ICS844003I Datasheet, PDF (3/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844003I
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
FREQUENCY SYNTHESIZER
TABLE 3A. BANK A FREQUENCY TABLE
Crystal Frequency
(MHz)
31.25
Inputs
DIV_SELA1
0
DIV_SELA0
0
FB_DIV
0
Feedback
Divider
20
Bank A
Output Divider
1
M/N
Multiplication
Factor
20
QA0/nQA0
Output
Frequency
(MHz)
625
31.25
31.25
31.25
0
1
0
20
2
1
0
0
20
4
1
1
0
20
5
10
312.5
5
156.25
4
125
26.041666
0
0
1
24
1
24
625
26.041666
0
1
1
24
2
12
312.5
26.041666
1
0
1
24
4
6
156.25
26.041666
1
1
1
24
5
64.8
125
TABLE 3B. BANK B FREQUENCY TABLE
Crystal Frequency
(MHz)
31.25
Inputs
DIV_SELB1
0
DIV_SELB0
0
FB_DIV
0
Feedback
Divider
20
Bank B
Output Divider
1
M/N
Multiplication
Factor
20
QB0/nQB0
Output
Frequency
(MHz)
625
31.25
0
1
0
20
2
10
312.5
31.25
1
0
0
20
4
5
156.25
31.25
1
1
0
20
5
26.041666
0
0
1
24
1
26.041666
0
1
1
24
2
26.041666
1
0
1
24
4
26.041666
1
1
1
24
5
4
125
24
625
12
312.5
6
156.25
4.8
125
844003AGI
www.icst.com/products/hiperclocks.html
3
REV. B AUGUST 25, 2005