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