參數(shù)資料
型號(hào): S1M8821
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: INTERGER RF/IF DUAL PLL
中文描述: 整數(shù)射頻/中頻雙鎖相環(huán)
文件頁(yè)數(shù): 15/22頁(yè)
文件大小: 426K
代理商: S1M8821
INTERGER RF/IF DUAL PLL
S1M8821/22/23
15
Programmable Counter(N Counter)
If the Control Bits are 10(IF) or 11(RF), data is transferred from the 20-bit shift register into the N-latch. N Counter
consists of 7-bit swallow counter(A counter) and 11-bit main counter(B counter). Serial data format is shown below.
7-Bit Swallow Counter Division Ratio(A Counter)
11-Bit Main Counter Division Ratio(B Counter)
Division ratio : 3 to 2047
RF
IF
Division
Ratio(A)
0
N
7
0
N
6
0
N
5
0
N
4
0
N
3
0
N
2
0
N
1
0
Division
Ratio(A)
0
N
7
X
N
6
X
N
5
X
N
4
0
N
3
0
N
2
0
N
1
0
1
0
0
0
0
0
0
1
1
X
X
X
0
0
0
1
1
1
1
1
1
1
1
X
X
X
1
1
1
1
127
15
Division ratio : 0 to 127
B
>
A
Division ratio : 0 to 15
B > A
X = DON’T CARE condition
Division
Ratio
N
18
N
17
N
16
N
15
N
14
N
13
N
12
N
11
N
10
N
9
N
8
3
0
0
0
0
0
0
0
0
0
1
1
4
0
0
0
0
0
0
0
0
1
0
0
2047
1
1
1
1
1
1
1
1
1
1
1
C1
C2
N
1
N
2
N
3
N
4
N
5
N
6
N
7
N
8
N
9
N
10
N
11
N
12
N
13
N
14
N
15
N
16
N
17
N
18
N
19
N
20
LSB
MSB
Program Modes
Division Ratio of the N Counter, N
Control Bits
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