ICS149317 ICST [Integrated Circuit Systems], ICS149317 Datasheet - Page 2

• Manufacturer Part Number: ICS149317
• Description: Clock Synthesizer for Portable Systems
• Manufacturer: ICST [Integrated Circuit Systems]

MDS 1493-17 A
Integrated Circuit Systems
Pin Assignment
Pin Descriptions
VDDO
GND
VDD
48M
OE
P R E L I M I N A R Y I N F O R M A T I O N
Number
Pin
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
8
9
1
6
20-pin QFN
22/24M
SDATA
Name
VDDO
VDDO
GND
GND
GND
GND
GND
VDD
SCK
VDD
48M
22M
37M
27M
Pin
OE
●
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16
11
Output
Output
Output
Output
Output
Power
Power
Power
Power
Power
Power
Power
Power
Power
Type
Input
Input
Input
Pin
GND
VDD
37M
VDDO
22/24M
Connect to ground.
48 MHz clock output. High impedance state when OE=1.
Output voltage level. Connect to +1.8 or 2.5 V. Same voltage as pin
12.
Output Enable pin. See table above. Internal pull-down resistor.
Connect to +1.8 V.
22.5792 MHz clock output. Internal pull-down. High impedance state
when OE=1.
Connect to ground.
I
I
Connect to ground.
Selectable output clock of either 22.5792M or 24.576M. See table.
Internal pull-down. High impedance state. OE=1.
Output voltage level. Connect to +1.8 or 2.5 V. Same voltage as pin 3.
Spread spectrum 37 MHz clock output. See table. Internal pull-down.
High impedance state when OE=1.
Connect to +1.8 V.
Connect to ground.
Connect to ground.
27 MHz reference clock output. Internal pull-down. High impedance
state when OE=1.
2
2
C bus clock pin. Internal pull-up resistor.
C bus data pin. Internal pull-up resistor.
2
Output Enable Table
Note: OE pin has an internal pull-down resistor.
OE
0
1
Pin Description
●
Clock Synthesizer for Portable Systems
te l (4 08) 297 -1201
Clock Output State
Normal Operation
Hi-Z
●
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Revision 101005
ICS1493-17