參數(shù)資料
型號: LMX2364TMX/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 2600 MHz, PDSO24
封裝: TSSOP-24
文件頁數(shù): 17/39頁
文件大?。?/td> 694K
代理商: LMX2364TMX/NOPB
Programming Description
2.0 INPUT DATA REGISTER
The 24-bit input data register is loaded through the MICROWIRE Interface. The input data register is used to program the control
registers. The data format of the 24-bit data register is shown below. The control bits (CTL[2:0]) decode the internal register
address and the data bits (DATA[21:0]) are used to program various control words for the synthesizer. On the rising edge of LE,
data stored in the input date register is loaded into one of the 8 appropriate latches (selected by control bits). Data is shifted in
MSB first
MSB
LSB
DATA [21:0]
CTL[2:0]
23
3 2
0
2.1 REGISTER LOCATION TRUTH TABLE
The control bits CTL[2:0] decode the internal register address. The table below shows how the control bits are mapped to the
target control register.
CTL[2:0]
Target Control Register
0R0
1R1
2R2
3R3
4R4
5R5
6R6
7
This address is invalid.
2.2 CONTROL REGISTER CONTENT MAP
The control register content map describes how the bits within each control register are allocated to specific control functions. The
bits that are marked “0” should be programmed as such to insure proper device operation. It is important to note that some control
words are dual mapped and take one a different control function depending on the operating mode of the device.
Reg
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9876543210
DATA[20:0]
C2
C1
C0
R0
000
IF_
RST
IF_
CP
IF_
CPP
IF_R[14:0]
0
R1
IF_
PD
0
IF_N[16:0]
0
1
R2
0000000
IF_TOC[13:0]
0
1
0
R3
RF_
RST
RF_
P
RF_
CPP
RF_
CP[1:0]
RF_R[8:0]
RF_FD[6:0]
0
1
R4
RF_
PD
RF_N[12:0]
RF_FN[6:0]
1
0
R5
0
RF_
CSR[1:0]
RF_
OM[1:0]
RF_
CPF[1:0]
RF_TOC[13:0]
1
0
1
R6
0000000
FE
0000000
PD_
M
OSC
MUX[3:0]
1
0
LMX2364
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