Hi, I have read the datahseet of the AD9361 and I see that we can communicate with the AD9361 by two sort of bus (LVDS or parallel MOS level data). I would like to know what kind of bus we use with the Ettus B210?! In the schematic online, we can understand that we are using the parallel MOS level?! If we use the LVDS we could be much faster isn it?! -- Edouard LECLERCQ Website : http://electronicsprojectsel.blogspot.fr/

Hello Edouard, Now, I'm no expert in the digital design motivations behind the B2x0 architecture, so if there's anything to add, others may chime in, but avoiding a longer wait: You're right; compare our b200.ucf [1] ## Catalina Data TX NET "tx_codec_d<0>" LOC = "T2" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<1>" LOC = "R1" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<2>" LOC = "V2" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<3>" LOC = "N1" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<4>" LOC = "V3" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<5>" LOC = "T1" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<6>" LOC = "W1" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<7>" LOC = "U1" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<8>" LOC = "W3" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<9>" LOC = "U3" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<10>" LOC = "P2" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d<11>" LOC = "R3" | IOSTANDARD = LVCMOS18 ; NET "tx_codec_d*" DRIVE = 2; However, considering the AD9361 is able to transport the maximum possible bandwidth over the LVCMOS interface, there's not much to win increasing the data rate of the data lines. Best regards, Marcus [1] https://github.com/EttusResearch/fpga/blob/master/usrp3/top/b200/b200.ucf#L60 On 29.12.2015 21:12, Edouard Leclercq via USRP-users wrote: > Hi, > > I have read the datahseet of the AD9361 and I see that we can > communicate with the AD9361 by two sort of bus (LVDS or parallel MOS > level data). > I would like to know what kind of bus we use with the Ettus B210?! In > the schematic online, we can understand that we are using the parallel > MOS level?! If we use the LVDS we could be much faster isn it?! > > > -- > Edouard LECLERCQ > Website : http://electronicsprojectsel.blogspot.fr/ > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com