UMA1017M Datasheet, PDF (6/16 Pages) NXP Semiconductors – Low-voltage frequency synthesizer for radio telephones

Table 1 Format of programmed data
LAST IN
p21
ADD0
p20
p19
ADD1
ADD2
LATCH ADDRESS
PROGRAMMING REGISTER BIT USAGE
p18
p17
p16
../..
p2
ADD3
DATA0
DATA1
../..
DATA15
LSB
DATA COEFFICIENT
FIRST IN
p1
DATA16
MSB
Table 2 Bit allocation (note 1)
FT
p1
p2 p3 p4 p5 p6
dt16 dt15 dt14 dt13 dt12
X
XXX
PM16
X
XXX
OOL X
XX
REGISTER BIT ALLOCATION
p7 p8 p9 p10 p11 p12 p13 p14 p15
DATA FIELD
TEST BITS⁽²⁾
dt4 dt3 dt2
CR1 CR0 X X sPON X
XX X
MAIN DIVIDER COEFFICIENT
PR10
REFERENCE DIVIDER COEFFICIENT
LT
p16 p17 p18 p19 p20 p21
dt1 dt0
ADDRESS
00 0 0
XX
00 0 1
PM0 0 1 0 0
PR0 0 1 0 1
Notes
1. FT = first; LT = last; sPON = software power-up for synthesizer (1 = ON); OOL = out-of-lock (1 = enabled).
2. The test register should not be programmed with any other values except all zeros for normal operation.
Table 3 Fast and normal charge pumps current ratio (note 1)
CR1
0
0
1
1
CR0
0
1
0
1
I_CP
4 × I_SET
4 × I_SET
2 × I_SET
2 × I_SET
Note
1. I_SET = _R--V---e-¹--_x4--_t ; bias current for charge pumps.
I_CPF
16 × I_SET
32 × I_SET
24 × I_SET
32 × I_SET
I_CPF : I_CP
4:1
8:1
12 : 1
16 : 1