Lime 6002 TX VGA1 Gain

Dear all,

we are a little bit confused about VGA1GAIN configuration. Which register (0x41 or 0x4B) shall we use. Is there a relation between those two registers?

Thank you in advance
Best regards

For normal use you would use Register 0x41 to adjust the gain of TXVGA1. Register 0x4B is used when you are in test mode. It is poorly documented of which registers are test mode and not but if you look at top of the sheet in brackets (test mode) on the page. Address 0x40 bit 0 decode can toggle between normal (decode control signals) and test mode control signals. Most of the time the test mode is only used for calibration of DC offsets.

Each section has (user mode) and test mode registers.