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參數(shù)資料
| 型號： | S1T8825X01-R0B0 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | OSC 5V SMT 7X5 CMOS PROGRM |
| 中文描述： | 1.1GHz的雙鎖相環(huán) |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 120K |
| 代理商： | S1T8825X01-R0B0 |
S1T8825
1.1GHZ DUAL PLL
12
PRELINIMARY( VER.2.1 )
CHANNEL 1, CHANNEL 2 PROGRAMMABLE N COUNTER
These programmable dividers are composed of a 5-bit swallow counter (5-bit programmable divider),
12-bit programmable main counter, and two-modulus prescalers providing 64 and 66 divisions.
Sending certain data to the swallow counter and the 12-bit programmable main counter allows the setting of any of
2048 to 262142 divisions (multiple of two).
The 12-bit programmable divider and swallow counter are set by each channel;
each channel is identified by a group code.
5-BIT SWALLOW COUNTER DIVISION RATIO (A COUNTER)
12-BIT MAIN COUNTER DIVISION RATIO (B COUNTER)
B = N6
×
2
0
+ N7
×
2
1
+ N7
×
2
2
…
N17
×
2
11
Division ratio: 3 to 4095
Data is shifted in MSB first
Figure 5.
A = N1
×
2
0
+ N2
×
2
1
…
N5
×
2
4
Division ratio: 0 to 31, B
≥
A
Division Ratio
(A)
N5
N4
N3
N2
N1
0
0
0
0
0
0
1
0
0
0
0
1
31
1
1
1
1
1
Division
Ratio (B)
N17
N16
N15
N14
N13
N12
N11
N10
N9
N8
N7
N6
3
0
0
0
0
0
0
0
0
0
0
1
1
4
0
0
0
0
0
0
0
0
0
0
0
0
4095
1
1
1
1
1
1
1
1
1
1
1
1
N1
N2
N3
N4
N5
N6
N7
N8
N9
N10
N11
N12
N13
N14
N15
N16
N17
N18
N19
MSB
Swallow counter
Division Ratio of the N Counter, N
main counter
Group Code
CH1 = "10"
CH2 = "01"
LSB
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