S1M8831A Samsung Semiconductor, Inc., S1M8831A Datasheet - Page 19

• Manufacturer Part Number: S1M8831A
• Description: Fractional-n Rf/integer-n If Dual Pll Frequency Synthesizer
• Manufacturer: Samsung Semiconductor, Inc.

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
RF N Counter
Division Ratio: 3 to 127 (The division ratios less than 3 are prohibited)
Division Ratio: 0 to 7 (B > A)
x = Don' t care condition
Division Ratio(A)
RF Main Counter Division Ratio (B Counter)
RF_NB_ CNTR[12:6] ; for S1M8831A/33
RF Swallow Counter Division Ratio (A Counter)
RF_NA_CNTR[23:20] ; for S1M8831A
Division Ratio(B)
MSB
23
RF_CTL_WORD
RF_NA_CNTR
[23:21]
[23:20]
127
0
1
7
3
4
21
Program Code
20
CMOS[20:18]
TEST
N
3
x
x
x
N
6
0
0
1
18 17
N
2
0
0
1
RF_CP_WORD
N
5
0
0
1
[17:13]
N
1
0
0
1
N
4
0
0
1
13 12
N
0
0
1
1
N
3
0
0
1
RF_NB_CNTR[12:16] ; 3 - 127
RF_N[23:0]
RF_Frac[23:0]
Division Ratio of the
RF N Counter
FRAC_CNTR[18:2]
N
2
0
1
1
Division Ratio: 0 to 15 (B > A)
Division Ration(A)
N
1
1
0
1
RF_NA_CNTR[23:20] ; for S1M8833
N
0
1
0
1
15
0
1
6 5
FoLD[5:2]
Control Bits
N
3
0
0
1
N
2
0
0
1
2 1
S1M8831A/33
1
1
N
1
0
0
1
LSB
0
1
0
N
0
0
1
1
19