High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Table 3.7 Miscellaneous Pins (continued)
BUFFER
PIN
NAME
SYMBOL
TYPE
DESCRIPTION
Test 1
TEST1
AI
Test 1: This pin must be tied to VDD33IO for
proper operation.
75
Test 2
TEST2
PME
AI
Test 2: This pin must be tied to VDD33IO for
108
62
proper operation.
Power
Management
Event
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 LAN9312 power management
features.
Note 3.7 The input buffers are enabled when configured as GPIO inputs only.
Table 3.8 PLL Pins
BUFFER
TYPE
PIN
NAME
SYMBOL
DESCRIPTION
PLL +1.8V
Power Supply
VDD18PLL
P
PLL +1.8V Power Supply: This pin must be
connected to VDD18CORE for proper operation.
107
Refer to the LAN9312 application note for
additional connection information.
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.
105
106
Crystal
Output
XO
OCLK
Crystal Output: External 25MHz crystal output.
Table 3.9 Core and I/O Power and Ground Pins
BUFFER
PIN
NAME
SYMBOL
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 LAN9312 application note for
additional connection information.
Digital Core
+1.8V Power
Supply
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.
3,14,40,65,
74,88,104
Output
Refer to the LAN9312 application note for
additional connection information.
Revision 1.2 (04-08-08)
SMSC LAN9312
DATA3S4HEET
SMSC [ SMSC CORPORATION ]
