I am using LMX2582 to generate a single frequency. I have followed the schematic as given in the Page 36 (Sec. 8.2) of the datasheet and I am programming LMX2582 using microcontroller. But there is no RF output (even a default output ) is not coming (free running frequency) . Does LMX2582 need to be programmed even for a default output? I have programmed it using the configuration settings as given in the forum (Previously I used settings that I generated from TICS Pro):
1) Write R0 = 0x002216; (Soft reset the device, R0 [1] = 1, other bits set to default)
2) write other registers;
3) Write R0 = 0x00221C; (Frequency calibrate, R0 [1] = 0, R0 [3] = 1, other bits are set to default)
e2e.ti.com/.../588825
I am unable to know if my programming is wrong or is the LMX2582 not soldered properly. I want to know if LMX2582 without programming and after power reset, should generate a default frequency (VCO free running frequency) or not.
Thanks in Advance,
Regards
Alok