LMK04000BEVAL/NOPB National Semiconductor, LMK04000BEVAL/NOPB Datasheet - Page 20

• Manufacturer Part Number: LMK04000BEVAL/NOPB
• Description: BOARD EVAL PRECISION CLOCK PLL
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LMK04000BEVAL/NOPB

• Main Purpose: Timing, Clock Conditioner
• Embedded: No
• Utilized Ic / Part: LMK04000
• Primary Attributes: 122.88 MHz VCXO
• Secondary Attributes: Integrated PLL & VCO
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMK04000BEVAL; LMK04000BEVAL

PLL1 Tab
The PLL1 tab allows the user to change:
Note that the value entered in the VCO frequency field on the PLL1 tab must match the
Reference Oscillator frequency entered on the PLL2 tab and the OSCin_FREQ on the Bits/Pins
tab. Updating the PLL2 tab Reference Oscillator frequency will automatically update the value
of OSCin_FREQ on the Bits/Pins tab. The only time that the Reference Oscillator frequency of
PLL2 tab will be different from the VCO frequency of PLL1 is when the EN_PLL2_REF2X
mode is enabled.
• External VCXO (or Crystal oscillator) frequency. Note: This value must be entered in
• PLL1 Phase detector frequency
• PLL1 R-counter value
• PLL1 N-counter value
• CLKin (Reference) oscillator frequency
• PLL1 Phase Detector polarity (for external VCXO tuning slope, click on the polarity
• PLL1 Charge pump gain (left click and right click on the charge pump current value)
• PLL1 Charge pump state (click on the charge pump state value)
both the PLL1 and PLL2 tabs.
value)
L M K 0 4 0 X X - R E V 3
E V A L U A T I O N
Figure 10 - PLL1 tab.
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O P E R A T I N G
I N S T R U C T I O N S