Datasheet

ADF4002 Data Sheet
Rev. C | Page 12 of 20
N COUNTER LATCH MAP
DB20
DB19
DB18 DB17
DB16 DB15 DB14
DB13 DB12 DB11
DB10 DB9
DB8
DB7
DB6 DB5
DB4 DB3
DB2 DB1
DB0
C2 (0) C1 (1)B1
B2B3B4B5B6B7B8B9B10B11B12B13 X XXXXX
DB21
DB22DB23
G1
0 0
0
1
1
0
F4 (FUNCTION LATCH)
FASTLOCK ENABLE
1 1
X X
N13 N12 N11 N3 N2 N1
0 0 0 .......... 0 0 0
0 0 0 .......... 0 0 1
0 0 0 .......... 0 1 0
0 0 0 .......... 0 1 1
3
. . . .......... . . .
.
. . . .......... . . .
.
. . . .......... . . .
.
1 1 1 .......... 1 0 0
8188
1 1 1 .......... 1 0 1
8189
1 1 1 .......... 1 1 0
8190
1 1 1 .......... 1 1 1
8191
X = DON’T CARE
RESERVED
13-BIT N COUNTER
RESERVED
CONTROL
BITS
CP GAIN
N COUNTER DIVIDE RATIO
NOT ALLOWED
1
2
THESE BITS ARE NOT USED
BY THE DEVICE AND ARE
DON'T CARE BITS.
OPERATIONCP GAIN
CHARGE PUMP CURRENT
SETTING 1 IS PERMANENTLY USED.
CHARGE PUMP CURRENT
SETTING 2 IS PERMANENTLY USED.
CHARGE PUMP CURRENT
SETTING 1 IS USED.
CHARGE PUMP CURRENT IS
SWITCHED TO SETTING 2. THE
TIME SPENT IN SETTING 2 IS
DEPENDENT ON WHICH FASTLOCK
MODE IS USED. SEE FUNCTION
LATCH DESCRIPTION.
THESE BITS ARE NOT USED
BY THE DEVICE AND ARE
DON'T CARE BITS.
06052-016
Figure 17. N Counter Latch Map