ICS502 Integrated Circuit System, ICS502 Datasheet - Page 2

• Manufacturer Part Number: ICS502
• Description: Loco (tm) PLL Clock Multiplier
• Manufacturer: Integrated Circuit System

MDS 502 E
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA •9 5126 • [phone]te l • www.icst.com
Pin Assignment
Key: I = Input, TI = Tri-Level Input, O = output, P = power supply connection
Pin Descriptions
Common Output Frequencies Examples (MHz)
Note that all of the above outputs are achieved by using an inexpensive 10MHz to 27MHz crystal.
Consult MicroClock/ICS on how to achieve other output frequencies.
Number
Output
Input
Selection (S1, S0)
Output
Input
Selection (S1, S0)
X1/ICLK
1
2
3
4
5
6
7
8
VDD
GND
REF
X1/ICLK
Name
3
4
VDD
GND
1
2
REF
CLK
S0
S1
X2
0, 0
1, 0
2 0
6 4
10
16
6 6 . 6 6
Type Description
M, 1
1, 1
2 5
10
20
P
P
O
O
TI
O
I
I
8
7
6
5
Crystal connection or clock input.
Connect to +3.3V or +5V.
Connect to ground.
Buffered crystal oscillator output clock.
Clock output per Table above.
Select 0 for output clock. Connect to GND or VDD.
Select 1 for output clock. Connect to GND or VDD or float.
Crystal connection. Leave unconnected for clock input.
CLK
S1
X2
S0
M, 0
M, 0
3 0
7 2
10
24
0, 0
0, 1
3 2
7 5
16
15
Clock Decoding Table (MHz)
0 = connect directly to ground.
1 = connect directly to VDD.
M = leave unconnected (floating).
3 3 . 3 3
S1
M, 1
2
1, 0
M
M
0
0
1
1
8 0
10
20
LOCO™ PLL Clock Multiplier
S0
0
1
0
1
0
1
3 7 . 5
M, 0
1, 1
8 1
15
27
x3.33
CLK
x2.5
x2
x5
x3
x4
M, 1
0, 0
4 0
9 0
20
27
Minimum input frequency for all
selections is per table on page 3.
1 0 0
M, 0
0, 1
4 8
16
20
1 0 8
1, 1
1, 0
5 0
20
27
Revision 021402
13.5
1 2 0
1, 0
0, 1
5 4
24
ICS502
1 3 5
M, 0
0, 1
6 0
20
27