co661al-l Connect One Ltd., co661al-l Datasheet - Page 21

• Manufacturer Part Number: co661al-l
• Description: The Co661al-l Ichip Lan? Internet Controller? Is Part Of A Family Of Intelligent Peripheral Devices That Provides Internet Connectivity Solutions To A Myriad Of Embedded Devices
• Manufacturer: Connect One Ltd.

5.2.2 Miscellaneous Signals
LMSEL
-RES
X1
X2
iChip LAN CO661AL-L Datasheet
Signal
Type
O
I
I
I
Pin No.
65
12
42
43
LAN Mode Select:
RESET: When -RES is LOW, iChip LAN immediately
terminates its present activity and clears its internal
logic.
-RES must be held LOW for at least 1 mSec after
power achieves 90% VCC.
facilitate power-on reset generation via an RC network.
Crystal Input: This pin and the X2 pin provide
connections for a fundamental mode or third-overtone,
parallel-resonant crystal used by the internal oscillator
circuit.
To provide iChip LAN with an external clock source,
connect the source to the X1 pin and leave the X2 pin
unconnected.
Crystal Output: This pin and the X1 pin provide
connections for a fundamental mode or third-overtone,
parallel-resonant crystal used by the internal oscillator
circuit.
This input is provided with a Schmidt trigger to
• When this pin is held LOW during power up for at
• During a firmware update procedure, when an
• When this pin is held LOW during power up for
least 5 seconds, iChip LAN will automatically enter
firmware update mode.
external modem dials to the iChip LAN, pulling this
pin down to LOW will cause the iChip LAN to
immediately answer the call and begin the update
session.
less than 5 seconds, it forces iChip LAN into auto
baud rate detection.
Description
Pin Descriptions
5-4