LMX2430EVAL National Semiconductor, LMX2430EVAL Datasheet - Page 39
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LMX2430EVAL
Manufacturer Part Number
LMX2430EVAL
Description
EVALUATION BOARD FOR LMX2430
Manufacturer
National Semiconductor
Series
PLLatinum™r
Datasheets
1.LMX2433SLEXNOPB.pdf
(49 pages)
2.LMX2430EVAL.pdf
(26 pages)
3.LMX2430EVAL.pdf
(8 pages)
Specifications of LMX2430EVAL
Main Purpose
Timing, Frequency Synthesizer
Utilized Ic / Part
LMX2430
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Lead Free Status / Rohs Status
Not Compliant
Other names
*LMX2430EVAL
Reg
R0
2.0 Programming Description
2.4 R0 REGISTER
The R0 register contains the RF_R, RF_CPP, RF_CPG, RF_CPT, and RF_RST control words, in addition to two of the four bits
that compose the MUX control word. The detailed descriptions and programming information for each control word is discussed
in the following sections.
2.4.1 RF_R[14:0] - RF Synthesizer Programmable Reference Divider (R Counter) (R0[17:3])
The RF reference divider (RF_R) can be programmed to support divide ratios from 3 to 32767. Divide ratios less than 3 are
prohibited.
2.4.2 RF_CPP - RF Synthesizer Phase Detector Polarity (R0[18])
The RF_CPP bit is used to control the RF synthesizer’s phase/ frequency detector polarity based on the VCO tuning
characteristics.
MUX[3:2]
23
Divide Ratio
32767
22
3
4
•
Control Bit
RF_CPP
RST
RF_
21
CPT
RF_
20
CPG
RF_
19
14
0
0
1
•
CPP
RF_
18
Register Location
13
0
0
1
•
17
R0[18]
12
0
0
1
•
16
11
15
0
0
1
•
DATA[20:0] FIELD
RF VCO Characteristics
14
(Continued)
RF Phase/
Frequency Detector
Polarity
10
0
0
1
•
13
Description
9
0
0
1
•
12
39
8
0
0
1
11
•
RF_R[14:0]
RF_R[14:0]
10
7
0
0
1
•
RF VCO Negative
Tuning
Characteristics
9
20053567
6
0
0
1
•
8
0
5
0
0
1
•
7
Function
6
4
0
0
1
•
RF VCO Positive
Tuning
Characteristics
5
3
0
0
1
•
4
1
2
0
1
1
•
3
www.national.com
2
0
1
1
0
1
•
ADDRESS
FIELD
[2:0]
1
0
0
1
0
1
•
0
0