ICS843001I-23 Datasheet, PDF (3/24 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL/LVCMOS FREQUENCY SYNTHESIZER

ICS843001I-23 Data Sheet
FEMTOCLOCK^® CRYSTAL/LVCMOS-TO-LVPECL/LVCMOS FREQUENCY SYNTHESIZER
Function Tables
Table 3A. Common Configuration Table
Input Frequency
(MHz)
M Feedback Divider
Value
VCO
Frequency
(MHz)
27
44
1188
24.75
48
1188
19.44
64
1244.16
19.44
64
1244.16
19.44
64
1244.16
25
50
1250
25
50
1250
25
50
1250
25
50
1250
25
50
1250
25
45
1125
25
48
1200
25
48
1200
25
48
1200
25
51
1275
25
51
1275
25
51
1275
N Output Divider
Value
16
16
8
2
4
10
8
5
4
2
6
12
8
16
12
8
6
Output Frequency (MHz)
74.25
74.25
155.52
622.08
311.04
125
156.25
250
312.5
625
187.5
100
150
75
106.25
159.375
212.5
Application
HDTV
HDTV
SONET
SONET
SONET
GigE
10 GigE
GigE
XGMII
10 GigE
12 GigE
PCI Express
SATA
SATA
Fibre Channel
10 Gig Fibre Channel
4 Gig Fibre Channel
Table 3B. Programmable M Feedback Divider Function Table
Inputs
M Feedback Divider
Input Frequency (MHz)
M2
M1
M0
Value
Minimum
Maximum
0
0
0
44
25.5
27
0
0
1
45
24.9
27
0
1
0
48
23.3
26.56
0
1
1
50
22.4
25.5
1
0
0
51
22.0
25
1
0
1
64 (default)
19.44
19.92
ICS843001CGI-23 REVISION A OCTOBER 4, 2011
3
©2011 Integrated Device Technology, Inc.