LMX2487E National Semiconductor Corporation, LMX2487E Datasheet - Page 25

• Manufacturer Part Number: LMX2487E
• Description: 7.5 Ghz High Performance Delta-sigma Low Power Dual Pllatinum? Frequency Synthesizers With 3.0 Ghz Integer Pll
• Manufacturer: National Semiconductor Corporation

Quick Start Register Map
Although it is highly recommended that the user eventually take advantage of all the modes of the LMX2487E, the quick start register
map is shown in order for the user to get the part up and running quickly using only those bits critical for basic functionality. The following
default conditions for this programming state are a third order delta-sigma modulator in 12-bit mode with no dithering and no Fastlock.
Complete Register Map
The complete register map shows all the functionality of all registers, including the last five.
RE
R0
R1
R2
R3
R4
RE
R0
R1
R2
R3
R4
R5
R6 CSR[1:0]
R7
G
G
23
0
IF_
PD
RF
_P
23
D
0
ACCESS[3:0]
22
0
RF
_P
22
0001
0
0
21
1
21
1
0
RF_CPF[3:0]
20
0
20
0
0
RF_R[5:0]
RF_FD[21:12]
19
DATA[19:0] ( Except for the RF_N Register, which is [22:0] )
RF_N[10:0]
0
RF_R[5:0]
19
RF_CPG[3:0]
DATA[19:0] ( Except for the RF_N Register, which is [22:0] )
0
0
RF_N[10:0]
RF_CPG[3:0]
18
0
18
0
0
17
0
17
0
DITH
[1:0]
16
0
16
0
15
1
15
0
[1:0]
FM
14
1
IF_N[18:0]
14
0
IF_N[18:0]
13
0
13
0
12
0
12
25
0
11
RF_TOC[13:0]
0
11
RF_FD[11:0]
1
10
IF_R[11:0]
1
RF_FD[11:0]
IF_R[11:0]
10
0
9
1
RF_FN[21:12]
9
0
8
1
RF_FN[11:0]
8
1
7
0
RF_FN[11:0]
7
6
0
6
5
0
MUX
[3:0]
5
4
0
4
C3
3
0
0
0
1
C3
3
0
0
0
1
1
1
1
C2
2
0
1
1
0
C2
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2
0
1
1
0
0
1
1
C1
1
1
0
1
0
C1
1
1
0
1
0
1
0
1
C0
C0
0
0
1
1
1
1
0
0
1
1
1
1
1
1
1