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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
15
The Bits/Pins tab shows some of the internal registers which are not accessible from any of the
other visual tabs like “PLL” and “Clock Outputs.”
Right click on any of the bits for description.
Program Bits
POWERDOWN
Powers the part down.
EN_Fout
Turns on the Fout pin for measuring the internal VCO.
OSCin_FREQ
Must be set to the OSCin frequency in MHz.
PLL_MUX
Programmable to many different values to support Lock Detect or aid
troubleshooting.
DIV4
Shall be checked for OSCin frequencies greater than 20 MHz.
RESET
The registers can be defaulted by checking and unchecking RESET.
Software bits will not reflect this.
VCO_R3_LF
VCO_R4_LF
VCO_C3_C4_LF
Internal loop filter values, also accessible from Clock Outputs tab.
EN_CLKout0..7
Enable CLKout bits from CLKout0 to CLKout7. Also accessible from Clock
Outputs tab.
EN_CLKout_Global
Enable all clock outs. If unselected then the EN_CLKouts are overridden
and the outputs are all disabled.
Program Pins
GOE
Set Global Output Enable to high or low logic level.
SYNC*
Set SYNC* pin to high or low logic level.
TRIGGER
Set auxiliary trigger pin to high or low logic level.
