ICS84330-02 Datasheet, PDF (4/17 Pages) Integrated Circuit Systems – 700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS84330-02
700MHZ, LOW JITTER, CRYSTAL-TO-3.3V
DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
TABLE 3A. PARALLEL AND SERIAL MODE FUNCTION TABLE
Inputs
nP_LOAD M
N S_LOAD S_CLOCK S_DATA
L
Data Data
X
X
X
↑
Data Data
L
X
X
H
X
X
L
↑
Data
H
X
X
↑
H
X
X
↓
H
X
X
L
H
X
X
H
NOTE: L = LOW
H = HIGH
X = Don't care
↑ = Rising edge transition
↓ = Falling edge transition
L
Data
L
Data
X
X
↑
Data
Conditions
Data on M and N inputs passed directly to M divider and
N output divider. TEST mode 000.
Data is latched into input registers and remains loaded
until next LOW transition or until a serial event occurs.
Serial input mode. Shift register is loaded with data on
S_DATA on each rising edge of S_CLOCK.
Contents of the shift register are passed to the M divider
and N output divider.
M divide and N output divide values are latched.
Parallel or serial input do not affect shift registers.
S_DATA passed directly to M divider as it is clocked.
TABLE 3B. PROGRAMMABLE VCO FREQUENCY FUNCTION TABLE
VCO Frequency
(MHz)
M Divide
256
M8
128
M7
64
M6
32
M5
16
M4
8
M3
4
M2
2
M1
1
M0
250
125
0
0
1
1
1
1
1
0
1
252
126
0
0
1
1
1
1
1
1
0
254
127
0
0
1
1
1
1
1
1
1
256
128
0
1
0
0
0
0
0
0
0
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
696
348
1
0
1
0
1
1
1
0
0
698
349
1
0
1
0
1
1
1
0
1
700
350
1
0
1
0
1
1
1
1
0
NOTE 1: These M divide values and the resulting frequencies correspond to a crystal frequency of 16MHz.
TABLE 3C. PROGRAMMABLE OUTPUT DIVIDER FUNCTION TABLE
Inputs
N1
N0
0
0
0
1
1
0
1
1
N Divider Value
2
4
8
1
Output Frequency (MHz)
Minimum Maximum
125
350
62.5
175
31.25
87.5
250
700
84330AV-02
www.icst.com/products/hiperclocks.html
4
REV. A MAY 31, 2005