LMK04000BEVALXO National Semiconductor, LMK04000BEVALXO Datasheet - Page 22
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LMK04000BEVALXO
Manufacturer Part Number
LMK04000BEVALXO
Description
BOARD EVAL PREC CLOCK PLL XO
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheets
1.LMK04010BISQENOPB.pdf
(54 pages)
2.LMK04002BEVAL.pdf
(56 pages)
3.LMK04002BEVAL.pdf
(38 pages)
Specifications of LMK04000BEVALXO
Main Purpose
Timing, Clock Conditioner
Embedded
No
Utilized Ic / Part
LMK04000
Primary Attributes
122.88 MHz Crystal
Secondary Attributes
Integrated PLL & VCO
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Bits/Pins Tab
The Bits/Pins tab allows the user to program bits directly. Many of which are not available on
other tabs. Refer to the datasheet for more detailed information. The bits available are:
• Common Box
• PLL Box
o RESET - Set the reset bit. This will reset the device. In a normal application it is
o POWERDOWN - Place the device in powerdown mode.
o EN_Fout – Enable the Fout port.
o PLL_MUX – Set the function of the LD pin.
o RC_DLD1_Start – Prevent PLL2 from locking until digital lock detect from
o EN_PLL2_XTAL – Enables Crystal mode for PLL2. For use with Crystals as
o EN_PLL2_REF2X – Doubles the reference frequency of PLL2. Note with this is
not necessary to program this bit clear since it is auto-clearing. However in the
CodeLoader software, RESET must be clicked again (cleared) to not cause a reset
every time R7 is programmed.
PLL1 is achieved.
opposed to a VCXO.
enabled, the PLL_R value is invalid. Program the Reference Oscillator on PLL2
Tab to be twice the VCO frequency on PLL1 tab. This adjustment must be done
manually.
L M K 0 4 0 X X - R E V 3
E V A L U A T I O N
Figure 12 - Bits/Pins tab.
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B O A R D
O P E R A T I N G
I N S T R U C T I O N S