V
power from the internal core voltage regulator. All
VDD18CORE pins must be tied together for proper
operation.
3,14,40,65,
74,88,104
Output
Refer to the LAN9313/LAN9313i application note
for additional connection information.
18,48,80,
97,112,113,
128
Common
Ground
VSS
P
Common Ground
Note 3.15
Note 3.15 Plus external pad for 128-XVTQFP package only
Table 3.11 No-Connect Pins
BUFFER
TYPE
PIN
NAME
SYMBOL
DESCRIPTION
1,2,
57-59,
No Connect
NC
-
No Connect: These pins must be left floating for
normal device operation.
76,94,102,
103,109
Revision 1.2 (04-08-08)
SMSC LAN9313/LAN9313i
DATA4S0HEET
SMSC [ SMSC CORPORATION ]
