ZHCSO17C November 2019 – March 2022 LMX2694-SEP
PRODUCTION DATA
The MUXOUT pin can be configured as either a lock detect indicator for the PLL or as a serial data output for the SPI interface to read back registers. Field MUXOUT_LD_SEL (register R0[2]) configures this output.
| MUXOUT_LD_SEL | FUNCTION |
|---|---|
| 0 | Serial data output for readback |
| 1 | Lock detect indicator |
When the lock detect indicator is selected, there are two types of indicators that can be selected with the field LD_TYPE (register R59[0]). The first indicator is called “VCOCal” (LD_TYPE = 0), and the second indicator is called “Vtune and VCOCal” (LD_TYPE = 1).