Texas Instruments Three Input, Thirteen Output, Clock Jitter Cleaner with Dual Cascaded PLLs and Integrated 2.5 GHz VC L LMK04816BEVAL/NOPB Datenbogen
Produktcode
LMK04816BEVAL/NOPB
L M K 0 4 8 1 6 E V A L U A T I O N 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
SNLU107
29
PLL1 Tab
Figure 11: PLL1 tab
Table 8: Registers Controls and Descriptions in PLL1 tab
Control Name
Register Name
Description
Reference Oscillator
Frequency (MHz)
Frequency (MHz)
n/a
CLKin frequency of the selected reference
clock.
clock.
Phase Detector Frequency
(MHz)
(MHz)
n/a
PLL1 Phase Detector Frequency (PDF).
This value is calculated as:
PLL1 PDF = CLKin Frequency / (PLL1_R *
CLKinX_PreR_DIV), where
CLKinX_PreR_DIV is the predivider value
of the selected input clock.
This value is calculated as:
PLL1 PDF = CLKin Frequency / (PLL1_R *
CLKinX_PreR_DIV), where
CLKinX_PreR_DIV is the predivider value
of the selected input clock.
VCO Frequency (MHz)
n/a
The VCO Frequency should be the OSCin
frequency, except when operating in Dual
PLL with 0-delay feedback. This value is
calculated as:
VCO Freq (OSCin freq) = PLL1 PDF *
PLL1_N.
In Dual PLL mode with 0-delay feedback,
the VCO frequency should be set to the
feedback clock input frequency. See the
section Setting the PLL1 VCO Frequency
and PLL2 Reference Frequency for details.
frequency, except when operating in Dual
PLL with 0-delay feedback. This value is
calculated as:
VCO Freq (OSCin freq) = PLL1 PDF *
PLL1_N.
In Dual PLL mode with 0-delay feedback,
the VCO frequency should be set to the
feedback clock input frequency. See the
section Setting the PLL1 VCO Frequency
and PLL2 Reference Frequency for details.
R Counter
PLL1_R
PLL1 R Counter value (1 to 16383).