ICS661 데이터 시트보기 (PDF) - Integrated Device Technology
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ICS661 Datasheet PDF : 7 Pages
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ICS661
PRECISION AUDIO CLOCK SOURCE
CLOCK SYNTHESIZER
Pin Assignment
X1/REFIN
1
VDD
2
VDD
3
S0
4
GND
5
GND
6
S3
7
S2
8
16
X2
15
REF
14
VDDR
13
GND
12
SELIN
11
VDDO
10
S1
9
CLK
16-pin 4.40 mil body, 0.50 mm pitch TSSOP
Pin Descriptions
Output Clock Selection Table
Input
Output
S3 S2 S1 S0 Frequency Frequency
(MHz)
(MHz)
0
0
0
0
27
0
0
0
1
27
0
0
1
0
27
0
0
1
1
27
0
1
0
0
27
0
1
0
1
27
0
1
1
0
27
0
1
1
1
27
1
0
0
0
27
1
0
0
1
27
1
0
1
0
27
1
0
1
1
27
1
1
0
0
27
1
1
0
1
27
1
1
1
0
27
1
1
1
1
27
8.192
11.2896
12.288
24.576
12.288
16.9344
18.432
36.864
16.384
22.5792
24.576
49.152
24.576
33.8688
36.864
73.728
Pin
Pin
Number Name
1
X1/REFIN
2
VDD
3
VDD
4
S0
5
GND
6
GND
7
S3
8
S2
9
CLK
10
S1
11
VDDO
12
SELIN
13
GND
14
VDDR
15
REF
16
X2
Pin
Type
Input
Power
Power
Input
Power
Power
Input
Input
Output
Input
Power
Input
Power
Power
Output
Input
Pin Description
Connect this pin to a crystal or clock input
Power supply for crystal oscillator.
Power supply for PLL.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Connect to ground.
Ground for output stage.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Clock output.
Output frequency selection. Determines output frequency per table above. On chip pull-up.
Power supply for output stage.
Low for clock input, high for crystal. On chip pull-up.
Connect to ground.
Power supply for reference output. Ground to turn off REF.
Reference clock output.
Connect this pin to a crystal. Leave open if using a clock input.
IDT™ / ICS™ PRECISION AUDIO CLOCK SOURCE
2
ICS661
REV D 111804
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