Hello,
I want to use the AD9364 in TDD Tx, activating the Tx Monitor path, and getting the resulting I/Q data on parallel port:
For that purpose I have configured the parallel port in CMOS-DDR-FullDuplex-Full Port : register@0x012 = 0x02
=> so on P1: I sent the Tx data to AD9364 with I/Q muxed => OK
=> and on P0: I should see the Rx data from AD9364 with I/Q muxed
My config:
when in TDD, I activate the Tx Monitoring path using ad9361_set_rx_rf_port_input with RFport=9 (TX_MON1 selected) and I have activated the Enable Rx Data Port bit (D7 of register@0x014)
=> I was expected to see some Rx I/Q data on P0 coming from the Tx Monitoring path but the port seems in High Z, no Rx Frame signal, no data toggling => KO
(please note that this is OK when the AD9364 is set in FDD, I receive the data correctly)
I did a check on various registers but did not see any issue, here are the values:
register[0x1]=0x0
register[0x12]=0x2 //CMOS-DDR-FullDuplex-Full Port
register[0x13]=0x0 // TDD mode
register[0x14]=0xA9 //Enable Rx Data Port
register[0x57]=0x38 // Tx Monitor Power Down = 0
register[0x6E]=0x29 // Tx Mon enable
Questions:
- why I can not see the I/Q data coming from the Tx Monitor path?
- is there a mistake in the parallel port config for such feature?
- is there other registers to be checked to confirm the correct settings?
- also I'm not confident into the Tx RSSI value reported so wondering if the Tx Monitoring path is really activated....
thanks in advance for your help,
Mikael
