Datasheet

Data Sheet ADF4351
Rev. 0 | Page 15 of 28
N16 N15 ... N5 N4 N3 N2 N1 INTEGER VALUE (INT)
0 0 ... 0 0 0
0 0 NOT ALLOWED
0 0 ... 0 0 0 0 1 NOT ALLOWED
0 0 ... 0 0 0 1 0 NOT ALLOWED
. .
... . . . . . ...
0 0 ... 1 0 1 1 0 NOT ALLOWED
0 0 ... 1 0 1 1 1 23
0 0 ... 1 1 0 0 0 24
. . ... . . . . . ...
1 1 ... 1 1 1 0 1 65,533
1 1 ... 1 1 1 1 0 65,534
1 1 ... 1 1 1 1 1 65,535
F12 F11 ... F2 F1 FRACTIONAL VALUE (FRAC)
0 0 ... 0 0 0
0 0 ... 0 1 1
0 0 ... 1 0 2
0 0 ... 1 1 3
. . ... . . .
. . ... . . .
. . ... . . .
1 1 ... 0 0 4092
1 1 ... 0 1 4093
1 1 ... 1 0 4094
1 1 ... 1 1 4095
DB31
DB30 DB29 DB28 DB27 DB26 DB25 DB24 DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
N16 N15 N14 N13 N12 N11 N10 N9
RESERVED
16-BIT INTEGER VALUE (INT) 12-BIT FRACTIONAL VALUE (FRAC)
CONTROL
BITS
N8 N7 N6 N5 N4 N3 N2 N1 F12 F11 F10 F9 F8 F7 F6 F5 F4 F3 F2 F1 C3(0) C2(0) C1(0)
INTmin = 75 WITH PRESCALER = 8/9
09800-012
Figure 24. Register 0 (R0)
P12 P11 ... P2 P1 PHASE VALUE (PHASE)
0 0 ... 0 0 0
0 0 ... 0 1 1 (RECOMMENDED)
0 0 ... 1 0 2
0 0 ... 1 1 3
. . ... . . .
. . ... . . .
. .
... . . .
1 1 ... 0 0 4092
1 1 ... 0 1 4093
1 1 ... 1 0 4094
1 1 ... 1 1 4095
DB31 DB30 DB29 DB28 DB27 DB26 DB25 DB24 DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 PH1 PR1 P12 P11 P10 P9
12-BIT PHASE VALUE (PHASE) 12-BIT MODULUS VALUE (MOD)
CONTROL
BITS
P8 P7 P6 P5 P4 P3 P2 P1 M12 M11 M10 M9 M8 M7 M6 M5 M4 M3 M2 M1 C3(0) C2(0) C1(1)
RESERVED
M12 M11 ...
...
...
...
...
...
...
...
...
...
M2 M1 INTERPOLATOR MODULUS (MOD)
0 0 1 0 2
0 0 1 1 3
. . . . .
. . . . .
. . . . .
1 1 0 0 4092
1 1 0 1 4093
1 1 1 0 4094
1 1 1 1 4095
PRESCALER PHASE ADJUST
PR1 PRESCALER
0 4/5
1 8/9
PH1 PHASE ADJ
0 OFF
1 ON
DBR DBR
09800-013
Figure 25. Register 1 (R1)