LAN9217-MT-E2 SMSC [SMSC Corporation], LAN9217-MT-E2 Datasheet - Page 17

• Manufacturer Part Number: LAN9217-MT-E2
• Description: 16-bit High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
• Manufacturer: SMSC [SMSC Corporation]

16-bit High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
Datasheet
SMSC LAN9217
NO.
PIN
95
70
6
5
Wakeup Indicator
Crystal 1
Crystal 2
NAME
Reset
Table 2.5 System and Power Signals (continued)
SYMBOL
nRESET
XTAL1
XTAL2
PME
DATASHEET
BUFFER
O8/OD8
TYPE
(PU)
Oclk
lclk
17
IS
PINS
NUM
1
1
1
1
External 25MHz Crystal Input.
Can also be connected to single-
ended TTL oscillator. If this method is
implemented, XTAL2 should be left
unconnected.
External 25MHz Crystal output.
Active-low reset input. Resets all
logic and registers within the
LAN9217
high with a weak internal pull-up
resistor. If nRESET is left
unconnected, the LAN9217 will
rely on its internal power-on reset
circuitry
Note:
When programmed to do so, is
asserted when the LAN9217 detects
a wake event and is requesting the
system to wake up from the
associated sleep state. The polarity
and buffer type of this signal is
programmable.
Note:
The LAN9217 must always
be read at least once after
power-up, reset, or upon
return from a power-saving
state or write operations will
not function. See
3.12, "Detailed Reset
Description," on page 39
additional information
Detection of a Power
Management Event, and
assertion of the PME signal
will not wakeup the
LAN9217. The LAN9217
will only wake up when it
detects a host write cycle
(assertion of nCS and
nWR). Although any write to
the LAN9217, regardless of
the data written, will wake-
up the device when it is in a
power-saving mode, it is
required that the
BYTE_TEST register be
used for this purpose.
.
DESCRIPTION
This signal is pulled
Revision 1.5 (07-18-06)
Section
for