Dear All,
I've got a problem with CDCE913 output. The output frequency of CDCE913 doesn't equal the value I set and expect by setting EEPROM registers.
There is one 27Mhz Crystal(DSX530GA-27.000MHZ) in my design, and I select VCXO as clock input to use PWM signal to control CDCE913. I want to generate 49.152Mhz frequency . But in result I got 49.1578Mhz which can't be accepted.
I set up device by software TI Pro Clock and I checked them a couple of times and they seemed OK.
:01000000817E :0100010005F9 :0100020034C9 :0100030001FB :0100040002F9 :0100050050AA :0100060040B9 :0100070000F8 :0100080000F7 :0100090000F6 :01000A0000F5 :01000B0000F4 :01000C0000F3 :01000D0000F2 :01000E0000F1 :01000F0000F0 :0100100000EF :0100110000EE :0100120000ED :0100130000EC :010014004D9E :0100150002E8 :0100160004E5 :0100170000E8 :01001800D611 :01001900D115 :01001A00E302 :01001B00AB39 :01001C0000E3 :01001D0040A2 :01001E0002DF :01001F0008D8 :00000001FF
The input Crystal is 27.00003Mhz.
The temperature of the the whole board is normal.
So what can cause this wrong output frequency?
Thank you for the suggestion.