ADF4106
Data Sheet
Table 8. N (A, B) Counter Latch Map
CONTROL
BITS
RESERVED
6-BIT A COUNTER
13-BIT B COUNTER
DB21
G1
DB19
B12
DB16 DB15 DB14
DB10 DB9
B3 B2
DB6
A5
DB5
A4
DB4
A3
DB3
A2
DB0
C2 (0) C1 (1)
DB23 DB22
DB20
B13
DB18 DB17
B11 B10
DB13 DB12 DB11
B6 B5 B4
DB8
B1
DB7
A6
DB2
A1
DB1
X
X
B9
B8
B7
X = DON’T CARE
A COUNTER
A6
A5
..........
A2
A1
DIVIDE RATIO
0
0
0
0
.
0
0
0
0
.
..........
..........
..........
..........
..........
..........
0
0
1
1
.
0
1
0
1
.
0
1
2
3
.
.
.
.
.
.
.
1
.
1
..........
..........
.
0
.
0
.
60
1
1
1
1
1
1
..........
..........
..........
0
1
1
1
0
1
61
62
63
B13
B12
B11
B3
B2
B1
B COUNTER DIVIDE RATIO
0
0
0
0
.
.
0
0
0
0
.
.
0
0
0
0
.
.
..........
..........
..........
..........
..........
..........
0
0
0
0
.
.
0
0
1
1
.
.
0
1
0
1
.
.
NOT ALLOWED
NOT ALLOWED
NOT ALLOWED
3
.
.
.
.
.
.
..........
..........
..........
..........
..........
.
.
.
8188
8189
8190
8191
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
1
0
1
0
1
F4 (FUNCTION LATCH)
FASTLOCK ENABLE
CP GAIN OPERATION
0
0
1
1
0
1
0
1
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.
N = BP + A, P IS PRESCALER VALUE SET IN THE FUNCTION
LATCH. B MUST BE GREATER THAN OR EQUAL TO A. FOR
CONTINUOUSLY ADJACENT VALUES OF (N × F
), AT THE
REF
2
OUTPUT, N
IS (P – P).
MIN
THESE BITS ARE NOT USED
BY THE DEVICE AND ARE
DON'T CARE BITS.
Rev. E | Page 14 of 24
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