ICS1493-19
CLOCK GENERATOR FOR AUTOMOTIVE APPLICATION
Pin Assignment
Spread Enable Table 1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
X1
1
X2
GNDX
2
VDDX
FSEL
SSEN
66.60/33.30 MHz Clock
No spread (default)
-0.5%
3
CLK19
0
1
GND14&19
4
OE
VDD14&19
CLK14
VDD48
GND48
CLK48
VDD22
GND22
CLK22
VDD66
CLK66
5
SSEN
VDDPLL
GNDPLL
CLK66
VDD66
CLK33
Output Enable Function Table 2
6
7
OE
0
Output Status
Stopped low
8
9
1
Running (default)
10
11
12
13
14
Frequency Select Table 3
VDD33
GND33
GND66
CLK66
FSEL
Clock Selected (MHz)
0
1
12.288
33.30 (default)
28-pin (173 mil) TSSOP
Pin Descriptions
Pin
Number
Pin
Name
Pin
Type
Pin Description
1
2
X1
Input
Crystal connection. Connect to a 19.35 MHz fundamental crystal.
GNDX
CLK19
Power Crystal oscillator circuit ground.
3
Output 19.35 MHz reference clock output. Internal weak pull-down resistor.
4
GND14&19 Power Connect to 14.7456 MHz and 19.35 MHz clock output ground.
VDD14&19 Power Output driver power for 14.7456 MHz clock output.
5
6
CLK14
VDD48
GND48
CLK48
VDD22
GND22
CLK22
VDD66
CLK66
CLK66
Output 14.7456 MHz clock output. Internal weak pull-down resistor.
Power Output driver power for 48 MHz clock output.
7
8
Power Connect to 48 MHz clock output ground.
9
Output 48 MHz clock output. Internal weak pull-down resistor.
Power Output driver power for 22.5792 MHz clock output.
Power Connect to 22.5792 MHz clock output circuit ground.
Output 22.5792 MHz clock output. Internal weak pull-down resistor.
Power Output driver power for 66.60 MHz clock output.
Output 66.60 MHz clock output. Internal weak pull-down resistor.
Output 66.60 MHz clock output. Internal weak pull-down resistor.
10
11
12
13
14
15
MDS 1493-19 J
2
Revision 051310
Integrated Device Technology, Inc.● www.idt.com
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
