USRP N210 Main clock rate and The transmission signal Sampling Rate

I am testing the transmission and receiving signal using two USRP N210. The communication setting as follows:

fc = 2.43e9;        % Hz
bW = 5e6;
fs = 5e6;           % tx_Sampling Rate = rx_Sampling Rate


From Time and Frequency Windows in GNURadio, I think I've received the signal. For the signal I will be processing with, there are some confused questions for me. One is the N210's main clock rate is 100MHz, the setting Sampling rate is 5MHz. Did the USRP N210 "use" each transmission baseband samples 20 times when processing the baseband signal I emit?] The example like this.