ICS84021 Datasheet, PDF (5/14 Pages) Integrated Circuit Systems – 260MHZ, CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS84021
260MHZ, CRYSTAL-TO-LVCMOS / LVTTL
FREQUENCY SYNTHESIZER
TABLE 3C. PROGRAMMABLE OUTPUT DIVIDER FUNCTION TABLE (PLL ENABLED)
Inputs
N1
N0
0
0
0
1
1
0
1
1
N Divider Value
3
4
5
6
Output Frequency (MHz)
Minimum Maximum
206.7
260
155
195
124
156
103.3
130
TABLE 3D. COMMONLY USED CONFIGURATION FUNCTION TABLE
Crystal (MHz)
19.44
19.53125
25
25
25.50
25.50
25.50
38.88
Input
M Divider Value
32
32
25
25
25
25
25
16
N Divider Value
4
4
4
5
3
4
6
4
Output Frequency (MHz)
155.52
156.25
156.25
125
212.50
159.375
106.25
155.52
TABLE 3E. OUTPUT ENABLE & CLOCK ENABLE FUNCTION TABLE
Control Inputs
OE0 OE1
0
0
0
1
1
0
1
1
Output
Q0
Q1
Hi-Z
Hi-Z
Hi-Z
Enabled
Enabled
Hi-Z
Enabled Enabled
84021AY
www.icst.com/products/hiperclocks.html
5
REV. A NOVEMBER 7, 2003