Appendix G
27
SNAU219 – June 2017
Copyright © 2017, Texas Instruments Incorporated
SYSREF Feature
Figure 25. Modifying SysRef Frequency
Table 8. SysRef Modes
MODE NAME
DESCRIPTION
TICS PRO - SYS REF SETTINGS
Master -
Continuos
LMX2595 generates SysRef pulses as long as SysRefReq pin is held
high.
Default mode. See quick start
instructions
Master - Pulse
LMX2595 generates a finite number of pulses as long as the
SysRefReq pin is held high.
Note: SysRefReq must be held high for
the duration of the pulses.
• Uncheck
SysRefReq
under
Pins
in
User Controls
tab
• Check
SYSREF_PULSE
• Set
SYSREF_PULSE_CNT
to
desired number of pulses
• Check
SysRefReq
under
Pins
in
User Controls
tab
Repeater
RFOUTB will repeat external input to SysRefReq pin. Output will be
reclocked to LMX2595 internal Frequency
• Uncheck
SysRefReq
• Check
SysRef_Repeat