Filter
Top Products
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
Revision 1.4 (08-19-08) 34 SMSC LAN9311/LAN9311i
DATASHEET
Note 3.7 The input buffers are enabled when configured as GPIO inputs only.
75
Test 1 TEST1 AI Test 1: This pin must be tied to VDD33IO for
proper operation.
108
Test 2 TEST2 AI Test 2: This pin must be tied to VDD33IO for
proper operation.
62
Power
Management
Event
PME O8/OD8 Power Management Event: When programmed
accordingly, this signal is asserted upon detection
of a wakeup event. The polarity and buffer type of
this signal is programmable via the PME_EN bit of
the Power Management Control Register
(PMT_CTRL).
Refer to Chapter 4, "Clocking, Resets, and Power
Management," on page 36 for additional
information on the LAN9311/LAN9311i power
management features.
Table 3.8 PLL Pins
PIN NAME SYMBOL
BUFFER
TYPE DESCRIPTION
107
PLL +1.8V
Power Supply
VDD18PLL P PLL +1.8V Power Supply: This pin must be
connected to VDD18CORE for proper operation.
Refer to the LAN9311/LAN9311i application note
for additional connection information.
105
Crystal Input XI ICLK Crystal Input: External 25MHz crystal input. This
signal can also be driven by a single-ended clock
oscillator. When this method is used, XO should be
left unconnected.
106
Crystal
Output
XO OCLK Crystal Output: External 25MHz crystal output.
Table 3.9 Core and I/O Power and Ground Pins
PIN NAME SYMBOL
BUFFER
TYPE DESCRIPTION
7,13,21,27,
33,39,46,
54,64,66,
72,73,81,
87,93,100
+3.3V I/O
Power
VDD33IO P +3.3V Power Supply for I/O Pins and Internal
Regulator
Refer to the LAN9311/LAN9311i application note
for additional connection information.
3,14,40,65,
74,88,104
Digital Core
+1.8V Power
Supply
Output
VDD18CORE P 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.
Refer to the LAN9311/LAN9311i application note
for additional connection information.
Table 3.7 Miscellaneous Pins (continued)
PIN NAME SYMBOL
BUFFER
TYPE DESCRIPTION