MK1449SITR Просмотр технического описания (PDF) - Integrated Circuit Systems
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MK1449SITR Datasheet PDF : 4 Pages
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MK1449B
Sound/SCSI+Fast Ethernet Clock
Pin Assignment
X1/ICLK 1
VDD 2
GND 3
CLK2 4
8 X2
7 S1
6 S0
5 CLK1
Clock Decoding Table (MHz)
S1 S0
00
01
10
11
CLK1
test
40
49.152
x1.25
CLK2
test
25
12.288
Reference
0 = connect directly to ground.
1 = connect directly to VDD.
In the 1,1 mode, crystals or clocks from
5 to 27 MHz can be used as an input.
Pin Descriptions
Number
1
2
3
4
5
6
7
8
Name
X1/ICLK
VDD
GND
CLK2
CLK1
S0
S1
X2
Type
I
P
P
O
O
I
I
O
Description
Crystal connection or clock input. Connect to a 14.31818MHz parallel resonant crystal.
Connect to +3.3V or +5V.
Connect to ground.
Clock 2 output per Table above.
Clock 1 output per Table above.
Select 0 for output clocks. Connect to GND or VDD. See table above.
Select 1 for output clocks. Connect to GND or VDD. See table above.
Crystal connection to a 14.31818 MHz crystal. Leave unconnected for clock input.
Key: I = Input, O = output, P = power supply connection
MDS 1449B C
2
Revision 120799
Printed 11/15/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126• (408)295-9800tel • www.icst.com
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