ICS84329B Datasheet, PDF (4/19 Pages) Integrated Circuit Systems – 700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS84329B
700MHZ, LOW JITTER, CRYSTAL-TO-3.3V
DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
TABLE 3A. PARALLEL AND SERIAL MODE FUNCTION TABLE
nP_LOAD M
X
X
Inputs
N S_LOAD
X
X
L
Data Data
X
↑
Data Data
L
H
X
X
L
H
X
X
↑
H
X
X
↓
H
X
X
L
NOTE: L = LOW
H = HIGH
X = Don't care
↑ = Rising edge transition
↓ = Falling edge transition
S_CLOCK
X
X
X
↑
L
L
X
S_DATA
X
X
X
Data
Data
Data
X
Conditions
Reset. M and N bits are all set HIGH.
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.
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
250
0
1
1
1
1
1
0
1
0
251
251
0
1
1
1
1
1
0
1
1
252
252
0
1
1
1
1
1
1
0
0
253
253
0
1
1
1
1
1
1
0
1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
509
509
1
1
1
1
1
1
1
0
1
510
510
1
1
1
1
1
1
1
1
0
511
511
1
1
1
1
1
1
1
1
1
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
1
2
4
8
Output Frequency (MHz)
Minimum Maximum
250
700
125
350
62.5
175
31.25
87.5
84329BV
www.icst.com/products/hiperclocks.html
4
REV. B JANUARY 18, 2006