ICS308 Datasheet, PDF (2/9 Pages) Integrated Circuit Systems – SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER

ICS308
SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER
SER PROG CLOCK SYNTHESIZER
Pin Assignment
DATA
1
X2
2
X 1 /IC L K
3
CLK9
4
VDD
5
GND
6
CLK1
7
CLK2
8
CLK3
9
CLK4
10
20
STROBE
19
SCLK
18
PDTS
17
VDD
16
VDD
15
GND
14
CLK5
13
CLK6
12
CLK7
11
CLK8
20 pin (150 m il) SSOP (QSOP)
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin
Name
DATA
X2
X1/ICLK
CLK9
VDD
GND
CLK1
CLK2
CLK3
CLK4
CLK8
CLK7
CLK6
CLK5
GND
VDD
VDD
PDTS
SCLK
STROBE
Pin
Type
Input
XO
XI
Output
Power
Power
Output
Output
Output
Output
Output
Output
Output
Output
Power
Power
Power
Input
Input
Input
Pin Description
Serial data input.
Crystal Output. Connect this pin to a crystal. Float for clock input.
Connect this pin to a crystal or external clock input.
Output clock 9. Default of Reference frequency output when unprogrammed.
Connect to +3.3 V.
Connect to Ground.
Output clock 1. Default of Reference frequency output when unprogrammed.
Output clock 2. Default of Reference frequency output when unprogrammed.
Output clock 3. Default of Reference frequency output when unprogrammed.
Output clock 4. Default of Reference frequency output when unprogrammed.
Output clock 8. Default of Reference frequency output when unprogrammed.
Output clock 7. Default of Reference frequency output when unprogrammed.
Output clock 6. Default of Reference frequency output when unprogrammed.
Output clock 5. Default of Reference frequency output when unprogrammed.
Connect to Ground.
Connect to +3.3 V.
Connect to +3.3 V.
Powers down entire chip, tri-states all outputs when low. Internal pull-up.
Serial Shift register clock. See timing diagram.
Strobe to load data. See timing diagram. Use external 250 kOhm pull-up.
IDT™ / ICS™ SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER 2
ICS308
REV J 120507