Hello, the hmc7044 clock chip I used configures a channel as a sysref channel. It does not use SPI to write the reseeding and pulse generator request commands, but this channel outputs 16 sysref pulses with a frequency of 1.92mhz. The PLL1 and pll2 of the clock have been locked. What's the matter?
Can you explain the issue in more details please?
When configuring hmc7044, I only enabled the sysref timer, set the value of 0x5C register, set the output channel to the pulse generator mode of dynamic startup, and set the mode selection of the pulse generator to 16 pulses, without issuing the pulse generator request command,
But this channel outputs 16 sysref pulses. What's the matter？
If you have sent Restart or Reseed request after above configurations, it is normal to get SYSREF pulses.