ADF4360-3
Data Sheet
Table 8. N Counter Latch
CONTROL
BITS
13-BIT B COUNTER
5-BIT A COUNTER
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
DIVSEL DIV2 CPG B13 B12 B11 B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
RSV A5
A4
A3
A2
A1 C2 (1) C1 (0)
THIS BIT IS NOT USED
BY THE DEVICE AND
IS A DON'T CARE BIT.
A COUNTER
A5
A4
..........
A2
A1
DIVIDE RATIO
0
0
0
0
.
.
.
1
1
1
1
0
0
0
0
.
.
.
1
1
1
1
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
0
0
1
1
.
.
.
0
0
1
1
0
1
0
1
.
.
.
0
1
0
1
0
1
2
3
.
.
.
28
29
30
31
B13
B12
B11
B3
B2
0
0
1
1
.
.
.
0
0
1
1
B1
0
1
0
1
.
.
.
0
1
0
1
B COUNTER DIVIDE RATIO
NOT ALLOWED
NOT ALLOWED
NOT ALLOWED
3
.
.
.
8188
8189
8190
8191
0
0
0
0
.
.
.
1
1
1
1
0
0
0
0
.
.
.
1
1
1
1
0
0
0
0
.
.
.
1
1
1
1
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
..........
0
0
0
1
.
.
.
1
1
1
1
F4 (FUNCTION LATCH)
FASTLOCK ENABLE
CP GAIN OPERATION
0
0
0
1
CHARGE PUMP CURRENT SETTING 1
IS PERMANENTLY USED
CHARGE PUMP CURRENT SETTING 2
IS PERMANENTLY USED
N = BP + A; P IS PRESCALER VALUE SET IN THE CONTROL LATCH.
B MUST BE GREATER THAN OR EQUAL TO A. FOR CONTINUOUSLY
2
ADJACENT VALUES OF (N
×
F
), AT THE OUTPUT, N
IS (P –P).
MIN
REF
DIVIDE-BY-2
DIV2
0
1
FUNDAMENTAL OUTPUT
DIVIDE-BY-2
DIVIDE-BY-2 SELECT (PRESCALER INPUT)
DIVSEL
0
1
FUNDAMENTAL OUTPUT SELECTED
DIVIDE-BY-2 SELECTED
Rev. C | Page 14 of 24
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