ICS9248-80 Datasheet, PDF (2/7 Pages) Integrated Circuit Systems – General Purpose 133MHz System Clock

ICS9248 - 80
Pin Descriptions
Pin number
Pin name
1
REF
2
GNDREF
3
X1
4
X2
5
VDD
6, 7, 14, 27 FS (0:3)
8, 11
9, 18, 24
10
GND
VDDO
CLK_STOP#
12
SDATA
13
SCLK
15, 21
GNDO
16, 17, 19, 20,
22, 23, 25, 26 ^{CLK (0:7)}
28
VDDREF
Type
OUT
PWR
IN
OUT
PWR
IN
PWR
PWR
IN
IN
IN
PWR
OUT
PWR
Description
14.318MHz reference clock outputs at 3.3V
Gnd pin for REF clocks
XTAL_IN 14.318MHz crystal input
XTAL_OUT Crystal output
3.3V power input
Logic - input for frequency selection
Ground
3.3V power for CLK outputs
Stops all clock outputs
Data input for I²C serial input.
Clock input of I²C input
Ground for CLK outputs
Clock outputs up to 133.34MHz
Power pin for REF clocks
Frequency Selection
FS3
FS2
FS1
FS0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
CLK
(MHz)
133.34
125.01
120.00
114.99
109.99
105.00
100.00
95.00
90.00
85.01
75.00
70.00
66.67
60.00
54.99
33.33
2