
ICS843001-21
FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
IDT / ICS LVPECL FREQUENCY SYNTHESIZER
3
ICS843001AG-21 REV. AMARCH 15, 2007
Function Tables
Table 3A. Common Configuration Table
Table 3B. Programmable M Output Divider Function Table
Input
M Divider
Value
N Divider
Value
VCO (MHz)
Output Frequency
(MHz)
Application
Reference Clock (MHz)
27
22
8
594
74.25
HDTV
24.75
24
8
594
74.25
HDTV
14.8351649
40
8
593.4066
74.1758245
HDTV
19.44
32
4
622.08
155.52
SONET
19.44
32
8
622.08
77.76
SONET
19.44
32
1
622.08
SONET
19.44
32
2
622.08
311.04
SONET
19.53125
32
4
625
156.25
10 GigE
25
5
625
125
1 GigE
25
10
625
62.5
1 GigE
25
24
6
600
100
PCI Express
25
24
4
600
150
SATA
25
24
8
600
75
SATA
26.5625
24
6
637.5
106.25
Fibre Channel 1
26.5625
24
3
637.5
212.5
4 Gig Fibre Channel
26.5625
24
4
637.5
159.375
10 Gig Fibre Channel
31.25
18
5
562.5
187.5
12 GigE
Inputs
M Divider
Value
Input Frequency (MHz)
M2
M1
M0
Minimum
Maximum
0
18
31.1
38.9
0
1
22
25.5
31.8
0
1
0
24
23.3
29.2
0
1
25
22.4
28.0
1
0
32
17.5
21.9
1
0
1
40
14.0
17.5