Hi, all:
I tried to set the LM98620 to get a "more stable" & "low SNR" output. However, it's difficult to both achieve this goal ("more stable" & "low SNR") in my settings.
Maybe I put some wrong settings in LM98620 registers. But, where is the problem? I really have no ideas. Does anybody can help me analysis the output as shown below?
■OSX Inputs
OSR1(and other channels) and MCLK input
OSR1 According to light source(from weak to strong) react
So, I conjecture the OSX inputs are OK.
■Setting Imformations
OSX pixel rate: 20MHz(same as MCLK, SHP, SHD, TESTO1, TESTO0)
Input Mode: 6-channel(pixel rate MCLK)
Input Timing Mode: CDSb(CDS mode, sampled by SHP and SHD clocks)
Sample Timing Pulses routed to TESTO outputs(0x00[1]=1)
"SHP & AFEPHASE" routed to "TESTO1"
"SHD & !AFEPHASE" routed to "TESTO0"
LVDS ouput format: Mode 2a, 5 pair output(0x01[2:1]=01)
■LVDS Outputs Situation
Situation A: "more stable"(no sway), but "high SNR".
At AFEPHASE(0x02[3:2])=10, move SHP and SHD.
no light source
weak light source
strong light source
Situation B: "low SNR", but "less stable"(always sway).
At AFEPHASE(0x02[3:2])=10, move SHP and SHD.
no light source
weak light source
strong light source
If you want to know more information about settings, please tell me. Thank you :)