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