ics426 Integrated Device Technology, ics426 Datasheet - Page 2

• Manufacturer Part Number: ics426
• Description: Serial Ata/fiber Channel Clock Synthesizer
• Manufacturer: Integrated Device Technology

IDT™ / ICS™ SERIAL ATA/FIBER CHANNEL CLOCK SYNTHESIZER
ICS426
SERIAL ATA/FIBER CHANNEL CLOCK SYNTHESIZER
Pin Assignment
Pin Descriptions
X1/ICLK
GND
GND
VDD
VDD
VDD
CLK
S1
16 pin 173 mil (0.65 mm) TSSOP
Number
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
X1/ICLK
Name
GND
GND
GND
GND
GND
GND
VDD
VDD
VDD
VDD
CLK
Pin
OE
S1
S0
X2
16
15
14
13
12
11
10
9
Output
Power
Power
Power
Power
Power
Power
Power
Power
Power
Type
Power
Input
Input
Input
Pin
XO
XI
X2
GND
GND
OE
GND
S0
VDD
GND
Crystal connection. Connect to a 25 MHz fundamental mode
Crystal connection. Connect to a 25 MHz fundamental mode
crystal or clock input.
Connect to +3.3 V.
Connect to +3.3 V.
Connect to ground.
Connect to ground.
Select pin 1 determines CLK output based on table above. Internal
pull-up.
Connect to +3.3 V.
Clock output. Tri-state output when OE is low.
Connect to ground.
Connect to +3.3V.
Select pin 0 determines CLK output based on table above. Internal
pull-up.
Connect to ground.
Output Enable. All outputs are tri-stated when low. Internal pull-up.
Connect to ground.
Connect to ground.
crystal or float for clock input.
2
Clock Output Select Table (MHz)
S1
0
0
1
1
Pin Description
S0
0
1
0
1
Input
25
25
25
25
ICS426
CLOCK SYNTHESIZER
CLK Output
106.25
156.25
150
75
REV B 091102