LMX25311778EVAL National Semiconductor, LMX25311778EVAL Datasheet - Page 29

• Manufacturer Part Number: LMX25311778EVAL
• Manufacturer: National Semiconductor

Specifications of LMX25311778EVAL

• Lead Free Status / Rohs Status: Not Compliant

2.7.7 VCO_ACI_SEL
This bit is used to optimize the VCO phase noise. The recommended values are what are used for all testing purposes, and this
bit should be set as the table below instructs.
2.7.8 XTLSEL[2:0] -- Crystal Select
The value of this word needs to be changed based on the frequency presented to the OSCin pin in accordance to the table above.
For the LMX2531LQ2080E/2570E options and when f
0 through 3 should be used in accordance with the table above.
LMX2531LQ2265E
LMX2531LQ2570E
All Other Options
XTLSEL
Part
0
1
2
3
4
5
6
7
OSCin
< 8 MHz, manual mode must always be used. In other cases, modes
29
(< 8 MHz or 2080E/2570E options)
OSCin Frequency
VCO_ACI_SEL
Manual Mode
25 - 50 MHz
50 - 70 MHz
8 - 25 MHz
Reserved
Reserved
Reserved
>70 MHz
8
6
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