ICS650GI-36 Просмотр технического описания (PDF) - Integrated Circuit Systems
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ICS650GI-36 Datasheet PDF : 7 Pages
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ICS650-36
Networking & PCI Clock Source
Pin Assignment
X2 1
X1 2
GND 3
CLK3 4
PDTS 5
S2 6
CLK2 7
VDD 8
16 VDD
15 GND
14 REF
13 S0
12 VDD
11 CLK1
10 GND
9 S1
16-pin (173 mil) TSSOP
CLK Output Selection Table
S2 S1 S0 REF CLK1
0
0
0 OFF 33.30
0
0
1 ON 33.333
0
1
0 ON 33.333
0
1
1 ON 66.666
1
0
0 ON 33.333
1
0
1 ON 33.333
1
1
0 ON 33.333
1
1
1 ON 33.30
Note: All frequencies are in MHz.
CLK2
50
33.333
66.666
66.666
50
50
66.666
50
CLK3
125
125
125
125
125
100
100
125
Pin Descriptions
Pin
Number
1
Pin
Name
X2
2
X1
3
GND
4
CLK3
5
PDTS
6
S2
7
CLK2
8
VDD
9
S1
10
GND
11
CLK1
12
VDD
13
S0
Pin
Type
Pin Description
Output Crystal connection. Connect to 25 MHz crystal input or float for
clock.
Input Crystal connection. Connect to 25 MHz crystal or clock input.
Power Connect to ground.
Output Selectable clock output. See table above for frequency. Weak
internal pull-down when tri-state.
Input
Powers down entire chip and tri-states outputs when low. Internal
pull-up resistor.
Input Select pin. Selects clock output frequency from table above.
Internal pull-up resistor.
Output Selectable clock output. See table above for frequency. Weak
internal pull-down when tri-state.
Power Connect to +3.3 V.
Input Select pin. Selects clock output frequency from table above.
Internal pull-up resistor.
Power Connect to ground.
Output Selectable clock output. See table above for frequency. Weak
internal pull-down when tri-state.
Power Connect to +3.3 V.
Input Select pin. Selects clock output frequency from table above.
Internal pull-up resistor.
MDS 650-36 D
2
Revision 030206
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201● www.icst.com
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