3 // USRP - Universal Software Radio Peripheral
5 // Copyright (C) 2006,2007 Matt Ettus
6 // Copyright (C) 2008 Corgan Enterprises LLC
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA
23 // ------------------------------------------------------------
24 // If TX_ON is not defined, there is *no* transmit circuitry built
27 // ------------------------------------------------------------
28 // Define 1 and only one of TX_SINGLE, TX_DUAL and TX_QUAD
29 // to respectively enable 1, 2 or 4 transmit channels.
30 // [Please note that only TX_SINGLE and TX_DUAL are currently valid]
35 // ------------------------------------------------------------
36 // If TX_DIG_ON is defined each transmit channel sends its I lsb and Q lsb to gpio pins
37 // The lsb bits of the analog output signal are truncated
39 // ------------------------------------------------------------
40 // Define TX_HB_ON to enable the transmit halfband filter
44 // ------------------------------------------------------------
45 // IF RX_ON is not defined, there is *no* receive circuitry built
48 // ------------------------------------------------------------
49 // Define 1 and only one of RX_SINGLE, RX_DUAL and RX_QUAD
50 // to respectively define 1, 2 or 4 receive channels.
56 // ------------------------------------------------------------
57 // Define RX_HB_ON to enable the receive halfband filter
60 // ------------------------------------------------------------
61 // Define RX_NCO_ON to enable the receive Numerical Controlled Osc
64 // ------------------------------------------------------------
65 // Define RX_CIC_ON to enable the receive Cascaded Integrator Comb filter
68 // ------------------------------------------------------------
69 // If RX_DIG_ON is defined each receive channel sends has its I lsb and Q lsb replaced by digital input from gpio pins
70 // So the analog signals are truncated to 15 bits