in the schematic of K2 ( control board ) there is the signal
"DAC2CS" ???
DAC2 chip select: this is the signal that lets the PIC processor on the
control board load values to U5 on the RF board, a digital-to-analog
converter (DAC) which is used to change the frequency of the PLL
reference oscillator.
" SDO " ???
Serial data out: this is used to send the actual data to the DAC, or to
other chips connected to the serial peripheral interface (SPI) bus.
" SCK " signal clock ?
Serial clock: part of the SPI bus, this tells the chip when to accept a
data bit on the SDO line.
73,
Lyle KK7P
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