參數(shù)資料
型號: S1M8831A
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
中文描述: 分數(shù)N射頻/整數(shù)N如果雙鎖相環(huán)
文件頁數(shù): 15/32頁
文件大小: 248K
代理商: S1M8831A
FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
S1M8831A/33
15
PROGRAMMING DESCRIPTION
The S1M8831A/33 can be programmed via the serial bus interface. The interface is made of 3 functional signals:
clock, data, and latch enable(LE). Serial data is moved into the 24-bit shift register on the rising edge of the
clock. These data enters MSB first. When LE goes HIGH, data in the shift register is moved into one of the 4
latches (by the 2-bit control).
DATA[23:2]
CTL[1:0]
LSB
MSB
Data Flow (MSB First)
Control Bit Map (CTL[1:0])
Control Bits
Data Location
CTL2(CTL[1])
0
0
1
1
CTL1(CTL[0]
0
1
0
1
RF/IF R counter
IF N counter
RF N counter
RF Frac counter
Data Bit Map (DATA[23:2])
First Bit
Register Bit Location
Last Bit
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RIF_R
TEST
IF_R_CNTR(15 bits)
0
0
IF_N
TEST
OSC
IF_CTL_
WORD
IF_CP_
WORD
IF_NB_CNTR(3 bits)
IF_NA_CNT
R(3 bits)
0
1
RF_N
RF_CTL_WORD
CMOS
RF_CP_WORD
RF_NB_CNTR(7 bits)
FoLD(4 bits)
1
0
RF_Frac
RF_NA_CNTR(4 bits)
TEST
FRAC_CNTR(17 bits)
1
1
NOTE:
Test bits are reserved and should be set to be zero(Low) for normal usage.
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