
ICS650-11B
BroadCom Networking Clock Synthesizer
MDS 650-11B
C
Integrated Circuit Systems, Inc. 525 Race Street San Jose CA 95126(408)295-9800tel www.icst.com
2
Revision
012005
Printed 11/1
4/04
PRELIMINARY INFORMATION
Pin Descriptions
Key: XI, XO = crystal connections; O = Output; P = power supply connection
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
GND
X2
X1
VDD
GND
GND
DC
DC
DC
100M
GND
66.66M
25M
GND
VDD
VDD
33.33M
133.33M
DC
DC
Type
P
XO
XI
P
P
P
-
-
-
O
P
O
O
P
P
P
O
O
-
-
Description
Connect to ground.
Crystal connection. Connect to 25 MHz crystal or leave unconnected for a clock input.
Crystal connection. Connect to 25 MHz fundamental crystal or clock input.
Connect to +3.3 V or +5 V. Must be same as other VDDs.
Connect to ground.
Connect to ground.
Don't Connect. Do not connect anything to this pin.
Don't Connect. Do not connect anything to this pin.
Don't Connect. Do not connect anything to this pin.
100.0 MHz clock output.
Connect to ground.
66.66 MHz clock output.
25.0 MHz clock output.
Connect to ground.
Connect to +3.3V or +5V. Must be same as other VDDs.
Connect to +3.3 V or +5 V. Must be same as other VDDs.
33.33 MHz clock output.
133.33 MHz clock output.
Don't Connect. Do not connect anything to this pin.
Don't Connect. Do not connect an thing to this pin.
Pin Assignment
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
VDD
GND
D C
X2
X1
VDD
VDD
20 pin (150 mil) SSOP
10
100M
D C
133.33M
33.33M
GND
D C
66.66M
GND
D C
D C
18
17
19
20
GND
25M
GND