Hi,
I have some questions about DS80PCI402 operation.
1. EQ :
On the table 2(Equalizer Setting), it doens't show the linearify by EQ-8bits setting at 2.5GHz/4.5Ghz.
How to know a EQ value which is not mention at this table? ex, 0x16 etc...
Can you provide the all combination setting from 0x00 ~ 0xFF for the EQ value at 2.5GHz/4.5Ghz condition ? It's not easy to tune a EQ value due to non-linearity characteristic between EQ[0:7] and actual EQ dB.
2. Loopback :
On the SMBUS mode (LPBK pin is floating), there seems to be showing something wrong the loopback path.
1) Under LPBK pin is floating with Reg0x02[5:4]=00b, it is normal operation like INA to OUTA, INB-> OUTB. Is it correct?
2) Under Reg0x02 = 10b, the loop path configuraiton is INBx -> OUTAx. Then, how about the INAx and OUTBx path ? HiZ?
3) Under Reg0x02 = 01b, the loop path configuraiton is INAx -> OUTBx. Then, how about the INBx and OUTAx path ? HiZ?
4) Is there any additional setting(Reg or H/W) needed except on Reg02[5:4] for loopback operation? Because the output
Thank you.
Tony