S1M8837 Samsung Semiconductor, Inc., S1M8837 Datasheet - Page 16

• Manufacturer Part Number: S1M8837
• Description: Fractional-n Rf/integer-n If Dual Pll
• Manufacturer: Samsung Semiconductor, Inc.

S1M8836/37
Programmable Reference Counter(W1[18:2])
If the Control Bit is 00, data is moved from the 22-bit shift register into the R-latch which sets the IF reference
counter. Serial data format is shown in the table below.
Division ratio : 3 to 32767(The divide ratios less than 3 are prohibited)
Data are shifted in MSB first.
Division ratio : 1 to 3
16
Division
MSB
21
32767
Ratio
15-Bit IF R Counter Division Ratio
RF R Counter Division Ratio
3
4
IF_CTL_WORD[21:19]
Program Code
Division Ratio
14
0
0
1
1
1
2
3
13
0
0
1
12
19 18
0
0
1
RF_R_CNTR[[18:17]: 1~3
11
0
0
1
Division Ratio of the RF R
Counter,RF_R_CNTR
10
0
0
1
9
0
0
1
W1[21:0]
8
0
0
1
1
0
0
1
1
17 16
7
0
0
1
IF_R_CNTR[16:2]: 3~32767
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
6
0
0
1
IF R Counter, IF_R_CNTR
Division Ratio of the
5
0
0
1
4
0
0
1
Control Bits
3
0
0
1
0
0
1
0
1
2
0
1
1
2 1
0
1
1
0
1
LSB
0
0
0
1
0
1