lan9311 Standard Microsystems Corp., lan9311 Datasheet - Page 34

• Manufacturer Part Number: lan9311
• Description: Lan9311/lan9311i Two Port 10/100 Managed Ethernet Switch With 16-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
7,13,21,27,
3,14,40,65,
87,93,100
74,88,104
33,39,46,
54,64,66,
72,73,81,
PIN
108
PIN
107
105
106
PIN
75
62
Note 3.7
Power Supply
Management
+1.8V Power
Crystal Input
Digital Core
PLL +1.8V
+3.3V I/O
Crystal
Output
Supply
Output
NAME
Power
NAME
NAME
Power
Test 1
Test 2
Event
The input buffers are enabled when configured as GPIO inputs only.
Table 3.9 Core and I/O Power and Ground Pins
VDD18CORE
VDD18PLL
Table 3.7 Miscellaneous Pins (continued)
SYMBOL
SYMBOL
SYMBOL
VDD33IO
TEST1
TEST2
PME
XO
XI
Table 3.8 PLL Pins
DATASHEET
BUFFER
BUFFER
BUFFER
O8/OD8
OCLK
TYPE
TYPE
TYPE
ICLK
AI
AI
P
P
P
34
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Test 1: This pin must be tied to VDD33IO for
proper operation.
Test 2: This pin must be tied to VDD33IO for
proper operation.
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
(PMT_CTRL).
Refer to
Management," on page 36
information on the LAN9311/LAN9311i power
management features.
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.
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.
Crystal Output: External 25MHz crystal output.
+3.3V Power Supply for I/O Pins and Internal
Regulator
Refer to the LAN9311/LAN9311i application note
for additional connection information.
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.
Power Management Control Register
Chapter 4, "Clocking, Resets, and Power
DESCRIPTION
DESCRIPTION
DESCRIPTION
for additional
SMSC LAN9311/LAN9311i
Datasheet