diff options
Diffstat (limited to 'host/lib/usrp/dboard/neon/neon_bands.cpp')
| -rw-r--r-- | host/lib/usrp/dboard/neon/neon_bands.cpp | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/host/lib/usrp/dboard/neon/neon_bands.cpp b/host/lib/usrp/dboard/neon/neon_bands.cpp new file mode 100644 index 000000000..3b0ab2ca1 --- /dev/null +++ b/host/lib/usrp/dboard/neon/neon_bands.cpp @@ -0,0 +1,157 @@ +// +// Copyright 2018 Ettus Research, a National Instruments Company +// +// SPDX-License-Identifier: GPL-3.0-or-later +// + +#include "neon_radio_ctrl_impl.hpp" +#include "neon_constants.hpp" +#include <uhd/utils/math.hpp> + +/* + * Neon frequency bands: + * + * For RX: + * Band Freq BSEL-210 BSEL-543 TX/RX RX2 + * SEL_10 | FE_SEL_210 SEL_10 + * chan 1 | chan 2 + * ------------------------------------------------------------------------- + * LB_B2: < 450 RF5 100 RF6 101 01 RF3 100 RF1 001 10 + * LB_B3: 450-700 RF6 101 RF5 100 01 RF3 100 RF1 001 10 + * LB_B4: 700-1200 RF3 010 RF4 011 01 RF3 100 RF1 001 10 + * LB_B5: 1200-1800 RF4 011 RF3 010 01 RF3 100 RF1 001 10 + * LB_B6: 1800-2350 RF1 000 RF2 001 01 RF3 100 RF1 001 10 + * LB_B7: 2350-2600 RF2 001 RF1 000 01 RF3 100 RF1 001 10 + * HB: 2600+ --- 111 --- 111 10 RF3 100 RF1 001 01 + * + * SEL_1 SEL_0 + * 1 0 ANT1(RX_HB)--TX/RX, ANT2(RX_LB)--RX + * 0 1 ANT1(RX_HB)--RX, ANT2(RX_LB)--TX/RX + * + * For TX: + * Band-Freq BSEL-210 BSEL-543 TX/RX + * FE_SEL_210 + * chan 1 | chan 2 + * ------------------------------------------------------------ + * LB_80 < 117.7 RF7 011 RF8 111 RF1 001 RF3 100 + * LB_160 117.7-178.2 RF8 111 RF7 011 RF1 001 RF3 100 + * LB_225 178.2-284.3 RF5 001 RF6 101 RF1 001 RF3 100 + * LB_400 284.3-453.7 RF6 101 RF5 001 RF1 001 RF3 100 + * LB_575 453.7-723.8 RF3 010 RF4 110 RF1 001 RF3 100 + * LB_1000 723.8-1154.9 RF4 110 RF3 010 RF1 001 RF3 100 + * LB_1700 1154.9-1842.6 RF1 000 RF2 100 RF1 001 RF3 100 + * LB_2750 1842.6-2940.0 RF2 100 RF1 000 RF1 001 RF3 100 + * HB_5850 > 2490.0 --- --- --- --- RF2 010 RF2 010 + * + */ + +using namespace uhd; +using namespace uhd::usrp; +using namespace uhd::rfnoc; +using namespace uhd::math::fp_compare; + +namespace { + /* Note on the RX filter bank: + * + * The RX path has 7 bands, which we call LB_B2, B3, .. HB same as + * the schematic. + * + * The following constants define lower cutoff frequencies for each band. + * LB_B2 does not have a lower cutoff frequency, it is implied by + * AD9361_MIN_FREQ. NEON_RX_BAND1_MIN_FREQ is the cutover frequency + * for switching from LB_B2 to LB_B3, and so on. + * + * Bands 1-6 have both high- and low-pass filters (effectively band + * passes). Frequencies need to be chosen to allow as much of the full + * bandwidth through unattenuated. + */ + constexpr double NEON_RX_LB_BAND3_MIN_FREQ = 450e6; + constexpr double NEON_RX_LB_BAND4_MIN_FREQ = 700e6; + constexpr double NEON_RX_LB_BAND5_MIN_FREQ = 1200e6; + constexpr double NEON_RX_LB_BAND6_MIN_FREQ = 1800e6; + constexpr double NEON_RX_LB_BAND7_MIN_FREQ = 2350e6; + constexpr double NEON_RX_HB_MIN_FREQ = 2600e6; + + /* Note on the TX filter bank: + * + * The TX path has 9 bands, which we name according to the schematic. + * + * The following constants define lower cutoff frequencies for each band. + * LB_80 does not have a lower cutoff frequency, it is implied by + * AD9361_MIN_FREQ. NEON_TX_LB_160_MIN_FREQ is the cutover frequency + * for switching from LB_80 to LB_160, and so on. + * + * On current Neon revisions, all filters on the TX filter bank are + * low pass filters (no high pass filters). + * Frequencies need to be chosen to allow as much of the full bandwidth + * through unattenuated (so don't go all the way up to the cutoff frequency + * of that filter). + */ + constexpr double NEON_TX_LB_160_MIN_FREQ = 117.7e6; + constexpr double NEON_TX_LB_225_MIN_FREQ = 178.2e6; + constexpr double NEON_TX_LB_400_MIN_FREQ = 284.3e6; + constexpr double NEON_TX_LB_575_MIN_FREQ = 453.7e6; + constexpr double NEON_TX_LB_1000_MIN_FREQ = 723.8e6; + constexpr double NEON_TX_LB_1700_MIN_FREQ = 1154.9e6; + constexpr double NEON_TX_LB_2750_MIN_FREQ = 1842.6e6; + constexpr double NEON_TX_HB_MIN_FREQ = 2940.0e6; +} + +neon_radio_ctrl_impl::rx_band +neon_radio_ctrl_impl::_map_freq_to_rx_band(const double freq) { + neon_radio_ctrl_impl::rx_band band; + + if (fp_compare_epsilon<double>(freq) < AD9361_MIN_FREQ) { + band = rx_band::INVALID_BAND; + } else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND3_MIN_FREQ) { + band = rx_band::LB_B2; + } else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND4_MIN_FREQ) { + band = rx_band::LB_B3; + } else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND5_MIN_FREQ) { + band = rx_band::LB_B4; + } else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND6_MIN_FREQ) { + band = rx_band::LB_B5; + } else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND7_MIN_FREQ) { + band = rx_band::LB_B6; + } else if (fp_compare_epsilon<double>(freq) < NEON_RX_HB_MIN_FREQ) { + band = rx_band::LB_B7; + } else if (fp_compare_epsilon<double>(freq) <= AD9361_MAX_FREQ) { + band = rx_band::HB; + } else { + band = rx_band::INVALID_BAND; + } + + return band; +} + +neon_radio_ctrl_impl::tx_band +neon_radio_ctrl_impl::_map_freq_to_tx_band(const double freq) { + neon_radio_ctrl_impl::tx_band band; + + if (fp_compare_epsilon<double>(freq) < AD9361_MIN_FREQ) { + band = tx_band::INVALID_BAND; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_160_MIN_FREQ) { + band = tx_band::LB_80; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_225_MIN_FREQ) { + band = tx_band::LB_160; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_400_MIN_FREQ) { + band = tx_band::LB_225; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_575_MIN_FREQ) { + band = tx_band::LB_400; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_1000_MIN_FREQ) { + band = tx_band::LB_575; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_1700_MIN_FREQ) { + band = tx_band::LB_1000; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_2750_MIN_FREQ) { + band = tx_band::LB_1700; + } else if (fp_compare_epsilon<double>(freq) < NEON_TX_HB_MIN_FREQ) { + band = tx_band::LB_2750; + } else if (fp_compare_epsilon<double>(freq) <= AD9361_MAX_FREQ) { + band = tx_band::HB; + } else { + band = tx_band::INVALID_BAND; + } + + return band; +} + |