LMX2331UEVAL National Semiconductor, LMX2331UEVAL Datasheet - Page 46

• Manufacturer Part Number: LMX2331UEVAL
• Manufacturer: National Semiconductor

Specifications of LMX2331UEVAL

• Lead Free Status / Rohs Status: Not Compliant

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2.0 Programming Description
2.7.3 PRE RF
The RF synthesizer utilizes a selectable dual modulus prescaler.
2.7.4 PWDN RF
The PWDN RF bit is used to switch the RF PLL between a powered up and powered down mode.
Furthermore, the PWDN RF bit operates in conjuction with the TRI-STATE ID
powerdown mode.
Control Bit
Control Bit
Control Bit
PWDN RF
PRE RF
PRE RF
Register Location
Register Location
Register Location
RF Synthesizer Prescaler Select
RF SYNTHESIZER POWERDOWN
LMX2331U and LMX2332U RF Synthesizer Prescaler Select
RF N[20]
RF N[20]
RF N[21]
LMX2330U RF Synthesizer Prescaler Select
(Continued)
RF Prescaler Select
RF Prescaler Select
RF Powerdown
Description
Description
Description
46
o
RF bit to set a synchronous or an asynchronous
32/33 Prescaler
Selected
64/65 Prescaler
Selected
RF PLL Active
0
0
0
Function
Function
Function
64/65 Prescaler
Selected
128/129 Prescaler
Selected
RF PLL Powerdown
RF N[20]
RF N[21]
1
1
1